器件名称: ST2042
功能描述: Enhanced power switch
文件大小: 175.75KB 共12页
简 介:ST2042
Enhanced power switch
Features
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80m high-side MOSFET switch 500mA continuos current per channel Thermal and short-circuit protection with overcurrent logic output Operating range from 2.7V to 5.5V CMOS- and TTL-compatible enable inputs 10ms OC_N fault blanking 2.5ms typical rise time Under voltage lock out 10A maximum standby supply current Ambient temperature range, -40°C to 85°C Fault-blanking The charge pump requires no external components and allows operation from supplies as low as 2.7 V. 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. A 10ms deglitching circuit provides fault-blanking feature, preventing the OC_N pin to be asserted during hot-insertion or short spikes of overcurrent conditions. 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. These power-distribution switches are designed to current limit at 0.9 A.
SO-8
Description
The ST2042 power distribution switches is intended for application where heavy capacitive loads and short ci……
