STMPS2242, STMPS2252 STMPS2262, STMPS2272 Enhanced dual-channel power switches Features ■ 100 mΩ 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 µA maximum standby supply current ■ Ambient temperature range: -40 °C to 85 °C ■ 8 kV ESD protection ■ Reverse current protection ■ Fault blanking SO-8 MSOP8 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. 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 mΩ MOSFET high-side power switches for power distribution systems that require multiple power switches in a single package. Table 1. Device summary Order code Current limit Enable Packing 500 Active low Tape and reel STMPS2252TTR 500 Active high Tape and reel STMPS2262MTR STMPS2262TTR 1000 Active low Tape and reel STMPS2272MTR STMPS2272TTR 1000 Active high Tape and reel SO-8 MSOP8(1) (mA) STMPS2242MTR STMPS2242TTR STMPS2252MTR 1. MSOP8 is also known as TSSOP8. January 2011 Doc ID 15050 Rev 3 1/42 www.st.com 42 Contents STMPS2242, STMPS2252, STMPS2262, STMPS2272 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 3.1 Fault blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.2 Overcurrent/overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 Reverse current blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.1 6.2 7 2/42 6.1.1 Turn-on/off characteristics for VI = 3 V, RLOAD = 6 Ω . . . . . . . . . . . . . . . 13 6.1.2 Turn-on/off characteristics for VI = 5 V, RLOAD = 10 Ω . . . . . . . . . . . . . . 16 6.1.3 UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6.1.4 Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.1.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 STMPS2262, STMPS2272 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24 6.2.1 Turn-on/off characteristics for VI = 3 V, RLOAD = 3 Ω . . . . . . . . . . . . . . . 24 6.2.2 Turn-on/off characteristics for VI = 5 V, RLOAD = 5 Ω . . . . . . . . . . . . . . . 27 6.2.3 UVLO characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.2.4 Overcurrent protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.2.5 Other electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.1 8 STMPS2242, STMPS2252 characteristics . . . . . . . . . . . . . . . . . . . . . . . . 13 Input and output capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 9 Contents Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Doc ID 15050 Rev 3 3/42 List of tables STMPS2242, STMPS2252, STMPS2262, STMPS2272 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. 4/42 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Current limit characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 10 Supply current characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11 Thermal characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 11 UVLO characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12 OCx pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12 ENx pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) . . . . . . . . . . . . . . . 12 SO-8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 MSOP8 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Turn-on for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Turn-on for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Turn-on for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Turn-off for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Turn-off for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Turn-off for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Turn-on for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Turn-on for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Turn-on for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Turn-off for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Turn-off for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Turn-off for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 UVLO, VI rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 UVLO, VI falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Overcurrent protection characteristics, VI = 3 V, RLOAD = 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21 Overcurrent protection characteristics, VI = 5 V, RLOAD = 2.2 Ω . . . . . . . . . . . . . . . . . . . . 21 ICC versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 tr versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 tf versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Rds(on) versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Turn-on for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Turn-on for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Turn-on for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Turn-off for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Turn-off for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Turn-off for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Turn-on for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Turn-on for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Turn-on for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Turn-off for CLOAD = 1 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Turn-off for CLOAD = 100 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Turn-off for CLOAD = 470 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 UVLO, VI rising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 UVLO, VI falling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Overcurrent protection characteristics, VI = 3 V, RLOAD = 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32 Overcurrent protection characteristics, VI = 5 V, RLOAD = 1 Ω . . . . . . . . . . . . . . . . . . . . . . 32 ICC versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 tr versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 tf versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Rds(on) versus VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 SO-8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 MSOP8 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 SO-8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 MSOP8 carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Doc ID 15050 Rev 3 5/42 Block diagram 1 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Block diagram Figure 1. Block diagram /54 ). #URRENT SENSE %. $RIVER /# 56,/ 4HERMAL SENSE &AULTBLANKINGREPORTING DRIVERCONTROLUNIT /# #URRENT SENSE %. /54 $RIVER !-6 6/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 2 Pin descriptions Pin descriptions Figure 2. Table 2. Pinout GND 1 8 OC1 IN 2 7 OUT1 EN1 3 6 OUT2 EN2 4 5 OC2 Pin descriptions Pin number Name Type Function 1 GND 2 IN − − 3 EN1/EN1 I Channel 1 active low (STMPS2242 and STMPS2262) or active high (STMPS2252 and STMPS2272) enable 4 EN2/EN2 I Channel 2 active low (STMPS2242 and STMPS2262) or active high (STMPS2252 and STMPS2272) enable 5 OC2 O Open drain output for fault indication of channel 2 6 OUT2 7 OUT1 − − 8 OC1 O Ground VCC input, 2.7 - 5.5 V Output of channel 2 Output of channel 1 Open drain output for fault indication of channel 1 Doc ID 15050 Rev 3 7/42 Functional description STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 faultblanking. 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 (VCC=0 V), the switch behaves as a Hi-Z at the output pin, ensuring that no reverse current will flow into the device when VI<VO. Note: In the case where the switch is ON, and a voltage higher than VI is applied to the OUT pin, a reverse current will occur. 3.4 UVLO When the input voltage drops below the threshold value, the power switch turns OFF to prevent improper operation due to low voltage. 8/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 4 Maximum rating 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 implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 4.1 Absolute maximum rating Table 3. Absolute maximum ratings Symbol VI Input voltage range VO Output voltage range VIENx IO ESD TJ TSTG 4.2 Parameter EN input voltage range Continuous output current Value Unit –0.3 – 6.0 V –0.3 – (VI +0.3) V –0.3 – 6.0 V Internally limited ESD protection level 8 kV Junction operating temperature –40 to 125 °C Storage temperature –55 to 150 °C TR Thermal resistance (MSOP8) 220 °C/W TR Thermal resistance (SO-8) 160 °C/W Recommended operating conditions Table 4. Recommended operating conditions Value Symbol Parameter Unit Min Typ Max 2.7 5.0 5.5 V VI Input voltage VO Output voltage 0 5.0 5.5 V IO (STMPS2242 STMPS2252) Continuous output current 0 - 500 mA IO (STMPS2262 STMPS2272) Continuous output current 0 - 1000 mA Doc ID 15050 Rev 3 9/42 Electrical specifications 5 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Electrical specifications Table 5. Electrical characteristics Value Symbol Parameter Test conditions Unit Min Rds(on) Rds(on) tr tf Static drain source ON state resistance Static drain source ON state resistance Max VI = 2.7 V TJ = 25°C 120 160 mΩ VI = 5.0 V TJ = 25°C; 105 115 mΩ VI = 2.7 V -40 < TJ < 125°C 200 VI = 5.0 V -40 < TJ < 125°C 140 mΩ VI = 5.0 V Output rise time RLOAD = 10 Ω (STMPS2242,STMPS2252) CLOAD = 1 µF 0.05 2 ms VI = 5.0 V Output rise time RLOAD = 10 Ω (STMPS2262,STMPS2272) CLOAD = 1 µF 0.05 2 ms VI = 5.0 V Output fall time RLOAD = 10 Ω (STMPS2242,STMPS2252) CLOAD = 1 µF 0.05 2 ms VI = 5.0 V RLOAD = 10 Ω CLOAD = 1 µF 0.05 2 ms Output fall time (STMPS2262,STMPS2272 Table 6. Typ Current limit characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition IOS (STMPS2242 STMPS2252) Short circuit output current I OS (STMPS2262 STMPS2272) 10/42 VI = 5 V OUT connected to GND through 10 mΩ load, device enabled into short circuit Doc ID 15050 Rev 3 Unit Min Typ Max 0.6 0.8 1.0 A 1.1 1.6 2.0 A STMPS2242, STMPS2252, STMPS2262, STMPS2272 Table 7. Electrical specifications Supply current characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Unit Min No load Switch is off Ioff Switch turned off Ileakage Ireverse Max 9 14 μA No load Switch is off -40 < TJ < 125°C 16 No load Switch is on Ion Typ Switch turned on 50 μA No load Switch is on -40 < TJ < 125°C 85 Ioff (grounded output) Ioff (floating output) Output leakage current (1) Reversed leakage current 70 1 2 μA Ioff (grounded output) Ioff (floating output) -40 < TJ < 125°C 1 6 Switch is off VI < VO, Output connected to 5.5 V, 25°C 1 2 Switch is off VI < VO Output connected to 5.5 V, 125°C 1 μA 10 1. Ileakage = Ioff-ground - Ioff, where Ioff-ground = current into IN when switch is off and output is grounded Table 8. Thermal characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Unit Min Typ Max T1 Thermal shutdown threshold 135 °C T2 Recovery from thermal shutdown 125 °C Hysteresis 10 Doc ID 15050 Rev 3 °C 11/42 Electrical specifications Table 9. STMPS2242, STMPS2252, STMPS2262, STMPS2272 UVLO characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Unit Min VUVLO Undervoltage lockout threshold 2.0 Hysteresis Table 10. Typ Max 2.5 75 V mV OCx pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Unit Min Typ Max 4 8 15 ms OC blanking OCx assertion and de-assertion VO Output low voltage IO = 5 mA − − 0.4 V Ioff Off current VOC = 2.7 V, 5.5 V (No OC condition) − − 1.0 µA Table 11. ENx pin characteristics (VI = 5.5 V, IO = rated current, TJ = 25°C, unless otherwise specified) Value Symbol Parameter Test condition Typ Max VI = 2.7 V to 5.5 V 2.0 − − V VIH High level input voltage Low level input voltage VI = 4.5 V to 5.5 V − − 0.8 V VIL VI = 2.7 V to 4.5 V − − 0.4 V Input current VIENx = 0 V or VI -0.5 − 0.5 µA ton Turn ON time(1) RLOAD = 10 Ω CLOAD = 100 μF − − 5 ms toff Turn OFF time (1) RLOAD = 10 Ω CLOAD = 100 μF − − 10 ms II 1. Not tested in production, specified by design. 12/42 Unit Min Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics 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 VI = 3 V, RLOAD = 6 Ω Figure 3. Turn-on for CLOAD = 1 µF Doc ID 15050 Rev 3 13/42 Typical operating characteristics 14/42 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 4. Turn-on for CLOAD = 100 µF Figure 5. Turn-on for CLOAD = 470 µF Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 6. Turn-off for CLOAD = 1 µF Figure 7. Turn-off for CLOAD = 100 µF Doc ID 15050 Rev 3 Typical operating characteristics 15/42 Typical operating characteristics Figure 8. 6.1.2 Turn-off for CLOAD = 470 µF Turn-on/off characteristics for VI = 5 V, RLOAD = 10 Ω Figure 9. 16/42 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Turn-on for CLOAD = 1 µF Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 10. Turn-on for CLOAD = 100 µF Figure 11. Turn-on for CLOAD = 470 µF Doc ID 15050 Rev 3 17/42 Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 12. Turn-off for CLOAD = 1 µF Figure 13. Turn-off for CLOAD = 100 µF 18/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 14. Turn-off for CLOAD = 470 µF Doc ID 15050 Rev 3 19/42 Typical operating characteristics 6.1.3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 UVLO characteristics Figure 15. UVLO, VI rising Figure 16. UVLO, VI falling 20/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 6.1.4 Typical operating characteristics Overcurrent protection characteristics Figure 17. Overcurrent protection characteristics, VI = 3 V, RLOAD = 2.2 Ω Figure 18. Overcurrent protection characteristics, VI = 5 V, RLOAD = 2.2 Ω Doc ID 15050 Rev 3 21/42 Typical operating characteristics 6.1.5 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Other electrical characteristics Figure 19. ICC versus VI 60 50 40 I CC (µA) EN = H 30 EN = L 20 10 0 2 3 4 5 6 VI (V ) AM045006v1 Figure 20. tr versus VI 5.0 4.5 4.0 3.5 3.0 t r (m s) C L OAD = 1 µF or 100 µF 2.5 C L OAD = 4 7 0 µF 2.0 1.5 1.0 0.5 0.0 0 1 2 3 V I (V ) 22/42 Doc ID 15050 Rev 3 4 5 6 AM045007v1 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 21. tf versus VI 14 12 t f (m s) 10 C L OAD = 1 µF 8 C L OAD = 1 0 0 µF 6 C L OAD = 4 7 0 µF 4 2 0 0 1 2 3 4 5 6 V I (V ) AM045008v1 Figure 22. Rds(on) versus VI 130 120 Rd s(o n ) (m Ω) 110 100 90 80 70 60 2 2.5 3 3.5 4 V I (V ) Doc ID 15050 Rev 3 4.5 5 5.5 6 AM045009v1 23/42 Typical operating characteristics 6.2 STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 VI = 3 V, RLOAD = 3 Ω Figure 23. Turn-on for CLOAD = 1 µF 24/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 24. Turn-on for CLOAD = 100 µF Figure 25. Turn-on for CLOAD = 470 µF Doc ID 15050 Rev 3 25/42 Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 26. Turn-off for CLOAD = 1 µF Figure 27. Turn-off for CLOAD = 100 µF 26/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 28. Turn-off for CLOAD = 470 µF 6.2.2 Turn-on/off characteristics for VI = 5 V, RLOAD = 5 Ω Figure 29. Turn-on for CLOAD = 1 µF Doc ID 15050 Rev 3 27/42 Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 30. Turn-on for CLOAD = 100 µF Figure 31. Turn-on for CLOAD = 470 µF 28/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 32. Turn-off for CLOAD = 1 µF Figure 33. Turn-off for CLOAD = 100 µF Doc ID 15050 Rev 3 29/42 Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 34. Turn-off for CLOAD = 470 µF 6.2.3 UVLO characteristics Figure 35. UVLO, VI rising 30/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Typical operating characteristics Figure 36. UVLO, VI falling Doc ID 15050 Rev 3 31/42 Typical operating characteristics 6.2.4 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Overcurrent protection characteristics Figure 37. Overcurrent protection characteristics, VI = 3 V, RLOAD = 1 Ω Figure 38. Overcurrent protection characteristics, VI = 5 V, RLOAD = 1 Ω 32/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Other electrical characteristics Figure 39. ICC versus VI 60 50 I CC (µA) 40 EN = H 30 EN = L 20 10 0 2 3 4 5 6 V I (V ) AM045026v1 Figure 40. tr versus VI 3 2.5 2 C L OAD = 1 µF or 100 µF t r (m s) 6.2.5 Typical operating characteristics 1.5 C L OAD = 4 7 0 µF 1 0.5 0 0 1 2 3 V I (V ) Doc ID 15050 Rev 3 4 5 6 AM045024v1 33/42 Typical operating characteristics STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 41. tf versus VI 7 6 5 C L OAD = 1 µF t f (m s) 4 C L OAD = 1 0 0 µF 3 C L OAD = 4 7 0 µF 2 1 0 0 1 2 3 4 5 6 V I (V ) AM045028v1 Figure 42. Rds(on) versus VI 130 120 Rd s(o n ) (m Ω) 110 100 90 80 70 60 2 2.5 3 3.5 4 4.5 5 5.5 6 V I (V ) AM045029v1 34/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 7 Application information 7.1 Input and output capacitors Application information Input and output capacitors improve the performance of the device; the actual capacitance should be optimized for the particular application. For all applications, a 0.1 µF 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 µF 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 µF) electrolytic capacitor on the output pins is recommended when large transient currents are expected on the output. Doc ID 15050 Rev 3 35/42 Package mechanical data 8 STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 0016023 C 36/42 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Table 12. Package mechanical data SO-8 mechanical data Millimeters Symbol 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) 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 ddd 0° (min.), 8° (max.) − − 0.10 1. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, potrusions or gate burrs shall not exceed 0.15 mm (0.006 inch) in total (both sides). Doc ID 15050 Rev 3 37/42 Package mechanical data STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 44. MSOP8 package outline MSOP8_7277133_C Table 13. MSOP8 mechanical data Millimeters Symbol 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 − 1.95 − e1 38/42 L 0.40 − 0.80 L2 − 0.25 − < 0° − 6° Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 Package mechanical data Figure 45. SO-8 carrier tape 0010914_G Figure 46. MSOP8 carrier tape ?" Doc ID 15050 Rev 3 39/42 Package mechanical data STMPS2242, STMPS2252, STMPS2262, STMPS2272 Figure 47. Reel information Table 14. Reel mechanical data Millimeters Symbol Min A Max 330 C 12.8 D 20.2 N 60 T 40/42 Typ 13.2 22.4 Doc ID 15050 Rev 3 STMPS2242, STMPS2252, STMPS2262, STMPS2272 9 Revision history Revision history Table 15. Document revision history Date Revision Changes 03-Dec-2008 1 Initial release. 18-Dec-2009 2 Modified: Table 6, Table 7 and Table 9. 19-Jan-2011 3 Added Section 6: Typical operating characteristics and Section 7: Application information; minor textual changes. Doc ID 15050 Rev 3 41/42 STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 herein 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 assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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