The LTC1153 is an auto-reset electronic circuit breaker with programmable trip delay, trip current and auto-reset time, which can drive low RDS(ON) N-channel MOSFETs and achieve thermal action via PTC thermistor.
The LTC1153 is an electronic circuit breaker that drives a low‑cost N‑channel MOSFET to protect sensitive loads from over‑current conditions. It offers programmable trip delay, trip current, and auto‑reset periods, and includes status output and thermal shutdown features.
The document details electrical characteristics, absolute maximum ratings, typical performance curves, pin descriptions, package options, and application guidelines for both resistive and inductive loads.
| Supply Voltage Range | 4.5 V to 18 V |
|---|---|
| Programmable Trip Delay | 15 µs to >100 ms |
| Programmable Trip Current | 1 mA to >20 A |
| Standby Supply Current | 8 µA |
| Package Type | 8‑Lead Plastic SOIC |
The LTC1153 allows a programmable trip delay from 15 µs up to more than 100 ms.
The status pin is an open‑drain output that is driven low whenever the breaker is tripped.
The standby supply current is 8 µA.