LTC1153IS8#PBF, Electronic Circuit Breaker, 4.5V to 18V supply, SOIC-8
The LTC1153IS8#PBF is an auto-reset Electronic Circuit Breaker drives an N-channel MOSFET to interrupt power to a sensitive electronic load in the event of an over-current condition. The breaker remains tripped for a period of time set by an external timing capacitor and then is automatically reset. This cycle continues until the over-current condition is removed, protecting both the sensitive load and the MOSFET switch. The trip current, trip delay time and auto-reset period are programmable over a wide range to accommodate a variety of load impedances. An active high shut down input is also provided and interfaces directly to a PTC thermistor for thermal circuit breaking. An open-drain output is provided to report breaker status to the µP.
• Drives low RDS(ON) N-channel MOSFETs
• Status output indicates fault condition
• Thermal trip with PTC thermistor
• 8µA IQ in standby mode
• No external charge pump capacitors
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