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s-1142 series www.sii-ic.com high-withstand voltage low current consumption low dropout cmos voltage regulato r ? seiko instruments inc., 2009-2010 rev.2.0 _00 seiko instruments inc. 1 the s-1142 series, developed based on high-withstand voltag e cmos process, is a positive voltage regulator with a high-withstand voltage, low current co nsumption, and high output voltage accuracy . the s-1142 series operates at a high maximum operating voltage of 50 v a nd a low current consumption of 4.0 a (typ.). in addition to a built-in low on-resistance transistor which provides a very small dropout voltage and a large output current, this voltage regulator also has a built-in power-off circuit. an overcurrent protector prevents the load current from exceeding the capacitanc e of the output transistor. a built-in thermal shutdown circuit prevents damage caused by heat. a high heat radiation hsop-6 package enables high-density mounting. ? features ? output voltage : 2.0 v to 12.0 v, selectable in 0.1 v step ? low equivalent series resistance capacitor : ceramic capacitor of 0.1 f or more can be used as the i/o capacitor. ? input voltage : 3.0 v to 50 v ? high-accuracy ou tput voltage : 1.0% (at tj = +25 c), 3.0% (tj = ? 40 c to +105 c) ? low current consumption : during operation: 4.0 a typ., 9.0 a max. (tj = ? 40 c to +105 c) during shutdown: 0.1 a typ., 1.0 a max. (tj = ? 40 c to +105 c) ? output current : 200 ma (at v in v out(s) + 2.0 v) *1 ? built-in overcurrent protector : lim its overcurrent of output transistor ? operation temperature range : ? 40c to +105c (s-1142xxxh only) ? built-in thermal shutdown circuit : prevents damage caused by heat ? built-in power on/off circui t : longer battery life ? lead-free, sn 100%, halogen-free *2 *1. attention should be paid to the power dissipation of the package when the output current is large. *2. refer to ? ? product name structure ? for details. ? applications ? constant-voltage power supply for electrical applications for vehicle interiors (s-1142xxxh only) ? constant-voltage power supplies for home electric appliances ? package ? hsop-6 caution before using this product in medical equipment or automobile equipment including car audio, keyless entry and engine control unit, c ontact to sii is indispensable.
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 2 ? block diagram reference voltage circuit on/off *1 on/off circuit + ? vin vss vout overcurrent protector thermal shutdown circuit *1. parasitic diode figure 1
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 3 ? product name structure users can select the product type, output voltage, and package type for the s-1142 series. for the contents of product name, refer to ? 1. product name ?, ? 2. package ? regarding the package drawings and ? 3. product name list ? for details of product names. 1. product name s-1142 x xx x - xxxx u package abbreviation and ic packing specifications *1 e6t1 : hsop-6, tape (s-1142xxxi only) e6t2 : hsop-6, tape (s-1142xxxh only) operating temperature i : ? 40 c to +85 c h : ? 40 c to +105 c value of output voltage 20 to c0 (e.g., when the output voltage is 2. 0 v, it is expressed as 20. when the output voltage is 10 v, it is expressed as a0. when the output voltage is 11 v, it is expressed as b0. when the output voltage is 12 v, it is expressed as c0.) product type *2 a : on/off pin negative logic b : on/off pin positive logic environmental code u : lead-free (sn 100%), halogen-free *1. refer to the tape specifications. *2. refer to ? 3. power-off pin (on/off pin) ? in ? ? operation?. 2. package drawing code package name package tape reel land hsop-6 fh006-a-p-sd fh006-a-c-sd fh006-a-r-sd fh006-a-l-sd
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 4 3. product name list table 1 output voltage hsop-6 (+85 c supported) hsop-6 (+105 c supported) 2.0 v 1.0% s-1142b20i-e6t1u s-1142b20h-e6t2u 2.5 v 1.0% s-1142b25i-e6t1u s-1142b25h-e6t2u 2.7 v 1.0% s-1142b27i-e6t1u s-1142b27h-e6t2u 2.8 v 1.0% s-1142b28i-e6t1u S-1142B28H-E6T2U 2.85 v 1.0% s-1142b2ji-e6t1u s-1142b2jh-e6t2u 3.0 v 1.0% s-1142b30i-e6t1u s-1142b30h-e6t2u 3.2 v 1.0% s-1142b32i-e6t1u s-1142b32h-e6t2u 3.3 v 1.0% s-1142b33i-e6t1u s-1142b33h-e6t2u 3.5 v 1.0% s-1142b35i-e6t1u s-1142b35h-e6t2u 3.7 v 1.0% s-1142b37i-e6t1u s-1142b37h-e6t2u 4.0 v 1.0% s-1142b40i-e6t1u s-1142b40h-e6t2u 5.0 v 1.0% s-1142b50i-e6t1u s-1142b50h-e6t2u 8.0 v 1.0% s-1142b80i-e6t1u s-1142b80h-e6t2u remark 1. please contact our sales office for products with an output voltage other than those listed above or type a products. 2. please select products of environmental code = u for sn 100%, halogen-free products.
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 5 ? pin configuration table 2 pin no. symbol description 1 vout output voltage pin 2 vss gnd pin 3 on/off power-off pin 4 nc *1 no connection 5 vss gnd pin 6 vin input voltage pin hsop-6 top view 4 5 6 3 2 1 *1. the nc pin is electrically open. the nc pin can be connected to vin or vss. figure 2
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 6 ? absolute maximum ratings caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions. table 3 (ta = 25 c unless otherwise specified ) parameter symbol absolu te maximum rating unit v in v ss ? 0.3 to v ss + 60 v input voltage v on/off v ss ? 0.3 to v in + 0.3 v output voltage v out v ss ? 0.3 to v in + 0.3 v power dissipation p d 1900 *1 mw junction temperature tj ? 40 to +125 c s-1142xxxi ? 40 to +85 c operating ambient temperature s-1142xxxh t opr ? 40 to +105 c storage temperature t stg ? 40 to +125 c *1. when mounted on board [mounted board] (1) board size : 50 mm 50 mm t1.6 mm (2) board material : glass epoxy resin (two layers) (3) wiring ratio : 50% (4) test conditions : when mounted on board (wind speed : 0 m/s) (5) land pattern : refer to the recommended land pattern (drawing code : fh006-a-l-sd) 0 50 100 150 2400 1600 0 power dissipation (p d ) [mw] ambient temperature (ta) [ c] 800 2000 1200 400 s-1142xxxi s-1142xxxh figure 3 power dissipation of package (when mounted on board) table 4 condition power dissipation thermal resistance value ( j ? a) hsop-6 (when mounted on board) 1900 mw 53c/w
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 7 power dissipation of hsop-6 (reference) package power dissipation differs depending on the mounting conditions. the power dissipation characteristics under the following te st conditions should be taken as reference values only. [mounted board] (1) board size : 50 mm 50 mm t1.6 mm (2) board material : glass epoxy resin (two layers) (3) wiring ratio : 90% (4) test conditions : when mounted on board (wind speed : 0 m/s) (5) land pattern : refer to the recommended land pattern (drawing code : fh006-a-l-sd) 0 50 100 150 2400 1600 0 power dissipation (p d ) [mw] ambient temperature (ta) [ c] 800 2000 1200 400 s-1142xxxi s-1142xxxh figure 4 power dissipation of package (when mounted on board) table 5 condition power dissipation (reference) thermal resistance value ( j ? a) hsop-6 (when mounted on board) 2000 mw 50c/w
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 8 ? electrical characteristics 1. s-1142xxxi (+85 c supported) table 6 (v in = v out(s) +1.0 v, tj = ? 40 c to +125 c, ta = ? 40 c to +85 c unless otherwise specified) parameter symbol conditions min. typ. max. unit test circuit output voltage *1 v out(e) i out = 30 ma, ? 40 c tj +105 c v out(s) 0.97 v out(s) v out(s) 1.03 v 1 output current *2 i out v in v out(s) + 2.0 v 200 *4 ? ? ma 3 2.0 v v out(s) < 2.2 v ? 1.0 ? v 1 2.2 v v out(s) < 2.4 v ? 0.8 ? v 1 2.4 v v out(s) < 2.6 v ? 0.6 ? v 1 2.6 v v out(s) < 3.0 v ? 0.45 ? v 1 3.0 v v out(s) < 3.5 v ? 0.35 ? v 1 3.5 v v out(s) < 4.0 v ? 0.3 ? v 1 4.0 v v out(s) < 5.0 v ? 0.27 ? v 1 5.0 v v out(s) < 7.0 v ? 0.23 ? v 1 7.0 v v out(s) < 9.0 v ? 0.2 ? v 1 i out = 100 ma ta = +25c 9.0 v v out(s) 12.0 v ? 0.18 ? v 1 2.0 v v out(s) < 2.2 v ? 1.12 ? v 1 2.2 v v out(s) < 2.4 v ? 1.02 ? v 1 2.4 v v out(s) < 2.6 v ? 0.92 ? v 1 2.6 v v out(s) < 3.0 v ? 0.82 ? v 1 3.0 v v out(s) < 3.5 v ? 0.72 ? v 1 3.5 v v out(s) < 4.0 v ? 0.62 ? v 1 4.0 v v out(s) < 5.0 v ? 0.55 ? v 1 5.0 v v out(s) < 7.0 v ? 0.5 ? v 1 7.0 v v out(s) < 9.0 v ? 0.45 ? v 1 dropout voltage* 3 v drop i out = 200 ma ta = +25c 9.0 v v out(s) 12.0 v ? 0.4 ? v 1 line regulation out in 1out vv v ? v out(s) + 1.0 v v in 30 v, i out = 30 ma ? 0.05 0.3 %/v 1 v in = v out(s) +1.0 v, 2.0 v v out(s) < 5.1 v 0.1 ma i out 40 ma ? 20 40 mv 1 load regulation v out2 v in = v out(s) +1.0 v, 5.1 v v out(s) 12.0 v 0.1 ma i out 40 ma ? 20 60 mv 1 current consumption during operation i ss1 on/off pin = on, no load ? 4.0 9.0 a 2 current consumption during shutdown i ss2 on/off pin = off, no load ? 0.1 1.0 a 2 input voltage v in ? 3.0 ? 50 v ? power-off pin input voltage ?h? v sh v in = v out(s) +1.0 v, r l = 1.0 k , determined by v out output level 1.5 ? ? v 4 power-off pin input voltage ?l? v sl v in = v out(s) +1.0 v, r l = 1.0 k , determined by v out output level ? ? 0.3 v 4 power-off pin input current ?h? i sh v in = v out(s) +1.0 v, v on/off = v out(s) +1.0 v ? 0.1 ? 0.1 a 4 power-off pin input current ?l? i sl v in = v out(s) +1.0 v, v on/off = 0 v ? 0.1 ? 0.1 a 4 2.0 v v out(s) < 2.3 v ? 50 ? db 5 2.3 v v out(s) < 3.6 v ? 45 ? db 5 3.6 v v out(s) < 6.1 v ? 40 ? db 5 6.1 v v out(s) < 10.1 v ? 35 ? db 5 ripple rejection rr v in = v out(s) +1.0 v, f = 100 hz, v rip = 0.5 vrms, i out = 30 ma, ta = +25c 10.1 v v out(s) 12.0 v ? 30 ? db 5 short-circuit current i short v in = v out(s) +1.0 v, on/off pin = on, v out = 0 v, ta = +25 c ? 80 ? ma 3 thermal shutdown detection temperature t sd junction temperature ? 150 ? c ? thermal shutdown release temperature t sr junction temperature ? 125 ? c ?
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 9 *1. v out(s) : specified output voltage v out(e) : actual output voltage the output voltage when fixing i out (= 30 ma) and inputting v out(s) + 1.0 v *2. the output current at which the output voltage becomes 95% of v out(e) after gradually increasing the output current. *3. v drop = v in1 ? (v out3 0.98) v out3 is the output voltage when v in = v out(s) + 2.0 v, and i out = 100 ma or 200 ma. v in1 is the input voltage at which t he output voltage becomes 98% of v out3 after gradually decreasing the input voltage. *4. the output current can be at least this value. due to limitation of the package power dissipation, this valu e may not be satisfied. attention should be paid to the power dissipation of the package when the output current is large. this specification is guaranteed by design.
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 10 2. s-1142xxxh (+105 c supported) table 7 (v in = 13.5 v, tj = ? 40 c to +125 c, ta = ? 40 c to +105 c unless otherwise specified) parameter symbol conditions min. typ. max. unit test circuit output voltage *1 v out(e) i out = 30 ma, ? 40 c tj +105 c v out(s) 0.97 v out(s) v out(s) 1.03 v 1 output current *2 i out v in v out(s) + 2.0 v 200 *4 ? ? ma 3 2.0 v v out(s) < 2.2 v ? 1.0 ? v 1 2.2 v v out(s) < 2.4 v ? 0.8 ? v 1 2.4 v v out(s) < 2.6 v ? 0.6 ? v 1 2.6 v v out(s) < 3.0 v ? 0.45 ? v 1 3.0 v v out(s) < 3.5 v ? 0.35 ? v 1 3.5 v v out(s) < 4.0 v ? 0.3 ? v 1 4.0 v v out(s) < 5.0 v ? 0.27 ? v 1 5.0 v v out(s) < 7.0 v ? 0.23 ? v 1 7.0 v v out(s) < 9.0 v ? 0.2 ? v 1 i out = 100 ma ta = +25c 9.0 v v out(s) 12.0 v ? 0.18 ? v 1 2.0 v v out(s) < 2.2 v ? 1.12 ? v 1 2.2 v v out(s) < 2.4 v ? 1.02 ? v 1 2.4 v v out(s) < 2.6 v ? 0.92 ? v 1 2.6 v v out(s) < 3.0 v ? 0.82 ? v 1 3.0 v v out(s) < 3.5 v ? 0.72 ? v 1 3.5 v v out(s) < 4.0 v ? 0.62 ? v 1 4.0 v v out(s) < 5.0 v ? 0.55 ? v 1 5.0 v v out(s) < 7.0 v ? 0.5 ? v 1 7.0 v v out(s) < 9.0 v ? 0.45 ? v 1 dropout voltage* 3 v drop i out = 200 ma ta = +25c 9.0 v v out(s) 12.0 v ? 0.4 ? v 1 line regulation out in 1out vv v ? v out(s) + 1.0 v v in 30 v, i out = 30 ma ? 0.05 0.3 %/v 1 v in = 13.5 v, 2.0 v v out(s) < 5.1 v 0.1 ma i out 40 ma ? 20 70 mv 1 load regulation v out2 v in = 13.5 v, 5.1 v v out(s) 12.0 v 0.1 ma i out 40 ma ? 20 150 mv 1 current consumption during operation i ss1 on/off pin = on, no load ? 4.0 9.0 a 2 current consumption during shutdown i ss2 on/off pin = off, no load ? 0.1 2.5 a 2 input voltage v in ? 3.0 ? 50 v ? shutdown pin input voltage ?h? v sh v in = 13.5 v, r l = 1.0 k , determined by v out output level 1.5 ? ? v 4 shutdown pin input voltage ?l? v sl v in = 13.5 v, r l = 1.0 k , determined by v out output level ? ? 0.3 v 4 shutdown pin input current ?h? i sh v in = 13.5 v, v on/off = 13.5 v ? 0.1 ? 0.1 a 4 shutdown pin input current ?l? i sl v in = 13.5 v, v on/off = 0 v ? 0.1 ? 0.1 a 4 2.0 v v out(s) < 2.3 v ? 50 ? db 5 2.3 v v out(s) < 3.6 v ? 45 ? db 5 3.6 v v out(s) < 6.1 v ? 40 ? db 5 6.1 v v out(s) < 10.1 v ? 35 ? db 5 ripple rejection rr v in = 13.5 v, f = 100 hz, v rip = 0.5 vrms, i out = 30 ma, ta = +25c 10.1 v v out(s) 12.0 v ? 30 ? db 5 short-circuit current i short v in = 13.5 v, on/off pin = on, v out = 0 v, ta = +25 c ? 80 ? ma 3 thermal shutdown detection temperature t sd junction temperature ? 150 ? c ? thermal shutdown release temperature t sr junction temperature ? 125 ? c ?
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 11 *1. v out(s) : specified output voltage v out(e) : actual output voltage the output voltage when fixing i out (= 30 ma) and inputting 13.5 v *2. the output current at which the output voltage becomes 95% of v out(e) after gradually increasing the output current. *3. v drop = v in1 ? (v out3 0.98) v out3 is the output voltage when v in = v out(s) + 2.0 v, and i out = 100 ma or 200 ma. v in1 is the input voltage at which t he output voltage becomes 98% of v out3 after gradually decreasing the input voltage. *4. the output current can be at least this value. due to limitation of the package power dissipation, this valu e may not be satisfied. attention should be paid to the power dissipation of the package when the output current is large. this specification is guaranteed by design.
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 12 ? test circuit 1. + vout vin vss + v a on/off set to power on figure 5 2. vout vin vss on/off set to v in or gnd + a figure 6 3. set to power on vout vin vss + v + a on/off figure 7 4. vout vin vss + v on/off + a r l figure 8 5. vout vin vss + v on/off r l set to power on figure 9
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 13 ? standard circuit c in *1 c l *2 input output gnd single gnd vout vin vss on/off *1. c in is a capacitor for stabilizing the input. *2. ceramic capacitor of 0.1 f or more can be used as c l . figure 10 caution the above connection diagram and constants will not guarantee successful operation. perform thorough evaluation using an actual application to set the constants. ? application conditions input capacitor (c in ) : 0.1 f or more output capacitor (c l ) : 0.1 f or more (ceramic capacitor) caution generally, series regulator may oscillate depending on the external components. confirm that no oscillation occur in the application fo r which the above capacitors are used. ? selection of input a nd output capacitors (c in , c l ) the s-1142 series requires an output capacitor between the vout and vss pins for phas e compensation. operation is stabilized by a ceramic capacitor with an output capacitance of 0.1 f or more over the entire temperature range. when using an os capacitor, a tantalum capacitor, or an al uminum electrolytic capacitor , the capacitance must be 0.1 f or more. the values of output overshoot and undershoot, which are tr ansient response characteristics, vary depending on the value of the output capacitor. the required value of capacitance for the input capacitor differs depending on the application. set the value for input capacitor (c in ) and output capacitor (c l ) as follows. c in 0.1 f c l 0.1 f caution define the capacity values of c in and c l by sufficient evaluation including the temperature characteristics under the actual usage conditions.
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 14 ? explanation of terms 1. low dropout voltage regulator a voltage regulator which has a low dropout voltage due to its built-in low on-resistance transistor. 2. output voltage (v out ) the accuracy of the outpu t voltage is ensured at 3.0% under specified conditio ns of fixed input voltage *1 , fixed output current, and fixed temperature. *1. differs depending on the product. caution if the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. refer to ? ? electrical characteristics? and ? ? characteristics (typical data)? for details. 3. line regulation ? ? ? ? v out1 v in ? v out indicates the dependency of the output voltage against the input voltage. that is, the value shows how much the output voltage changes due to a change in the inpu t voltage after fixing ou tput current constant. 4. load regulation ( v out2 ) indicates the dependency of the output voltage against the output current. that is, the value shows how much the output voltage changes due to a change in the ou tput current after fixing input voltage constant. 5. dropout voltage (v drop ) indicates the difference between the output voltage and the input voltage v in1 , which is the input voltage (v in ) when decreasing input voltage v in gradually until the output voltage has dropp ed to the value of 98% of output voltage v out3 , which is at v in = v out(s) + 2.0 v. v drop = v in1 ? (v out3 0.98)
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 15 ? operation 1. basic operation figure 11 shows a block diagram of the s-1142 series. the error amplifier compares the reference voltage (v ref ) with v fb , which is the output voltage resistance-divided by feedback resistors r s and r f . it supplies a gate voltage necessary to main tain a constant output voltage which is not influenced by the input voltage and te mperature change to t he output transistor. vout *1 vss vin r s r f error amplifier constant current supply v ref v fb ? + reference voltage circuit *1. parasitic diode figure 11 2. output transistor in the s-1142 series, a low on-resistance p-channe l mosfet is used as the output transistor. be sure that v out does not exceed v in + 0.3 v, to prevent the voltage regul ator from being damaged due to inverse current which flows, because of a parasitic diode bet ween the vin and vout pins, when the potential of v out becomes higher than v in .
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 16 3. shutdown pin (on/off pin) this pin starts and stops the regulator. when the on/off pin is set to the shutdown level, the entire internal circuit stops operating, and the built-in p-channel mos fet output transistor betw een the vin and vout pins is turned off, in order to reduce the current consumption significantly. the vout pin is set to the v ss level by the internal divi ding resistor of several m between the vout and vss pins. note that the current consumption incr eases when a voltage of 0.3 v to v in ? 0.3 v is applied to the on/off pin. the on/off pin is configured as shown in figure 12 . since the on/off pin is neither pulled down nor pulled up internally, do not use it in the floating state. when not using the on/off pin, connect it to the vss pin in the product a type, and connect it to the vin pin in the b type. table 8 logic type on/off pin internal circuits vout pin voltage current consumption a ?l?: power on operate set value i ss1 a ?h?: power off stop v ss level i ss2 b ?l?: power off stop v ss level i ss2 b ?h?: power on operate set value i ss1 vss on/off vin figure 12 4. overcurrent protector the s-1142 series has an overcurrent protection circuit having the characteristics shown in (1) output voltage vs. output current (when load cu rrent is increased) (ta = +25 c) in ? ? characteristics (typical data) ?, in order to protect the output transistor against an excessive output current and short circuiting between the vout and vss pin. the current (i short ) when the output pin is short-circuited is internally set at approx. 80 ma (typ.), and the initial value is restored for the output voltage, if releasing a short circuit once. caution using the overcurrent protection circuit is to protect the output tran sistor from accidental conditions such as short circuited load and the rapid and large current flow in the large capacitor. the overcurrent protection circuit is not suitable for use under the short circuit status or large current flowing (200 ma or more) that last long.
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 17 5. thermal shutdown circuit the s-1142 series has a thermal shutdown circuit to pr otect the device from damage due to overheat. when the junction temperature rises to 150 c (typ.), the thermal shutdown circuit operates to stop regulating. when the junction temperature drops to 125 c (typ.), the thermal shutdown circuit is released to re start regulating. due to self-heating of the s-1142 series , if the thermal shutdown circuit starts operating, it stops regulating so that the output voltage drops. when regulation stops, the s-114 2 series does not itself generate heat and the ic?s temperature drops. when the temperature drops, the thermal s hutdown circuit is released to restart regulating, thus this ic generates heat again. repeati ng this procedure makes the waveform of the output voltage into a pulse-like form. stop or restart of regulation continues unless decr easing either both of the in put voltage and the output voltage in order to reduce the internal current c onsumption, or decreasing the ambient temperature. table 9 thermal shutdown circuit vout pin voltage operate : 150 c (typ.) *1 v ss level release : 125 c (typ.) *1 set value *1. junction temperature
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 18 ? precautions ? wiring patterns for the vin, vout and gnd pins should be de signed so that the impedance is low. when mounting an output capacitor between the vout and vss pins (c l ) and a capacitor for stabilizing the input between the vin and vss pins (c in ), the distance from the capacitors to th ese pins should be as short as possible. ? note that the output voltage may generally increase when a series regulator is used at low load current (0.1 ma or less). ? note that the output voltage may genera lly increase due to the leakage current from a driver when a series regulator is used at a high temperature. ? note that the output voltage may incr ease due to the leakage current from a driv er even if the on/off pin is at the power-off level when a series regulator is used at a high temperature. ? generally series regulators may oscillate, depending on t he selection of external parts. the following conditions are recommended for this ic. however, be sure to perform sufficient evaluation un der the actual usage conditions for selection, including the temperature characteristi cs. regarding the equivalent series resistance (r esr ) for the output capacitor, refer to (6) example of equivalent series resistance vs. output current characteristics (ta = +25 c) in ? ? reference data ?. input capacitor (c in ) : 0.1 f or more output capacitor (c l ) : 0.1 f or more ? the voltage regulator may oscillate when the impedance of the power supply is high and the input capacitance of the ic is small, or an input ca pacitor is not connected. ? it is important to sufficiently evaluate in an actual device output voltage fluctuations ca used by power supply or load fluctuations. ? a momentary overshoot may be output when the power supply suddenly increases, and the output capacitance is small. it is therefore important to sufficiently evaluate t he output voltage at power application in actual device. ? the application conditions for the input voltage, output voltage, and load current should not exceed power dissipation of the package. ? do not apply an electrostatic discharge to this ic that exceeds the performance ratings of the built-in electrostatic protection circuit. ? in determining the output curren t, attention should be paid to the output current value specified in table 6 and table 7 in ? ? electrical characteristics ? and footnote *4 of the table. ? sii claims no responsibility for any disputes arising out of or in connection with any infringement by products including this ic of patents owned by a third party.
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 19 ? characteristics (typical data) 1. common to s-1142xxxi and s-1142xxxh (1) output voltage vs. output current (whe n load current is in creased) (ta = +25 c) s-1142b20 s-1142b50 100 200 300 400 500 600 700 800 0 2.5 1.0 0.5 1.5 2.0 0 13.5 v 4.0 v v out [v] i out [ma] v in = 3.0 v 100 200 300 400 500 600 700 800 0 6 3 2 1 4 5 0 v out [v] i out [ma] 13.5 v 6.0 v 7.0 v v in = 5.5 v s-1142bc0 100 200 300 400 500 600 700 800 0 14 12 10 8 6 4 2 0 v out [v] i out [ma] 13.5 v 13.0 v v in = 12.5 v remark in determining the output current, attention should be paid to the following. 1. the minimum value of output current value and footnote *4 in table 6 and 7 in the ? ? electrical characteristics? 2. power dissipation of the package (2) output voltage vs. input voltage (ta = +25 c) s-1142b20 s-1142b50 5 1015202530 0 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 v out [v] v in [v] 50 ma i out = 1 ma 30 ma 5 1015202530 0 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 v out [v] v in [v] 50 ma i out = 1 ma 30 ma s-1142bc0 15 20 25 30 10 12.4 12.2 12.0 11.8 11.6 11.4 11.2 11.0 v out [v] v in [v] 50 ma i out = 1 ma 30 ma
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 20 (3) dropout voltage vs. output current s-1142b20 s-1142b50 50 100 150 200 250 0 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 v drop [v] i out [ma] 25 c ? 40 c tj = 125 c 50 100 150 200 250 0 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 i out [ma] 25 c ? 40 c tj = 125 c v drop [v] s-1142bc0 50 100 150 200 250 0 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 i out [ma] 25 c ? 40 c tj = 125 c v drop [v] (4) dropout voltage vs. temperature s-1142b20 s-1142b50 0.9 0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 ? 40 ? 25 0 25 50 75 100 125 t j [ c] i out = 100 ma 10 ma v drop [v] 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 ? 40 ? 25 0 25 50 75 100 125 t j [ c] i out = 100 ma 10 ma v drop [v] s-1142bc0 ? 40 ? 25 0 25 50 75 100 125 0.30 0 t j [ c] 0.25 0.20 0.15 0.10 0.05 i out = 100 ma 10 ma v drop [v]
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 21 (5) dropout voltage vs. set output voltage (tj = +25 c) 2468101214 0 0.6 0.4 0.2 0.8 1.0 1.2 0 v drop [v] v out [v] 100 ma 30 ma 10 ma 1 ma i out = 200 ma (6) current consumption during operation vs. input voltage (when on/off pin is on, no load) s-1142b20 s-1142b50 5 1015202530 0 16 14 12 10 8 6 4 2 0 i ss1 [a] v in [v] 25 c ? 40 c tj = 125 c i ss1 [a] v in [v] 5 1015202530 0 16 14 12 10 8 6 4 2 0 i ss1 [a] v in [v] 25 c ? 40 c tj = 125 c s-1142bc0 5 1015202530 0 16 14 12 10 8 6 4 2 0 i ss1 [a] v in [v] 25 c ? 40 c tj = 125 c
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 22 (7) current consumption during operation vs. output current (ta = +25 c) s-1142b20 s-1142b50 25 50 75 100 125 150 0 160 140 120 100 80 60 40 20 0 i ss1 [a] i out [ma] 3.0 v v in = 13.5 v 25 50 75 100 125 150 0 160 140 120 100 80 60 40 20 0 i ss1 [a] i out [ma] 6.0 v v in = 13.5 v s-1142bc0 25 50 75 100 125 150 0 160 140 120 100 80 60 40 20 0 i ss1 [a] i out [ma] 13.0 v v in = 20.0 v (8) ripple rejection (ta = +25 c) s-1142b20 v in = 13.5 v, c l = 0.1 f s-1142b50 v in = 13.5 v, c l = 0.1 f 100 1k 10k ripple rejection [db] frequency [hz] 10 1m 0 80 100k 70 60 50 40 30 20 10 i out = 1 ma 30 ma 100 ma 100 1k 10k ripple rejection [db] frequency [hz] 10 1m 0 70 100k 60 50 40 30 20 10 i out = 1 ma 30 ma 100 ma s-1142bc0 v in = 13.5 v, c l = 0.1 f 100 1k 10k ripple rejection [db] frequency [hz] 10 1m 0 60 100k 50 40 30 20 10 i out = 1 ma 30 ma 100 ma
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 23 2. s-1142xxxi (1) output voltage vs. temperature s-1142b20 v in = 3.0 v s-1142b50 v in = 6.0 v ? 40 ? 25 0 25 50 75 100 125 2.04 2.02 2.00 1.98 1.96 t j [ c] v out [v] 5.2 5.1 5.0 4.9 4.8 ? 40 ? 25 0 25 50 75 100 125 t j [ c] v out [v] s-1142bc0 v in = 13.0 v 12.4 12.2 12.0 11.8 11.6 ? 40 ? 25 0 25 50 75 100 125 t j [ c] v out [v] (2) current consumption during operation vs. temperature s-1142b20 v in = 3.0 v s-1142b50 v in = 6.0 v 6.0 2.5 5.5 5.0 4.5 4.0 3.5 3.0 ? 40 ? 25 0 25 50 75 100 125 t j [ c] i ss1 [a] 6.0 2.5 5.5 5.0 4.5 4.0 3.5 3.0 ? 40 ? 25 0 25 50 75 100 125 t j [ c] i ss1 [a] s-1142bc0 v in = 13.0 v 6.0 2.5 5.5 5.0 4.5 4.0 3.5 3.0 ? 40 ? 25 0 25 50 75 100 125 t j [ c] i ss1 [a]
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 24 (3) output current vs. input voltage *1 s-1142b33 s-1142b50 10 20 30 40 50 0 250 0 i out [ma] v in [v] 200 150 100 50 25 c ta = 85 c 10 20 30 40 50 0 250 0 i out [ma] v in [v] 200 150 100 50 25 c ta = 85 c *1. when mounted on board [mounted board] (1) board size : 50 mm 50 mm t1.6 mm (2) board material : glass epoxy resin (two layers) (3) wiring ratio : surface approx. 75%, reverse side approx. 90% (4) hole : diameter 0.5 mm 24 pieces
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 25 3. s-1142xxxh (1) output voltage vs. temperature s-1142b20 v in = 13.5 v s-1142b50 v in = 13.5 v 2.04 2.02 2.00 1.98 1.96 v out [v] ? 40 ? 25 0 25 50 75 100 125 t j [ c] 5.2 5.1 5.0 4.9 4.8 v out [v] ? 40 ? 25 0 25 50 75 100 125 t j [ c] s-1142bc0 v in = 13.5 v 12.4 12.2 12.0 11.8 11.6 v out [v] ? 40 ? 25 0 25 50 75 100 125 t j [ c] (2) current consumption during operation vs. temperature s-1142b20 v in = 13.5 v s-1142b50 v in = 13.5 v 6.0 ?4 0 ? 25 0 25 50 75 100 125 t j [ c] 5.5 5.0 4.5 4.0 3.5 3.0 2.5 i ss1 [a] 6.0 ?4 0 ? 25 0 25 50 75 100 125 t j [ c] 5.5 5.0 4.5 4.0 3.5 3.0 2.5 i ss1 [a] s-1142bc0 v in = 13.5 v 6.0 ? 40 ? 25 0 25 50 75 100 125 t j [ c] 5.5 5.0 4.5 4.0 3.5 3.0 2.5 i ss1 [a]
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 26 (3) output current vs. input voltage *1 s-1142b33 s-1142b50 5 101520253035 0 250 0 i out [ma] v in [v] 200 150 100 50 25 c ta = 105 c 5 101520253035 0 250 0 i out [ma] v in [v] 200 150 100 50 25 c ta = 105 c *1. when mounted on board [mounted board] (1) board size : 50 mm 50 mm t1.6 mm (2) board material : glass epoxy resin (two layers) (3) wiring ratio : surface approx. 75%, reverse side approx. 90% (4) hole : diameter 0.5 mm 24 pieces
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 27 ? reference data (1) characteristics of input transient response (ta = +25 c) s-1142b20 i out = 30 ma, tr = tf = 5.0 s, c in = 0.1 f s-1142b50 i out = 30 ma, tr = tf = 5.0 s, c in =0.1 f 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 v in [v] 2.5 2.4 2.3 2.2 2.1 2.0 1.9 14 13 12 11 10 9 8 c l = 10 f 22 f v in v out 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 v in [v] 6.0 5.8 5.6 5.4 5.2 5.0 4.8 14 13 12 11 10 9 8 c l = 10 f 22 f v in v out s-1142bc0 i out = 30 ma, tr = tf = 5.0 s, c in = 0.1 f 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 v in [v] 13.2 11.8 16 9 15 14 13 12 11 10 13.0 12.8 12.6 12.4 12.2 12.0 c l = 10 f 22 f v in v out (2) characteristics of load transient response (ta = +25 c) s-1142b20 v in = 13.5 v, c in = 0.1 f, i out = 50 ma ? 100 ma s-1142b50 v in = 13.5 v, c in = 0.1 f, i out = 50 ma ? 100 ma 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 i out [ma] 2.4 150 100 50 0 50 100 150 2.3 2.2 2.1 2.0 1.9 1.8 c l = 10 f 22 f v out i out 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 i out [ma] 5.8 150 100 50 0 50 100 150 5.6 5.4 5.2 5.0 4.8 4.6 c l = 10 f 22 f v out i out s-1142bc0 v in = 13.5 v, c in = 0.1 f, i out = 50 ma ? 100 ma 0 200 v out [v] t [ s] 200 600 400 800 1000 1200 14.0 150 100 50 0 50 100 150 13.5 13.0 12.5 12.0 11.5 11.0 i out [ma] c l = 22 f 10 f v out i out
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 28 (3) transient response characteristics of on/off pin (ta = +25 c) s-1142b33 v in = 13.5 v, c l = 10 f, c in = 0.1 f, i out = 100 ma s-1142b50 v in = 13.5 v, c l = 10 f, c in = 0.1 f, i out = 100 ma v out [v] 6 0 9 3 12 15 ? 3 6 0 ? 6 ? 12 12 18 v on/off [v] ? 18 t [ s] 0 500 ? 500 1000 1500 2000 v out v on/off v out [v] v on/off [v] t [ s] 0 500 ? 500 1000 1500 2000 6 0 9 3 12 15 ? 3 6 0 ? 6 ? 12 12 18 ? 18 v out v on/off (4) load transient response characteristics dependent on capacitance (ta = +25 c) s-1142b50 v in = 13.5 v, c in = 0.1 f, i out = 50 ma 100 ma v in = 13.5 v, c in = 0.1 f, i out = 100 ma 50 ma 20 40 60 80 100 0 0.5 0 undershoot [v] c l [f] 0.4 0.3 0.2 0.1 20 40 60 80 100 0 0.5 0 overshoot [v] c l [f] 0.4 0.3 0.2 0.1 (5) input transient response characteristics dependent on capacitance (ta = +25 c) s-1142b50 v in = 7 v 12 v, t r = 5.0 s, c in = 0.1 f, i out = 30 ma v in = 12 v 7 v, t r = 5.0 s, c in = 0.1 f, i out = 30 ma 20 40 60 80 100 0 0.7 0 overshoot [v] c l [f] 0.6 0.5 0.4 0.3 0.2 0.1 20 40 60 80 100 0 0.7 0 undershoot [v] c l [f] 0.6 0.5 0.4 0.3 0.2 0.1
high-withstand voltage low current consumption low dropout cmos voltage regulator rev.2.0 _00 s-1142 series seiko instruments inc. 29 (6) example of equivalent series resistance vs. output current characteristics (ta = +25 c) c l : tdk corporation c3216x8r2a104k (0.1 f) 100 0.1 200 i out [ma] r esr [ ] c in = c l = 0.1 f 0 stable c in vin vss c l r esr s-1142 series vout on/off
high-withstand voltage low current consumption low dropout cmos voltage regulator s-1142 series rev.2.0 _00 seiko instruments inc. 30 ? marking specifications (1) to (5) : product name : s1142 (fixed) (6) : product type (7) and (8) : value of output voltage (9) : operating temperature (10) to (16) : lot number (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) hsop-6 top view 4 5 6 3 2 1

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www.sii-ic.com ? the information described herein is subject to change without notice. ? seiko instruments inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design. ? when the products described herein are regulated produ cts subject to the wassenaar arrangement or other agreements, they may not be exported without authoriz ation from the appropriate governmental authority. ? use of the information described he rein for other purposes and/or repr oduction or copying without the express permission of seiko instrum ents inc. is strictly prohibited. ? the products described herein cannot be used as par t of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. ? although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may oc cur. the user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

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