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STMPS2242 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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STMPS2242 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
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1 / 42 page  January 2011 Doc ID 15050 Rev 3 1/42 42 STMPS2242, STMPS2252 STMPS2262, STMPS2272 Enhanced dual-channel power switches Features ■ 100 m Ω 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 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 Ω 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 |
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