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sgm660 3 90% efficient synchronous step- up converter with 1.1 a switch sg micro corp www.sg- micro.com february 201 8 C r e v. a. 3 general description the SGM6603 is a constant frequency, current mode, synchronous step - up switching regulator. its o utput currents can go as high as 75ma while using a single - cell alkaline, and discharge it down to 0.9v. it can also be used for generating 5v at 400 ma from a 3.3v rail or a li -i on battery. high switching frequency minimizes the sizes of inductor and capacitor. integrated power mosfets and internal compensation make the SGM6603 simple to use and fit the total solution in to a compact space. for light load current, the SGM6603 enters into the power - sav e mode to maintain high efficiency. anti - ringing control circuitry reduces emi concerns by damping the inductor in discontinuous mode. the SGM6603 provides true output disconnect and this allows v out to go to zero volt during shutdown without drawing any current from the input source. the output voltage of sgm660 3- adj can be programmed by an external resistor divider, and th ose of SGM6603 - 3.3/SGM6603 - 5.0 are fixed internally on the chip. the device is available in sot - 23- 6 package. it operates over an ambient temperature range of - 40 to +85 . features 90% efficient synchronous boost converter device quiescent current: 30 a (typ) less than 1a shutdown current input voltage range: 0.9v to 5.5v 3.3v and 5.0v fixed output voltage s adjustable output voltage up to 5.5v output v oltage c lamping: 6v power - save mode for improved efficiency at low output power load disconnect during shutdown over - temperature protection available in green sot - 23- 6 package - 40 to +85 operating temperature range applications single - cell li battery powered pr oducts portable audio players cellular phones personal medical products typical application sw vcc en vout fb c1 10f r1 r2 SGM6603 1 6 3 4 5 l1 4.7h gnd 2 c2 10f output voltage can be adjusted power supply figure 1. typical application circuit a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 2 february 201 8 sg micro corp www.sg- micro.com package/ordering information model v out (v) package description specified temperature range ordering number package marking packing option SGM6603 adjustable sot -23 -6 -40 to +85 SGM6603 - adjyn6g/tr sc8xx tape and reel, 3000 3.3 sot -23-6 -40 to +85 SGM6603 - 3.3yn6g/tr sc9xx tape and reel, 3000 5.0 sot -23 -6 -40 to +85 SGM6603 - 5.0yn6g/tr scaxx tape and reel, 3000 note: x x = date code. green (rohs & hsf): sg micro corp defines "green" to mean pb - free (rohs compatible) and free of halogen substances. if you have additional comments or questions, please contact your sgmicro representative directly. marking information for example: sc8ca (2012, january) syy x x date code - year ("a" = 2010, "b" = 2011 ) date code - month ("a" = jan. "b" = feb. "l" = dec.) chip i.d. absolute maximum ratings input voltage range on sw, vout, vcc, fb, en ............................................................................. - 0.3v to 6v package thermal resistance sot -23- 6, ja .......................................................... 150 /w junction temperature ................................................. + 150 storage temperature range ........................ -65 to +150 lead temperature (soldering, 10s) ............................ + 260 esd susceptibility hbm ............................................................................. 4000v mm ................................................................................. 250v recommended operating conditions operating temperature range ....................... -40 to +85 overstress caution stresses beyond those listed may cause permanent damage to the device. functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. esd sensitivity caution this integrated circuit can be damaged by esd if you dont pay attention to esd protection. sgmicro recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. disclaimer sg micro corp reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 3 february 201 8 sg micro corp www.sg- micro.com pin configuration (top view) sw 4 5 6 3 2 1 gnd en vcc vout nc/fb sot - 23 - 6 pin description pin name function 1 sw boost and r ectifying s witch i nput. 2 gnd ground . 3 en enable input. (1/vcc enabled, 0/gnd disabled) 4 nc no connect. it should be left floating. (SGM6603 - 3.3/SGM6603- 5.0) fb output voltage feedback pin . voltage feedback for programming the output voltage. (SGM6603 - adj) 5 vout boost converter output. 6 vcc boost converter supply voltage. a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 4 february 201 8 sg micro corp www.sg- micro.com electrical characteristics ( full = -40 to +85 , typical values are at t a = +25 , unless otherwise noted.) parameter symbol conditions temp min typ max units dc/dc stage output voltage range v out full 2.5 5.5 v minimum input voltage range for start - up v in r l = 3.3k full 0.9 1. 3 v r l = 270 full 1.1 1. 4 input voltage range after start - up v in +25 0.9 5.5 feedback voltage v fb full 48 5 500 51 9 mv oscillator frequency f full 870 1200 14 70 khz switch current limit i sw full 0.75 1 .1 1.45 a start -u p current limit +25 300 ma boost switch - on resistance v out = 3.3v +25 480 m rectifying switch - on resistance v out = 3.3v +25 600 m output voltage accuracy v cc = 1.2v, i o = 10ma full 3 .8 % line regulation v cc = 0.9v to v out - 0.5v , i o = 10ma full 0. 1 1 % load regulation +25 0.5 % quiescent current v cc v en = v cc = 1.2v, i o = 0ma full 0.1 1 a v out v out = 3.3v +25 30 45 a v out = 5v +25 33 55 shutdown current v en = 0v, v cc = 1.2v +25 1 a control stage en input low voltage v il 0.9v v cc 1.8v full 0.12 v cc v 1.8v < v cc 3 .3v full 0. 5 3.3v < v cc 4.2v full 0.6 4.2v < v cc 5.0v full 0.6 en input high voltage v ih 0.9v v cc 1.8v full 0.8 v cc v 1.8v < v cc 3 .3v full 2 3.3v < v cc 4.2v full 2.4 4.2v < v cc 5.0v full 2.6 en input current clamped on gnd or vcc full 1 a over -t emperature protection 150 over -t emperature hysteresis 20 a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 5 february 201 8 sg micro corp www.sg- micro.com typical performance characteristics 50 60 70 80 90 100 0.9 1.3 1.7 2.1 2.5 2.9 3.3 efficiency (%) input voltage (v) efficiency vs. input voltage v out = 3.3v i o = 5ma i o = 100ma i o = 50ma 50 60 70 80 90 100 0.9 1.5 2.1 2.7 3.3 3.9 4.5 efficiency (%) input voltage (v) efficiency vs. input voltage v out = 5.0v 5.0 i o = 60ma i o = 5ma i o = 10ma 3.20 3.24 3.28 3.32 3.36 3.40 3.44 1 10 100 1000 output voltage (v) output current (ma) output voltage vs. output current v cc = 2.4v v out = 3.3v 4.90 4.95 5.00 5.05 5.10 5.15 5.20 1 10 100 1000 output voltage (v) output current (ma) output voltage vs. output current v cc = 3.6v v out = 5.0v 1 10 100 1000 0.9 1.7 2.5 3.3 4.1 4.9 quiescent current ( a) input voltage (v) quiescent current vs. input voltage v out = 5v v out = 3.3v 5.5 0 100 200 300 400 500 600 700 800 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 maximum output current (ma) input voltage (v) maximum output current vs. input voltage v out = 2.5v v out = 3.3v v out = 5.5v v out = 5.0v a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 6 february 201 8 sg micro corp www.sg- micro.com typical performance characteristics (continued) line transient response 500mv/div 100mv/div time (2ms/div) load transient response 50ma/div 50mv/div time (2ms/div) load transient response 50ma/div 50mv /div time (2ms/div) output voltage in continuous mode 20mv/div 100ma/div time (1s/div) output voltage in continuous mode 20mv/div 200ma/div time (1s/div) line transient response 500mv/div 100mv/div time (2ms/div) v in = 1.8v to 2.4v, r l = 33 , v out = 3.3v v in v out ac coupled ac coupled v in v out v in = 3 v to 3.6 v, r l = 25 , v out = 5 v ac coupled ac coupled v in = 1.2 v, i l = 20ma to 80ma , v out = 3.3 v ac coupled i out v out v in = 3.6 v, i l = 20ma to 80ma , v out = 5 v ac coupled i out v out v in = 1.2 v, r l = 33 , v out = 3.3 v v out i l ac coupled v in = 3.6 v, r l = 25 , v out = 5 v v out i l ac coupled a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 7 february 201 8 sg micro corp www.sg- micro.com typical performance characteristics (continued) 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 efficiency (%) output current (ma) efficiency vs. output current v out = 2.5v v cc =1.8 v v cc = 1.2v v cc = 0.9v 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 efficiency (%) output current (ma) efficiency vs. output current v out = 3.3v v cc = 2.4v v cc = 0.9v v cc = 1.8v output voltage in discontinuous mode 10mv/div 20ma/div time (400ns/div) v out i l v in = 1.2 v, r l = 3.3k , v out = 3.3 v ac coupled start - up after enable 2v/div 2v/div 5v/div 200ma/div time (200 s/div) start - up after enable 5v/div 2v/div 5v/div 200ma/div time (200 s/div) en v out sw i l v in = 2.4 v, r l = 33 , v out = 3.3 v en v out sw i l v in = 3.6 v, r l = 50 , v out = 5 v output voltage in power - save mode 50mv/div 50ma/div time (40 s/div) v out i l v in = 3.6 v, r l = 2.5k , v out = 5.0 v ac coupled a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 8 february 201 8 sg micro corp www.sg- micro.com typical performance characteristics (continued) 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 efficiency (%) output current (ma) efficiency vs. output current v cc = 2.4v v out = 5v v cc = 1.8v v cc = 3.6v a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 9 february 201 8 sg micro corp www.sg- micro.com typical application circuit s sw vcc en vout fb c1 24.7f r1 r2 v cc boost output SGM6603 power supply 1 6 3 4 5 l1 4.7h gnd 2 c2 10f figure 2. power supply solution for maximum output pow er operating from a single or dual alkaline cell sw vcc en vout fb c1 4.7f r1 r2 v cc boost output SGM6603 power supply 1 6 3 4 5 l1 4.7h gnd 2 c2 10f figure 3. power supply solution having small total solution size sw vcc en vout fb c1 4.7f SGM6603 power supply 1 6 3 l1 4.7h gnd 2 c2 10f r1 led current up to 30ma d1 4 5 figure 4. power supply solution for powering white leds in lighting applications a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 10 february 201 8 sg micro corp www.sg- micro.com typical application circuits (continued) sw vcc en vout fb c1 24.7f r1 r2 v cc boost output SGM6603 power supply 1 6 3 4 5 l1 4.7h gnd 2 c2 10f c3 0.1f c4 1f ds1 v cc2 ~ 2v cc unregulated auxiliary output figure 5 . power supply solution with auxiliary positive output voltage sw vcc en vout fb c1 24.7f r1 r2 v cc boost output SGM6603 power supply 1 6 3 4 5 l1 4.7h gnd 2 c2 10f c3 0.1f c4 1f ds1 v cc2 ~ -v cc unregulated auxiliary output figure 6 . power supply solution with auxiliary negative output voltage a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 11 february 201 8 sg micro corp www.sg- micro.com typical application circuits (continued) v out 3.3v sw vcc en vout nc c1 10 f SGM6603-3.3 power supply 1 6 3 4 5 l1 4 .7h gnd 2 c2 10 f figure 7a . basic application circuit for the fixed output versions sw vcc en vout nc c1 10f v out 5.0v SGM6603-5.0 power supply 1 6 3 4 5 l1 4.7h gnd 2 c2 10f figure 7b . basic application circuit for the fixed output versions a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 12 february 201 8 sg micro corp www.sg- micro.com application information design procedure the SGM6603 dc/dc converter is intended for systems powered by a single - cell, up to triple - cell alkaline, nicd, and nimh battery with a typical terminal voltage between 0.9v and 5.5v. it can also be used in systems powered by one - cell li -i on or li -p olymer with a typical vo ltage between 2.5v and 4.2v. programming output voltage in figure 1, the output voltage of the SGM6603 dc/dc converter can be adjusted with an external resistor divider. the typical value of the voltage at the fb pin is 500mv. the maximum recommended value for the output voltage is 5.5v. r1 and r2 are calculated using equation 1: r1 = r2 1 v v fb out ? = r2 ( 1 vm500 v out ? ) (1) r2 is recommended to be 100k. for example, if an output voltage of 3.3v is needed, a 560k resistor should be chosen for r1. inductor selection a boost converter normally requires two main passive components for storing energy during the conversion. a boost inductor and a storage capacitor at the output are required. to select the boost inductor, it is recomm ended to keep the possible peak inductor current below the current limit threshold of the power switch in the chosen configuration. the highest peak current through the inductor and the switch depends on the output load, the input (v cc ), and the output vol tage (v out ). estimation of the maximum average inductor current is done using equation 2: i l = i o 8.0v v cc out (2) f or example, for an output current of 75ma at 3.3v, at least an average current of 340ma flows through the inductor at a minimum input voltage of 0.9v. the second parameter for choosing the inductor is the desired current ripple in the inductor. normally, it is advisable to work with a ripple of less than 20% of the average inductor current. a smaller ripple reduces the magnetic hysteresis losses in the inductor, as well as output voltage ripple and emi. but in the same way, regulation time rises at load changes. in addition, a larger inductor increases the total system costs. with these para meters, it is possible to calculate the value for the inductor by using equation 3: l = out l cc out cc vfi )vv(v ? (3) parameter f is the switching frequency and i l is the ripple current in the inductor . in typical applications, a 4.7h inductance is recommended. the device has been optimized to operate with inductance values between 2.2h and 10h. nevertheless, operation with higher inductance values may be possible in some applications. detailed stabil ity analysis is then recommended. care must be taken because load transients and losses in the circuit can lead to higher currents as estimated in equation 3. also, the losses in the inductor which include magnetic hysteresis losses and copper losses are a major parameter for total circuit efficiency. input capacitor at least a 10f input capacitor is recommended to improve transient behavior of the regulator and emi behavior of the total power supply circuit. a ceramic capacitor or a tantalum capacitor with a 100nf ceramic capacitor in parallel, placed close to the ic, is recommended. a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 13 february 201 8 sg micro corp www.sg- micro.com application information (continued) output capacitor the major parameter necessary to define the output capacitor is the maximum allowed output voltage ripple of the converter. this ripple is determined by two parameters of the capacitor, the capacitance and the esr. it is possible to calculate the minimum capacitance needed for the defined ripple, supposing that the esr is zero, by using equation 4: c min = out cc out o vv f )vv(i ? (4) parameter f is the switching frequency and v is the maximum allowed ripple. with a chosen ripple voltage of 10mv, a minimum capacitance of 4.5f is needed. in this value range, ceramic capacitors are a good choice. the esr and the additional ripple created are negligible. it is calculated using equation 5: v esr = i o r esr (5) the total ripple is the sum of the ripple caused by the capacitance and the ripple caused by the esr of the capacitor. additional ripple is caused by load transients. this means that the output capacitor has to completely supply the load during the charging phase of the inductor. the value of the output capacitance depends on the speed of the load transients and the load current during the load change. with the calculated minimum value of 4.5f and load transient considerations, the recommended output capacitance value is in the range of 4.7 f to 22 f. care must be taken on capacitance loss caused by derating due to the applied dc voltage and the frequency characteristic of the capacitor. for example, larger form factor capacitors (in 1206 size) have their self resonant frequencies in the same frequency range as the SGM6603 operating frequency. so the effective capacitance of the capacitors used may be significantly lower. therefore, the recommendation is to use smaller capacitors in parallel instead of one larger capacitor. layout considerations as for all switching power supplies, the layout is an important step in the design, especially at high - peak currents and high switching frequencies. if the layout is not carefully done, the regulator could show stability problems as well as emi problems. therefore, use wide and short traces for the main current path and for the power ground tracks. the input capacitor, output capacitor, and the inductor should be placed as close as possible to the ic. use a common ground node for power ground and a different one for control ground to minimize the effects of ground noise. connect these ground nodes at any place close to the ground pin of the ic. the feedback divider should be placed as close as possible to the ground pin of the ic. to lay out the control ground, it is recommended to use short traces as well, separated from the power ground traces. this avoids ground shift problems, which can occur due to superimposition of power ground current and control ground current. thermal information implementation of integrated circuits in low - profile and fine - pitch surface - mount packages typically requires special attention to power dissipation. many system - dependent issues such as thermal coupling, airflow, added heat sinks and convection surfaces, and the presence of othe r heat - generating components affect the power - dissipation limits of a given component. three basic approaches for enhancing thermal performance follow. 1. improving the power dissipation capability of the pcb design. 2. improving the thermal coupling of the component to the pcb. 3. introducing airflow in the system . a ll data sheet.com
90% efficient synchronou s sgm 6603 step - up converter with 1.1 a switch 14 february 201 8 sg micro corp www.sg- micro.com revision history note: page numbers for previous revisions may differ from page numbers in the current version. february 201 8 ? rev.a. 2 to rev.a. 3 update the typical performance characteristics efficiency vs. in put voltage (v out = 3.3v , v out = 5.0 v) ........................................................................................................................................ 5 april 201 5 ? rev.a.1 to rev.a.2 update the electrical characteristics v ih ( 0.9v v cc 1.8v ) 1.5v - 0.8v cc ................................................................................................................................................................... 4 january 201 5 ? rev.a to rev.a.1 update the electrical characteristics switch current limit ............................................................................................................................................................................................ 4 add dot on pin 1 sot - 23 -6 ............................................................................................................................................................................ 3, 14 changes from original ( january 20 13 ) to rev.a changed from product preview to production data ............................................................................................................................................. all a ll data sheet.com
package information tx00034.000 sg micro corp www.sg- micro.com package outline dimensions sot - 23 -6 symbol dimensions in millimeters dimensions in inches min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0. 5 00 0.012 0.0 20 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950 bsc 0.037 bsc e1 1.90 0 bsc 0.075 bsc l 0.300 0.600 0.012 0.024 0 8 0 8 e e1 e e1 b d a1 a2 a c l 0.2 2.59 0.99 0.95 0.69 recommended land pattern (unit: mm) a ll data sheet.com
package information tx10000.000 sg micro corp www.sg- micro.com tape and reel information note: the picture is only for reference. please make the object as the standard. key parameter list of tape and reel package type reel diameter reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p0 (mm) p1 (mm) p2 (mm) w (mm) pin1 quadrant dd0001 sot -23 -6 7 9.5 3.17 3.23 1.37 4.0 4.0 2.0 8.0 q3 reel width (w1) reel diameter reel dimensions tape dimensions direction of feed p2 p0 w p1 a0 k0 b0 q1 q2 q4 q3 q3 q4 q2 q1 q3 q4 q2 q1 a ll data sheet.com
package information tx20000.000 sg micro corp www.sg- micro.com carton box dimensions note: the picture is only for reference. please make the object as the standard. key parameter list of carton box reel type length (mm) width (mm) height (mm) pizza/carton dd0002 7 (option) 368 227 224 8 7 442 410 224 18 a ll data sheet.com

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