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sanken electric co., ltd. description str3a100 series are power ics for switching power supplies, incorporating a power mosfet and a current mode pwm controller ic in one package. including a startup circuit and a standby function in the controller, the product achieves low power consumption, low standby power, and high cost-effectiveness in power supply systems, while reducing external components. the products are provided in an industry standard dip8 package. features and benefits ? current mode pwm control ? built-in random switching function: reduces emi noise, simplifies emi filters, and cuts cost by external part reduction ? built-in slope compensation function: avoids subharmonic oscillation ? built-in leading edge blanking (leb) function ? auto standby function: ? input power, p in < 10 mw at no load with low power consumption shunt regulator ? normal load operation: pwm switching ? light load operation: standby mode (burst oscillation) pwm off-line switching regulator ics typical application package: dip8 not to scale STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d continued on the next page? str3a150d-ds applications switching power supplies for electronic devices such as: ? stand-by power supply for lcd/pdp television, desktop pc, multi-function printer, audio equipment, and so forth ? small switched-mode power supply (smps) for printer, bd/dvd player, set-top box, and so forth ? auxiliary power supply for air conditioner, refrigerator, washer, dishwasher, and so forth july 20, 2012 vac c1 c5 r3 d3 d2 r2 c2 t1 d4 c6 r4 r5 u2 r9 r7 c7 d p s pc1 pc1 c3 r ocp c9 crd snubber circuit d1 r6 r8 l2 c8 c, rc damper snubber circuit vout gnd c4 1234 d/st d/st vcc nc s/ocp fb/olp gnd d/st d/st 87 65 str3a100 u1
2 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d features and benefits (continued) ? soft start function: reduces stress on internal power mosfet and secondary output rectifier diode at startup ? protection functions: ? overcurrent protection function (ocp); pulse-by-pulse, built-in compensation circuit to minimize ocp point variation on ac input voltage ? overload protection function (olp); auto restart, built-in timer, reduces heat during overload condition, and no external components required ? overvoltage protection function (ovp); auto restart ? thermal shutdown function (tsd); auto restart selection guide part number f osc (khz) mosfet p out * (w) ovp/tsd v dss (min) (v) r ds(on) (max) ( ) 230 vac 85 to 265 vac STR3A151D 67 650 4.0 24 16 auto restart str3a152d 3.0 30 23 str3a153d 1.9 36 30 str3a154d 1.4 40 32 str3a155d 1.1 43 35 *the listed output power is based on the thermal ratings, and the peak output power can be 120% to 140% of the value stated here. at low output voltage and short duty cycle, the output power may be less than the value stated here.
3 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d absolute maximum ratings unless specifically noted, t a is 25c characteristic symbol notes pins rating unit drain peak current 1 i dpeak STR3A151D single pulse 8 ? 1 3.6 a str3a152d 4 a str3a153d 5.2 a str3a154d 6.4 a str3a155d 7.2 a avalanche energy 2 e as STR3A151D single pulse, i lpeak = 2.13 a 8 ? 1 53 mj str3a152d single pulse, i lpeak = 2.19 a 56 mj str3a153d single pulse, i lpeak = 2.46 a 72 mj str3a154d single pulse, i lpeak = 2.66 a 83 mj str3a155d single pulse, i lpeak = 3.05 a 110 mj s/ocp pin voltage v ocp 1 ? 3 ? 2 to 6 v control part input voltage v cc 2 ? 332v fb/olp pin voltage v fb 4 ? 3 ? 0.3 to 14 v fb/olp pin sink current i fb 4 ? 3 1.0 ma mosfet power dissipation 3 p d1 STR3A151D str3a152d mounted on 15 mm 15 mm printed circuit board 8 ? 1 1.68 w str3a153d str3a154d 1.76 w str3a155d 1.81 w control part power dissipation p d2 v cc i cc 2 ? 3 1.3 w operating ambient temperature t op ? ? 40 to 125 c storage temperature t stg ? ? 40 to 125 c channel temperature t ch ? 150 c 1 refer to mosfet safe operating area curve. 2 refer to mosfet avalanche energy derating coefficient curve. 3 refer to mosfet temperature versus power dissipation curve. the polarity value for current specifies a sink as "+," and a source as ? ? ,? referencing the ic.
4 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d electrical characteristics of control part unless specifically noted, t a is 25c, v cc = 18 v characteristic symbol test conditions pins min. typ. max. unit operation start voltage v cc(on) 2 ? 3 13.8 15.3 16.8 v operation stop voltage* v cc(off) 2 ? 3 7.3 8.1 8.9 v circuit current in operation i cc(on) v cc = 12 v 2 ? 3 ?? 2.5 ma minimum start voltage v st(on) 8 ? 3 ? 40 ? v startup current i startup v cc = 13.5 v 2 ? 3 ? 3.9 ? 2.5 ? 1.1 ma startup current threshold biasing voltage* v cc(bias) 2 ? 3 8.5 9.5 10.5 v average operation frequency f osc(avg) 8 ? 3 60 67 74 khz frequency modulation deviation f 8 ? 3 ? 5 ? khz maximum duty cycle d max 8 ? 3 65 74 83 % leading edge blanking time t bw ? ? 350 ? ns ocp compensation coefficient dpc ? ? 17 ? mv/ s ocp compensation duty cycle limit d dpc ?? 36 ? % ocp threshold voltage at zero duty cycle v ocp(l) 1 ? 3 0.69 0.78 0.87 v ocp threshold voltage at 36% duty cycle v ocp(h) 1 ? 3 0.79 0.88 0.97 v maximum feedback current i fb(max) 4 ? 3 ? 110 ? 70 ? 35 a minimum feedback current i fb(min) 4 ? 3 ? 30 ? 15 ? 7 a fb/olp oscillation stop threshold voltage v fb(off) STR3A151D str3a152d str3a153d v cc = 32 v 4 ? 3 1.09 1.21 1.33 v str3a154d str3a155d v cc = 32 v 4 ? 3 0.85 0.98 1.09 v olp threshold voltage v fb(olp) v cc = 32 v 4 ? 3 7.3 8.1 8.9 v olp operation current i cc(olp) v cc = 12 v 2 ? 3 ? 230 ? a olp delay time t olp ? 547086ms fb/olp clamp voltage v fb(clamp) 4 ? 3 11.0 12.8 14.0 v ovp threshold voltage v cc(ovp) 2 ? 3 27.5 29.5 31.5 v thermal shutdown activating temperature t j(tsd) ? 135 ?? c *v cc(bias) > v cc(off) always.
5 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d electrical characteristics of mosfet unless specifically noted, t a is 25c characteristic symbol test conditions pins min. typ. max. unit drain-to-source breakdown voltage v dss 8 ? 1 650 ? ? v drain leakage current i dss 8 ? 1 ? ? 300 a on-resistance r ds(on) STR3A151D 8 ? 1 ? ? 4.0 str3a152d ? ? 3.0 str3a153d ? ? 1.9 str3a154d ? ? 1.4 str3a155d ? ? 1.1 switching time t f 8 ? 1 ? ? 250 ns thermal resistance r ch-c STR3A151D str3a152d str3a153d the thermal resistance between channel and case. case temperature (t c ) is measured at the center of the branded side. ? ? ? 18 c/w str3a154d str3a155d ? ? ? 17 c/w
6 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d 10 1 0.1 0.01 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 ?6 10 ?5 10 ?4 10 ?3 10 ?2 10 ?1 ambient temperature, t a (c) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 p d1 = 1.68 w mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 0 25 50 75 100 125 150 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 1 10 100 1000 drain current, i d (a) mosfet safe operating area curve drain current limited by on-resistance single pulse, t a = 25c 1 ms 0.1 ms to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left channel temperature, t ch (c) 100 80 60 40 20 0 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 0 25 50 75 100 125 150 characteristic performance STR3A151D
7 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d 100 10 1 0.1 0.01 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 ?6 10 ?5 10 ?4 10 ?3 10 ?2 10 ?1 ambient temperature, t a (c) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 p d1 = 1.68 w mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 0 25 50 75 100 125 150 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 1 10 100 1000 drain current, i d (a) mosfet safe operating area curve drain current limited by on-resistance single pulse, t a = 25c 1 ms 0.1 ms to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left channel temperature, t ch (c) 100 80 60 40 20 0 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 0 25 50 75 100 125 150 characteristic performance str3a152d
8 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d 10 1 0.1 0.01 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 ?6 10 ?5 10 ?4 10 ?3 10 ?2 10 ?1 ambient temperature, t a (c) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 p d1 = 1.76 w mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 0 25 50 75 100 125 150 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 1 10 100 1000 drain current, i d (a) mosfet safe operating area curve drain current limited by on-resistance single pulse, t a = 25c 1 ms 0.1 ms to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left channel temperature, t ch (c) 100 80 60 40 20 0 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 0 25 50 75 100 125 150 characteristic performance str3a153d
9 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d 10 1 0.1 0.01 0.001 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 ?6 10 ?5 10 ?4 10 ?3 10 ?2 10 ?1 ambient temperature, t a (c) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 p d1 = 1.76 w mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 0 25 50 75 100 125 150 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 1 10 100 1000 drain current, i d (a) mosfet safe operating area curve drain current limited by on-resistance single pulse, t a = 25c 1 ms 0.1 ms to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left channel temperature, t ch (c) 100 80 60 40 20 0 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 0 25 50 75 100 125 150 characteristic performance str3a154d
10 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d 10 1 0.1 0.01 transient thermal resistance, r ch-c (c/w) transient thermal resistance curve time (s) 10 ?6 10 ?5 10 ?4 10 ?3 10 ?2 10 ?1 ambient temperature, t a (c) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 p d1 = 1.81 w mosfet temperature versus power dissipation curve allowable power dissipation, p d1 (w) 0 25 50 75 100 125 150 channel temperature, t ch (c) 100 80 60 40 20 0 25 50 75 125 100 150 eas temperature derating coefficient (%) mosfet avalanche energy derating coefficient curve drain-to-source voltage, v ds (v) 10 1 0.1 0.01 1 10 100 1000 drain current, i d (a) mosfet safe operating area curve drain current limited by on-resistance single pulse, t a = 25c 1 ms 0.1 ms to use this graph, apply the s.o.a temperature derating coefficient taken from the graph at the left channel temperature, t ch (c) 100 80 60 40 20 0 safe operating area temperature derating coefficient (%) s. o. a. temperature derating coefficient curve 0 25 50 75 100 125 150 characteristic performance str3a155d
11 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d functional block diagram functional block diagram functional block diagram pin-out diagram leb ocp drv tsd ovp uvlo reg v reg olp pwm oscillator v cc fb/olp s/ocp d/st gnd control part 4 1 3 vcc 2 5, 6, 7, 8 drain peak current compensation slope compensation feedback control startup s q r pin list table number name function 1 s/ocp mosfet source and input of overcurrent protection (ocp) signal 2 vcc power supply voltage input for control part and input of overvoltage protection (ovp) signal 3 gnd ground 4 fb/olp feedback signal input for constant voltage control signal and input of overload protection (olp) signal 5, 6,7, 8 d/st mosfet drain pin and input of the startup current 1 2 3 4 8 7 6 5 d/st d/st d/st d/st s/gnd vcc gnd fb/olp
12 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d package diagram dip8 package 0 . 2 5 + 0 . 1 - 0 . 0 5 6.5 1 4 5 8 9.4 0.3 0.5 0.1 0.89 typ 4.2 0.3 3.3 3.4 0.1 0.2 (7.6 typ) 2.54 typ -0.05 -0.05 0.2 0.5 7.5 +0.3 +0.3 1.0 1.52 unit mm part number lot number sanken control number 3a15 x d sk ymd y is the last digit of the year (0 to 9) m is the month (1 to 9, o, n, or d) d is a period of days: 1 ? 1 st to 10 th 2 ? 11 th to 20 th 3 ? 21 st to 31 st pb-free. device composition compliant with the rohs directive.
13 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d because reliability can be affected adversely by improper storage environments and handling methods, please observe the following cautions. cautions for storage ? ensure that storage conditions comply with the standard temperature (5c to 35c) and the standard relative humidity (around 40% to 75%); avoid storage locations that experience extreme changes in temperature or humidity. ? avoid locations where dust or harmful gases are present and avoid direct sunlight. ? reinspect for rust on leads and solderability of the products that have been stored for a long time. cautions for testing and handling when tests are carried out during inspection testing and other standard test periods, protect the products from power surges from the testing device, shorts between the product pins, and wrong connections. ensure all test parameters are within the ratings specified by sanken for the products. remarks about using silicone grease with a heatsink ? when silicone grease is used in mounting the products on a heatsink, it shall be applied evenly and thinly. if more silicone grease than required is applied, it may produce excess stress. ? volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. silicone greases with low consistency (hard grease) may cause cracks in the mold resin when screwing the products to a heatsink. our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product life, are indicated below: type suppliers g746 shin-etsu chemical co., ltd. yg6260 momentive performance materials inc. sc102 dow corning toray co., ltd. soldering ? when soldering the products, please be sure to minimize the working time, within the following limits: 2605c 101 s (flow, 2 times) 38010c 3.50.5 s (soldering iron, 1 time) ? soldering should be at a distance of at least 1.5 mm from the body of the products. electrostatic discharge ? when handling the products, the operator must be grounded. grounded wrist straps worn should have at least 1 m of resistance from the operator to ground to prevent shock hazard, and it should be placed near the operator. ? workbenches where the products are handled should be grounded and be provided with conductive table and floor mats. ? when using measuring equipment such as a curve tracer, the equipment should be grounded. ? when soldering the products, the head of soldering irons or the solder bath must be grounded in order to prevent leak voltages generated by them from being applied to the products. ? the products should always be stored and transported in sanken shipping containers or conductive containers, or be wrapped in aluminum foil.
14 sanken electric co., ltd. str3a150d-ds july 20, 2012 pwm off-line switching regulator ics STR3A151D, str3a152d, str3a153d, str3a154d, str3a155d ? the contents in this document are subject to changes, for improvement and other purposes, without notice. make sure that this is the latest revision of the document before use. ? application and operation examples described in this document are quoted for the sole purpose of reference for the use of the prod- ucts herein and sanken can assume no responsibility for any infringement of industrial property rights, intellectual property r ights or any other rights of sanken or any third party which may result from its use. ? although sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of se micon- ductor products at a certain rate is inevitable. users of sanken products are requested to take, at their own risk, preventativ e measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. ? sanken products listed in this document are designed and intended for the use as components in general purpose electronic equ ip- ment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). when considering the use of sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), and whenever long life expectancy is required even in general purpose electronic equipment or apparatus, please contact your nearest sanken sales representative to discuss, prior to the use of the products herein. the use of sanken products without the written consent of sanken in the applications where extremely high reliability is requi red (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited. ? in the case that you use sanken products or design your products by using sanken products, the reliability largely depends on the degree of derating to be made to the rated values. derating may be interpreted as a case that an operation range is set by dera ting the load from each rated value or surge voltage or noise is considered for derating in order to assure or improve the reliability. in general, derating factors include electric stresses such as electric voltage, electric current, electric power etc., environmental stres ses such as ambient temperature, humidity etc. and thermal stress caused due to self-heating of semiconductor products. for these stress es, instantaneous values, maximum values and minimum values must be taken into consideration. in addition, it should be noted that since power devices or ic's including power devices have large self-heating value, the de gree of derating of junction temperature affects the reliability significantly. ? when using the products specified herein by either (i) combining other products or materials therewith or (ii) physically, ch emically or otherwise processing or treating the products, please duly consider all possible risks that may result from all such uses in advance and proceed therewith at your own responsibility. ? anti radioactive ray design is not considered for the products listed herein. ? sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out of sanken's dis tribu- tion network. ? the contents in this document must not be transcribed or copied without sanken's written consent.

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