器件名称: ST2054BDR
功能描述: Current limited Power distribution switches
文件大小: 198.72KB 共13页
简 介:ST2054
Current limited Power distribution switches
Features
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80m high-side MOSFET switch 500mA continuos current per channel independent 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 20A maximum standby supply current Ambient temperature range, -40°C to 85°C ESD protection 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-16
Description
The ST2054 power distribution switches is intended for application where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80……
