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january 2011 doc id 15050 rev 3 1/42 42 STMPS2242, stmps2252 stmps2262, stmps2272 enhanced dual-channel power switches features 100 m high-side mosfet switch 500 ma/1000 ma continuous current per channel thermal protection independent short-circuit protection with overcurrent logic output operating range from 2.7 v to 5.5 v cmos and ttl compatible inputs 2.5 ms typical rise time undervoltage lockout 13 a maximum standby supply current ambient temperature range: -40 c to 85 c 8 kv esd protection reverse current protection fault blanking description the STMPS2242/2252/2262/2272 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. these devices incorporate 100 m mosfet high-side power switches for power distribution systems that require multiple power switches in a single package. each switch is controlled by an independent logic enable input. when the output load exceeds the current limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant current mode, pulling the overcurrent (ocx) logic output low. when continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. recovery from a thermal shutdown is automatic once the device has cooled sufficiently. internal circuitry ensures the switch remains off until valid input voltage is present. so-8 msop8 table 1. device summary order code current limit (ma) enable packing so-8 msop8 (1) STMPS2242mtr STMPS2242ttr 500 active low tape and reel stmps2252mtr stmps2252ttr 500 active high tape and reel stmps2262mtr stmps2262ttr 1000 active low tape and reel stmps2272mtr stmps2272ttr 1000 active high tape and reel 1. msop8 is also known as tssop8. www.st.com
contents STMPS2242, stmps2 252, stmps2262, stmps2272 2/42 doc id 15050 rev 3 contents 1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.2 overcurrent/overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 reverse current blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 uvlo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 typical operating char acteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1 STMPS2242, stmps2252 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1.1 turn-on/off characteristics for v i = 3 v, r load = 6 . . . . . . . . . . . . . . . 13 6.1.2 turn-on/off characteristics for v i = 5 v, r load = 10 . . . . . . . . . . . . . . 16 6.1.3 uvlo characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.1.4 overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.1.5 other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6.2 stmps2262, stmps2272 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24 6.2.1 turn-on/off characteristics for v i = 3 v, r load = 3 . . . . . . . . . . . . . . . 24 6.2.2 turn-on/off characteristics for v i = 5 v, r load = 5 . . . . . . . . . . . . . . . 27 6.2.3 uvlo characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.2.4 overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.2.5 other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.1 input and output capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
STMPS2242, stmps2252, stmp s2262, stmps2272 contents doc id 15050 rev 3 3/42 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
list of tables STMPS2242, st mps2252, stmps2262, stmps2272 4/42 doc id 15050 rev 3 list of tables table 1. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 table 2. pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 3. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 4. recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 5. electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 6. current limit characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 10 table 7. supply current characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 11 table 8. thermal characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 11 table 9. uvlo characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 12 table 10. ocx pin characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 12 table 11. enx pin characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) . . . . . . . . . . . . . . . 12 table 12. so-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 table 13. msop8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 table 14. reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 table 15. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
STMPS2242, stmps2252, stmps2262 , stmps2272 list of figures doc id 15050 rev 3 5/42 list of figures figure 1. block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 figure 2. pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 figure 3. turn-on for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 figure 4. turn-on for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 5. turn-on for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 6. turn-off for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 7. turn-off for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 8. turn-off for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 9. turn-on for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 10. turn-on for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 11. turn-on for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 12. turn-off for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 13. turn-off for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 14. turn-off for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 15. uvlo, v i rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 16. uvlo, v i falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 17. overcurrent prot ection characteristics, v i = 3 v, r load = 2.2 . . . . . . . . . . . . . . . . . . . . 21 figure 18. overcurrent prot ection characteristics, v i = 5 v, r load = 2.2 . . . . . . . . . . . . . . . . . . . . 21 figure 19. i cc versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 20. t r versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 21. t f versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 22. rds(on) versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 23. turn-on for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 figure 24. turn-on for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 figure 25. turn-on for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 figure 26. turn-off for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 figure 27. turn-off for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 figure 28. turn-off for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 figure 29. turn-on for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 figure 30. turn-on for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 figure 31. turn-on for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 figure 32. turn-off for c load = 1 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 figure 33. turn-off for c load = 100 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 figure 34. turn-off for c load = 470 f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 figure 35. uvlo, v i rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 figure 36. uvlo, v i falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 figure 37. overcurrent prot ection characteristics, v i = 3 v, r load = 1 . . . . . . . . . . . . . . . . . . . . . . 32 figure 38. overcurrent prot ection characteristics, v i = 5 v, r load = 1 . . . . . . . . . . . . . . . . . . . . . . 32 figure 39. i cc versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 figure 40. t r versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 figure 41. t f versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 figure 42. rds(on) versus v i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 figure 43. so-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 figure 44. msop8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 figure 45. so-8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 figure 46. msop8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 figure 47. reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
block diagram STMPS2242, stm ps2252, stmps2262, stmps2272 6/42 doc id 15050 rev 3 1 block diagram figure 1. block diagram $river 4hermal sense 56,/ /54 $river /54 &aultblankingreporting drivercontrolunit /# /# ). %. %. #urrent sense #urrent sense !-6
STMPS2242, stmps2252, stmps2262 , stmps2272 pin descriptions doc id 15050 rev 3 7/42 2 pin descriptions figure 2. pinout table 2. pin descriptions pin number name type function 1gnd ? ground 2in ? v cc input, 2.7 - 5.5 v 3en1 /en1 i channel 1 active low (STMPS2242 and stmps2262) or active high (stmps2252 and stmps2272) enable 4en2 /en2 i channel 2 active low (STMPS2242 and stmps2262) or active high (stmps2252 and stmps2272) enable 5oc2 o open drain output for fault indication of channel 2 6out2 ? output of channel 2 7out1 ? output of channel 1 8oc1 o open drain output for fault indication of channel 1 1 2 3 4 8 7 6 5 gnd in en1 en2 oc1 out1 out2 oc2
functional description STMPS2242, stmps2252, stmps2262, stmps2272 8/42 doc id 15050 rev 3 3 functional description 3.1 fault blanking the stmps devices feature a 10 ms fault blanking. fault blanking allows current-limit faults, including momentary short-circuit faults that occur when hot-swapping a capacitive load, and also ensures that no fault is issued during power-up. when a load transient causes the device to enter current limit, an internal counter starts. if the load fault persists beyond the 10 ms fault-blanking timeout, the fault output asserts ?low?. load-transient faults less than 10 ms (typ.) do not cause a fault output assertion. only current-limit faults have fault- blanking. die overtemperature faults and input voltage drops below the uvlo threshold cause an immediate fault output. 3.2 overcurrent/overtemperature protection in overcurrent or short-circuit condition, the switch limits the current at 500 ma for STMPS2242/stmps2252 and 1000 ma for stmps2262/stmps2272. if the temperature of the die goes above the limit value, the switch turns off. 3.3 reverse current blocking when the switch is off, or when the stmps device is not powered (v cc =0 v), the switch behaves as a hi-z at the output pin, ensuring that no reverse current will flow into the device when v i STMPS2242, stmps2252, stmps2262 , stmps2272 maximum rating doc id 15050 rev 3 9/42 4 maximum rating stressing the device above the rating listed in the absolute maximum ratings table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not imp lied. exposure to absolute ma ximum rating conditions for extended periods may affect device reliability. 4.1 absolute maximum rating 4.2 recommended operating conditions table 3. absolute maximum ratings symbol parameter value unit v i input voltage range ?0.3 ? 6.0 v v o output voltage range ?0.3 ? (v i +0.3) v v ienx en input voltage range ?0.3 ? 6.0 v i o continuous output current internally limited esd esd protection level 8 kv t j junction operating temperature ?40 to 125 c t stg storage temperature ?55 to 150 c t r thermal resistance (msop8) 220 c/w t r thermal resistance (so-8) 160 c/w table 4. recommended operating conditions symbol parameter value unit min typ max v i input voltage 2.7 5.0 5.5 v v o output voltage 0 5.0 5.5 v i o (STMPS2242 stmps2252) continuous output current 0 - 500 ma i o (stmps2262 stmps2272) continuous output current 0 - 1000 ma
electrical specifications STMPS2242, stmps2252, stmps2262, stmps2272 10/42 doc id 15050 rev 3 5 electrical specifications table 5. electrical characteristics symbol parameter test conditions value unit min typ max rds(on) static drain source on state resistance v i =2.7v t j = 25c 120 160 m v i =5.0v t j = 25c; 105 115 m rds(on) static drain source on state resistance v i =2.7v -40 < t j <125c 200 m v i =5.0v -40 < t j <125c 140 t r output rise time (STMPS2242,stmps2252) v i =5.0v r load =10 c load =1 f 0.05 2 ms output rise time (stmps2262,stmps2272) v i =5.0v r load =10 c load =1 f 0.05 2 ms t f output fall time (STMPS2242,stmps2252) v i =5.0v r load =10 c load =1 f 0.05 2 ms output fall time (stmps2262,stmps2272 v i =5.0v r load =10 c load =1 f 0.05 2 ms table 6. current limit characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max i os (STMPS2242 stmps2252) short circuit output current v i =5v out connected to gnd through 10 m load, device enabled into short circuit 0.6 0.8 1.0 a i os (stmps2262 stmps2272) 1.1 1.6 2.0 a
STMPS2242, stmps2252, stmps2262, st mps2272 electrical specifications doc id 15050 rev 3 11/42 table 7. supply current characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max i off switch turned off no load switch is off 914 a no load switch is off -40 < t j < 125c 16 i on switch turned on no load switch is on 50 70 a no load switch is on -40 < t j < 125c 85 i leakage output leakage current (1) 1. i leakage = i off-ground - i off , where i off-ground = current into in when switch is off and output is grounded i off (grounded output) - i off (floating output) 12 a i off (grounded output) - i off (floating output) -40 < t j < 125c 16 i reverse reversed leakage current switch is off v i < v o , output connected to 5.5 v, 25c 12 a switch is off v i < v o output connected to 5.5 v, 125c 110 table 8. thermal characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max t1 thermal shutdown threshold 135 c t2 recovery from thermal shutdown 125 c hysteresis 10 c
electrical specifications STMPS2242, stmps2252, stmps2262, stmps2272 12/42 doc id 15050 rev 3 table 9. uvlo characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max v uvlo undervoltage lockout threshold 2.0 2.5 v hysteresis 75 mv table 10. ocx pin characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max oc blanking ocx assertion and de-assertion 4815ms v o output low voltage i o =5ma ?? 0.4 v i off off current v oc = 2.7v, 5.5v (no oc condition) ?? 1.0 a table 11. enx pin characteristics (v i = 5.5 v, i o = rated current, t j = 25c, unless otherwise specified) symbol parameter test condition value unit min typ max v ih high level input voltage v i = 2.7 v to 5.5 v 2.0 ?? v v il low level input voltage v i = 4.5 v to 5.5 v ?? 0.8 v v i = 2.7 v to 4.5 v ?? 0.4 v i i input current v ienx =0v or v i -0.5 ? 0.5 a t on turn on time (1) 1. not tested in production, specified by design. r load =10 c load = 100 f ?? 5ms t off turn off time (1) r load =10 c load = 100 f ?? 10 ms
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 13/42 6 typical operating characteristics 6.1 STMPS2242, stmps2252 characteristics the waveforms and characteristics shown in this section pertain to the stmps2252 device. the STMPS2242 is expected to have the same characteristics with inverted en input function. all measurements are at ambient temperature 25 c. 6.1.1 turn-on/off characteristics for v i = 3 v, r load = 6 figure 3. turn-on for c load = 1 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 14/42 doc id 15050 rev 3 figure 4. turn-on for c load = 100 f figure 5. turn-on for c load = 470 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 15/42 figure 6. turn-off for c load = 1 f figure 7. turn-off for c load = 100 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 16/42 doc id 15050 rev 3 figure 8. turn-off for c load = 470 f 6.1.2 turn-on/off characteristics for v i = 5 v, r load = 10 figure 9. turn-on for c load = 1 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 17/42 figure 10. turn-on for c load = 100 f figure 11. turn-on for c load = 470 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 18/42 doc id 15050 rev 3 figure 12. turn-off for c load = 1 f figure 13. turn-off for c load = 100 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 19/42 figure 14. turn-off for c load = 470 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 20/42 doc id 15050 rev 3 6.1.3 uvlo characteristics figure 15. uvlo, v i rising figure 16. uvlo, v i falling
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 21/42 6.1.4 overcurrent prot ection characteristics figure 17. overcurrent protection characteristics, v i = 3 v, r load = 2.2 figure 18. overcurrent protection characteristics, v i = 5 v, r load = 2.2
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 22/42 doc id 15050 rev 3 6.1.5 other electrical characteristics figure 19. i cc versus v i figure 20. t r versus v i 0 10 20 30 40 50 60 23456 i cc (a) v i (v ) en = h en = l am045006v1 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0123456 t r (m s) v i (v ) c l oad = 1 f or 100 f c l oad = 470 f am045007v1
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 23/42 figure 21. t f versus v i figure 22. rds(on) versus v i 0 2 4 6 8 10 12 14 0123456 t f (m s) v i (v ) c l oad = 1 f c l oad = 100 f c l oad = 470 f am04500 8 v1 60 70 80 90 100 110 120 130 2 2.5 3 3.5 4 4.5 5 5.5 6 rds(on) (m ) v i (v ) am045009v1
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 24/42 doc id 15050 rev 3 6.2 stmps2262, stmps2272 characteristics the waveforms and characteristics shown in this section pertain to the stmps2272 device. the stmps2262 is expected to have the same characteristics with inverted en input function. all measurements are at ambient temperature 25 c. 6.2.1 turn-on/off characteristics for v i = 3 v, r load = 3 figure 23. turn-on for c load = 1 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 25/42 figure 24. turn-on for c load = 100 f figure 25. turn-on for c load = 470 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 26/42 doc id 15050 rev 3 figure 26. turn-off for c load = 1 f figure 27. turn-off for c load = 100 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 27/42 figure 28. turn-off for c load = 470 f 6.2.2 turn-on/off characteristics for v i = 5 v, r load = 5 figure 29. turn-on for c load = 1 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 28/42 doc id 15050 rev 3 figure 30. turn-on for c load = 100 f figure 31. turn-on for c load = 470 f
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 29/42 figure 32. turn-off for c load = 1 f figure 33. turn-off for c load = 100 f
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 30/42 doc id 15050 rev 3 figure 34. turn-off for c load = 470 f 6.2.3 uvlo characteristics figure 35. uvlo, v i rising
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 31/42 figure 36. uvlo, v i falling
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 32/42 doc id 15050 rev 3 6.2.4 overcurrent prot ection characteristics figure 37. overcurrent protection characteristics, v i = 3 v, r load = 1 figure 38. overcurrent protection characteristics, v i = 5 v, r load = 1
STMPS2242, stmps2252, stmps2262, stmps2272 typical operating characteristics doc id 15050 rev 3 33/42 6.2.5 other electrical characteristics figure 39. i cc versus v i figure 40. t r versus v i 0 10 20 30 40 50 60 23456 i cc (a) v i (v ) en = h en = l am045026v1 0 0.5 1 1.5 2 2.5 3 0123456 t r (m s) v i (v ) c l oad = 1 f or 100 f c l oad = 470 f am045024v1
typical operating characteristics stmps2 242, stmps2252, stmps2262, stmps2272 34/42 doc id 15050 rev 3 figure 41. t f versus v i figure 42. rds(on) versus v i 0 1 2 3 4 5 6 7 0123456 t f (m s) v i (v ) c l oad = 1 f c l oad = 100 f c l oad = 470 f am04502 8 v1 60 70 80 90 100 110 120 130 2 2.5 3 3.5 4 4.5 5 5.5 6 rds(on) (m ) v i (v ) am045029v1
STMPS2242, stmps2252, stmps2262, stmps2272 application information doc id 15050 rev 3 35/42 7 application information 7.1 input and output capacitors input and output capacitors improve the perfo rmance of the device; the actual capacitance should be optimized for the particular application. for all applications, a 0.1 f or greater ceramic bypass capacitor between in and gnd as close to the device as possible is recommended for local noise decoupling. this precaution also reduces ringing on the input due to power supply transients. an additional capacitor may be needed on the input to reduce input voltage overshoots from exceeding the absolute maximum voltage of the device during heavy transient conditions. this is especially important during bench testing when long, inductive cables are used to connect the evaluation board to the bench power supply. the value of 100 f may be adequate in most situations. an output capacitor is not required for device functionality, but placing a high-value (in the order of 10 - 100 f) electrolytic capacitor on the output pins is recommended when large transient currents are expected on the output.
package mechanical data STMPS2242, stmps2252, stmps2262, stmps2272 36/42 doc id 15050 rev 3 8 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 43. so-8 package outline 001602 3 c
STMPS2242, stmps2252, stmps2262, stmps2272 package mechanical data doc id 15050 rev 3 37/42 table 12. so-8 mechanical data symbol millimeters min typ max a 1.35 ? 1.75 a1 0.10 ? 0.25 a2 1.10 ? 1.65 b 0.33 ? 0.51 c 0.19 ? 0.25 d (1) 1. dimension d does not include mold fl ash, protrusions or gate burrs. mold flash, potrusions or gate burrs shall not exceed 0.15 mm (0.006 inch) in total (both sides). 4.80 ? 5.00 e 3.80 ? 4.00 e ? 1.27 ? h 5.80 ? 6.20 h 0.25 ? 0.50 l 0.40 ? 1.27 k 0 (min.), 8 (max.) ddd ?? 0.10
package mechanical data STMPS2242, stmps2252, stmps2262, stmps2272 38/42 doc id 15050 rev 3 figure 44. msop8 package outline table 13. msop8 mechanical data symbol millimeters min typ max a ?? 1.10 a1 0 ? 0.15 a2 0.75 0.85 0.95 b 0.22 ? 0.40 c 0.08 ? 0.23 d 2.90 3.00 3.10 d3 ? 2.16 ? e 4.67 4.90 5.07 e1 2.90 3.00 3.10 e5 ? 1.73 ? e ? 0.65 ? e1 1.95 ? l 0.40 ? 0.80 l2 ? 0.25 ? < 0 ? 6 msop8_7277133_c
STMPS2242, stmps2252, stmps2262, stmps2272 package mechanical data doc id 15050 rev 3 39/42 figure 45. so-8 carrier tape figure 46. msop8 carrier tape 0010914_g ?"
package mechanical data STMPS2242, stmps2252, stmps2262, stmps2272 40/42 doc id 15050 rev 3 figure 47. reel information table 14. reel mechanical data symbol millimeters min typ max a 330 c 12.8 13.2 d 20.2 n60 t 22.4
STMPS2242, stmps2252, stmps2262 , stmps2272 revision history doc id 15050 rev 3 41/42 9 revision history table 15. document revision history date revision changes 03-dec-2008 1 initial release. 18-dec-2009 2 modified: ta b l e 6 , ta bl e 7 and ta bl e 9 . 19-jan-2011 3 added section 6: typical operating characteristics and section 7: application information ; minor textual changes.
STMPS2242, st mps2252, stmps2262, stmps2272 42/42 doc id 15050 rev 3 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2011 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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