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austriamicrosystems ag is now ams ag the technical content of this austriamicrosystems datasheet is still valid. contact information: headquarters: ams ag tobelbaderstrasse 30 8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 e - mail: ams_sales @ams.com please visit our website at www.ams.com
as1375 1a quiescent current, 200ma ldo www.austriamicrosystems.com/ldos/as1375 revision 1.02 1 - 10 datasheet 1 general description the as1375 low-power, positive voltage regulator is designed to deliver up to 200ma, while consuming only 1a (typ.) of quiescent current. the device is available in fixed output voltages between 1.2v and 5.0v (programmable in 50mv steps). the input voltage ranges from 2v to 5.5v. operation with large input to output differential voltages is limited by the maximum power dissipation available from package and environment. the very-low dropout voltage prolongs battery life and all ows high current in small applications when operated with minimum input-to-output vo ltage differentials. the device features very stable output voltage, strict output voltage regulation tolerances (1%), and excellent line- and load-regulation. the device features integr ated short-circuit and over current protection. under- voltage lockout prevents erratic operation when the input voltage is slowly decaying. thermal protection shuts down the device when die temperature reaches 160c. this is a useful protection when the device is under sustained short circuit conditions. the as1375 is available in an 6-pin tdfn 2x2mm p ackage and is qualified for -40c to +85c operation. 2 key features input voltage: 2v to 5.5v low dropout voltage: 120mv @ 200ma load output voltage range: 1.2v to 5.0v (50mv steps) max. output current: 200ma very low quiescent current: 1a output voltage accuracy: 1% low shutdown current: 10na (typ.) integrated overtemperature/overcurrent protection under-voltage lockout feature enable input minimal external components required operating temperature range: -40c to +85c 6-pin tdfn 2x2mm package 3 applications the device is perfectly su ited for wireless handsets, smartphones, pdas, mp3 play ers, and other battery- operated handheld devices, where the regulators have to be always on. figure 1. as1375 - typical application diagram input 2v to 5.5v c in 1 f on / off c out 1f output 1.2v to 5v in en gnd out as1375 ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 2 - 10 as1375 datasheet - pin assignments 4 pin assignments figure 2. pin assignments (top view) pin descriptions table 1. pin descriptions pin name pin number description in 1 input supply en 3 enable input. a logic low disables the regulator. connect to pin in for normal operation. gnd 2, 4, 5 ground out 6 regulated output voltage . current flowing out of this pin is equivalent dc load current. exposed pad 7 ground. this pin also functions as a heat sink. solder to a large pad or the circuit-board ground plane to maximize power dissipation. 3 en 2 gnd 1 in 6out as1375 5gnd 4gnd 7 ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 3 - 10 as1375 datasheet - absolute maximum ratings 5 absolute maximum ratings stresses beyond those listed in table 2 may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in section 6 electrical characteristics on page 4 is not implied. exposure to absolute maximu m rating conditions for extended periods may affect device reliability. table 2. absolute maximum ratings parameter min max units notes input voltage +7 v output sh ort-circuit duration indefinite v electrostatic discharge 2 kv hbm mil-std. 883e 3015.7 methods latch-up 100 ma @85c, jedec 78 thermal resistance ja +140 oc/w junction temperature +150 oc internally limited operating temperature range -40 +85 oc storage temperature range -65 +150 oc package body temperature +260 oc the reflow peak soldering temperature (body temperature) specified is in accordance with ipc/jedec j-std- 020d ?moisture/reflow sensitivity classification for non-hermetic solid state surface mount devices?. the lead finish for pb-free leaded packages is matte tin (100% sn). ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 4 - 10 as1375 datasheet - electrical characteristics 6 electrical characteristics v in = v out + 500mv or v in = +2v (whichever is greater),c in = c out = 1f, en = in, t amb = -40c to +85 oc (unless otherwise specified). ty pical values are at t amb = +25 oc . table 3. electrical characteristics symbol parameter condition min typ max unit v in input voltage 2 5.5 v output voltage accuracy i out = 10ma -1 +1 % i out = 1 to 200ma, v out > 1.5v 1 1. guaranteed by production test of load regulation. -1.5 +1.5 % i out = 1 to 200ma, v out < 1.5v 1 -2 +2 % v out output voltage range 1.2 5.0 v i out guaranteed output current (rms) 200 ma ilimit short-circuit current limit v out = 0 250 330 450 ma in-regulation current limit v out > 96% of nominal value 330 ma i q ground-pin current i out = 0 1.2 2 a i out = 100a 1 i out = 200ma 1.7 v in - v out dropout voltage 2 2. dropout voltage is defined as v in - v out , when v out is 100mv below the value of v out measured for v in = (v out(nom) + 500mv). since the minimum input voltage is 2v, this specification is only valid when v out(nom) > 2v. i out = 200ma, v out 2.8v 120 200 mv i out = 200ma, 2v < v out < 2.8v 170 350 v lnr line regulation v in from (v out + 500mv) to 5.5v, i load = 10ma -0.125 +0.125 %/v v ldr load regulation i out = 1ma to 200ma 0.003 %/ma shutdown i off shutdown supply current en = gnd 10 100 na v ih en input threshold 2v < v in < 5.5v 1.2 v v il 2v < v in < 5.5v 0.4 v i en en input bias current en = in or gnd 1 40 3 3. guaranteed by design. note: all limits are guaranteed. the parameters with min and max values are guaranteed with production tests or sqc (statistical quality control) methods. na startup time from en to 90% of v out(nom) 750 s shutdown time from en to 10% of v out(nom) 500 thermal protection t shdnn thermal shutdown temperature 160 oc t shdnn thermal shutdown hysteresis 20 oc ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 5 - 10 as1375 datasheet - typical operating characteristics 7 typical operating characteristics v in = 3.5v, v out = 3.0v, t amb = +25c (unless otherwise specified). figure 3. line regulation figure 4. load regulation 2.95 2.975 3 3.025 3.05 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 input voltage (v) output voltage (v) iout = 0.1ma iout = 10 ma iout 0 100 ma iout = 200ma 2.95 2.975 3 3.025 3.05 0 25 50 75 100 125 150 175 200 output current (m a) output voltage (v) figure 5. ground pin current vs. output current figure 6. ground pin current vs. input voltage 1 1.25 1.5 1.75 2 2.25 2.5 0 25 50 75 100 125 150 175 200 output current (m a) ground pin current (a) 1 1.25 1.5 1.75 2 2.25 2.5 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 input voltage (v) ground pin current (a) iout = 0.1ma iout = 10 0ma iout = 200ma figure 7. output voltage vs. input voltage - dropout 2.9 2.92 2.94 2.96 2.98 3 3.02 3.04 3.06 2.9 3 3.1 3.2 3.3 3.4 3.5 input voltage (v) output voltage (v) iload = 100ma iload = 200ma ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 6 - 10 as1375 datasheet - detailed description 8 detailed description the as1375 is an low-power and low-quiescent current linea r-regulator specifically desi gned for space-limited applica - tions. these device can supply loads up to 200ma. as shown in figure 8 , the as1375 consist of an integrated voltage reference, error ampl ifier , p-channel mosfet pass transistor. additional blocks include a current limiter , thermal sensor, and enable logic. internal voltage reference the bandgap reference is connected to the error amplifier?s in verting input. the error amplif ier compares this reference with the feedback voltage and amplifies the difference. if the feedback voltage is lower than the reference voltage, the pass-transistor gate is pulled low. this allows more current to pass to the output and increases the output voltage. if the feedback voltage is too high, the pass transistor gate is pulled high, allowing less current to pass to the output. figure 8. as1375 - block diagram current limit the as1375 include a current limiting circuitry to monitor and control the p-channel mosfet pass transistor?s gate voltage, thus limiting the device output current to 300ma. note: see table 3 on page 4 for the min and max current limits. the out put can be sho rted to ground indefinitely without causing damage to the device. thermal protection integrated thermal protection circuitr y limits total power dissipation in the as1375. when the junction temperature (t j ) exceeds +160oc, the thermal sensor signals the shutdown l ogic, turning off the p-channel mosfet pass transistor and allowing the device to cool down. the thermal sensor turn s the pass transistor on again after the device?s junction temperature drops by 20oc, resulting in a pulsed out put during continuous thermal-overload conditions. note: t hermal protection is designed to protect the devices in the event of fault conditions . for continuous operation, do not exceed the absolute maximum junc tion temperature rating of +150oc. en gnd out as1375 - + overcurrent protection voltage and current reference enable con- trol logic thermal protection in ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 7 - 10 as1375 datasheet - application information 9 application information capacitor selection an d regulator stability for normal operation, use a 1f capacitor at pin in and a 1f capacitor at pin out. larger input capacitor values and lower esr provide better noise rejection and line-transient response. reduce output nois e and improve load-transient response, stability, and power-supply rejection by using large output capacitors. note: some ceramic die lectrics exhibit large capacitance and esr variation with temperature. with dielectrics such as z5u and y5v, it may be necessary to use a 2.2f or larger output capacitor to ensure stability at tempera - tures below -10c. with x7r or x5r dielectrics, 1f is sufficient at al l operating temperatures. noise, psrr, and transient response the as1375 is designed to de liver low dropout and low qui escent currents in battery- powered systems. the power- supply rejection is 85db at 1khz and 50db at 100khz. when operating from sources other than batteries, improv ed supp ly-noise rejection and transient response can be achieved by increasing the values of the input and output capacitors, and through passive filtering techniques. dropout voltage the as1375 minimum dropout voltage determ ines the lowest usable supply volt age. in battery-powered systems, this determines the useful end-of-life battery voltage. since the as1375 use a p-channel mosfet pass transistor, th e dropout voltage is a function of drain-to-source on- resistance (r ds(on) ) multiplied by i load . ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 8 - 10 as1375 datasheet - package drawings and markings 10 package drawings and markings the device is available in a 6-pin tdfn 2x2mm package. figure 9. 6-pin tdfn 2x2mm package diagram note: 1. all dimensions are in millimeters, angle is in degrees (). 2. n is the total number of terminals. 3. the location of the terminal #1 identifier and termi na l numbering convention conforms to jedec publication 95 spp-002. 4. nd and ne refer to the number of termin als on each d and e side respectively. 5. njr refer to non jedec registered. 6. dimension b applies to metallized terminal and is me asured between 0.15mm and 0.30mm from the terminal tip. if the terminal has the optional radius on the othe r end of the terminal, the dimension b should not be mea - sured in that radius area. 7. coplanarity applies to the terminals a nd all other bottom surface metallization. table 4. 4-bumps wl-csp package dimensions symbol min typ max symbol min typ max a 0.51 0.55 0.60 d bsc 1.95 2.00 2.05 a1 0.00 0.02 0.05 e bsc 1.95 2.00 2.05 a3 0.15 ref d2 1.30 1.45 1.55 b 0.20 0.25 0.32 e2 0.85 1.00 1.10 e 0.50 l 0.15 0.25 0.35 aaa 0.15 k 0.20 bbb 0.10 nd 3 ccc 0.10 n 6 d/2 d e e/2 b aaa c aaa c a index area d/2 x e/2 top view a3 seating plane a side view d2 l b bbb c a b index area (d/2 x e/2) bottom view e te rm in a l ti p exposed pad b a1 0.08 c ccc c pin#1 id ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 9 - 10 as1375 datasheet - ordering information 11 ordering information the devices are available as the standard products shown in table 5 . non-standard devices from 1.2v to 5.0v are avai lable in 50mv steps. for more information and inquiries contact http://www.austriamicrosystems.com/contact note: all prod ucts are rohs compliant. buy our products or get free samples online at icdirect: http://www.austriamicr osystems.com /icdirect technical support is found at http://www.austriamicrosyst ems.com/t echnical-support for further information and requests, please contact us mailto:sales@austriamicrosystems.com or find your local distributor at http://www.a ustriamicrosystem s.com/distributor table 5. ordering information ordering code marking output description delivery form package as1375-btdt-12 abd 1.2v 1a quiescent current, 2 00ma ldo tape and reel 6-pin tdfn 2x2mm as1375-btdt-18 abe 1.8v 1a quiescent current, 2 00ma ldo tape and reel 6-pin tdfn 2x2mm as1375-btdt-25 abf 2.5v 1a quiescent current, 2 00ma ldo tape and reel 6-pin tdfn 2x2mm as1375-btdt-30 abg 3.0v 1a quiescent current, 2 00ma ldo tape and reel 6-pin tdfn 2x2mm AS1375-BTDT-33 abh 3.3v 1a quiescent current, 2 00ma ldo tape and reel 6-pin tdfn 2x2mm ams ag technical content still valid
www.austriamicrosystems.com/ldos/as1375 revision 1.02 10 - 10 as1375 datasheet copyrights copyright ? 1997-201 0, austriamicrosystems ag, tobelbaderstrasse 30, 8141 unterpremstaet ten, austria-europe. trademarks registered ?. all rights reserved. the mate rial herein may not be reproduced, adapted, merged, translated, stored, or used wit hout the prior written consent of the copyright owner. all products and companies mentioned are trademarks or reg istered trademarks of their respective companies. disclaimer devices sold by austriamicrosystems ag are covered by t he warranty and patent indemni fication provisions appearing in its term of sale. austriamicrosystems ag makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freed om of the described devices from patent infringement. austriamicrosystems ag reserves the right to change spec ifications and prices at an y time and without notice. therefore, prior to designing this pro duct into a system, it is necessary to check with austriam icrosystems ag for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems ag for each application. for shipments of less than 100 parts the m anufacturing flow might show deviations from the standard production flow, such as test flow or test location. the information furnished here by austriamicrosystems ag is bel ieved to be correct and accurate. however, austriamicrosystems ag shall not be liable to recipient or any third party for any damages, including but not limited to pe rsonal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. no obligation or liability to reci pient or any third party shall arise or flow out of austriamicrosystems ag rendering of technical or other services. contact information headquarters austriamicrosystems ag tobelbaderstrasse 30 a-8141 unterpremstaetten, austria tel: +43 (0) 3136 500 0 fax: +43 (0) 3136 525 01 for sales offices, distributors a nd representatives, please visit: http://www.austriamicrosystems.com/contact ams ag technical content still valid

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