代理產線

ST STMPS2141, STMPS2151

 2013-01-23

【基本資料】

【產品特性】


  • 90 or 100 mΩ high-side MOSFET switch

  • 500/1000 mA continuous current

  • Thermal and short-circuit protection with overcurrent logic output

  • Operating range from 2.7 to 5.5 V

  • CMOS and TTL compatible enable input

  • 2.5 ms typical rise time

  • Undervoltage lockout (UVLO)

  • 12 ~13μA maximum standby supply current

  • Ambient temperature range, -40 to 85 °C

  • 8 kV ESD protection

  • Reverse current protection


Fault blanking


Enhanced power switches


Single Channel


Dual Channel


【產品應用】

Applications:



  • Set-top-box

  • PC/NB USB current limited

  • Industrial PC

  • TV USB port


Mobile USB products

【文字介紹】

The STMPS2141, STMPS2151, STMPS2161, STMPS2171 power distribution switches are intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. These devices incorporate 90 mΩ N-channel MOSFET high-side power switches for power distribution. These switches are controlled by a logic enable input.


 


When the output load exceeds the current limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant current mode. 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 the switch off to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until a valid input voltage is present.


 


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.


 


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.