STMPS2262MTR STMicroelectronics

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 SO-8 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 MSOP8 Ambient temperature range: -40 C to 85 C Each switch is controlled by an independent logic 8 kV ESD protection enable input. When the output load exceeds the Reverse current protection current limit threshold or a short is present, these Fault blanking devices limit the output current to a safe level by switching into a constant current mode, pulling the overcurrent (OCx) logic output low. When Description continuous heavy overloads and short-circuits increase the power dissipation in the switch, The STMPS2242/2252/2262/2272 power causing the junction temperature to rise, a distribution switches are intended for applications thermal protection circuit shuts off the switch to where heavy capacitive loads and short-circuits prevent damage. Recovery from a thermal are likely to be encountered. These devices shutdown is automatic once the device has incorporate 100 m MOSFET high-side power cooled sufficiently. Internal circuitry ensures the switches for power distribution systems that switch remains off until valid input voltage is require multiple power switches in a single present. package. Table 1. Device summary Order code Current limit Enable Packing (1) (mA) SO-8 MSOP8 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. January 2011 Doc ID 15050 Rev 3 1/42 www.st.com 42Contents STMPS2242, STMPS2252, STMPS2262, STMPS2272 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 characteristics . 13 6.1 STMPS2242, STMPS2252 characteristics 13 6.1.1 Turn-on/off characteristics for V = 3 V, R = 6 . 13 I LOAD 6.1.2 Turn-on/off characteristics for V = 5 V, R = 10 16 I LOAD 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 = 3 V, R = 3 . 24 I LOAD 6.2.2 Turn-on/off characteristics for V = 5 V, R = 5 . 27 I LOAD 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 2/42 Doc ID 15050 Rev 3