LTC1153IS8#PBF - Auto-Reset Electronic Circuit Breaker

The LTC1153IS8#PBF from Linear Technology is a cutting-edge auto-reset electronic circuit breaker designed to protect electronic systems from damaging overcurrent conditions. This innovative component provides a reliable and automatic solution to interrupt the current flow when a fault is detected and then restore power without user intervention once the fault condition has been cleared.

Encased in an 8-lead SOIC package, the LTC1153IS8#PBF operates over a wide voltage range of 4.5V to 18V, making it versatile for a variety of applications, from automotive to industrial systems. Its internal charge pump is capable of driving N-channel MOSFETs, which serve as the pass transistors, ensuring a low on-resistance path for the current and minimal power dissipation during normal operation.

One of the key features of this product is its adjustable overcurrent trip threshold. Designers can set the current limit by choosing an appropriate sense resistor value, providing flexibility and precision tailored to specific circuit requirements. When an overcurrent condition occurs, the LTC1153IS8#PBF quickly turns off the MOSFET, and an onboard timer initiates the auto-reset delay. After this delay, the device will attempt to reset the circuit breaker by turning the MOSFET back on. If the fault persists, the cycle repeats, ensuring continuous protection until the overcurrent condition is resolved.

Additional features of the LTC1153IS8#PBF include a fast gate turn-off time of less than 2µs, which is crucial for rapid response to fault conditions, and an under-voltage lockout which prevents false triggering during low supply conditions. The component also has a gate drive voltage clamp that protects the MOSFET gate from overvoltage, ensuring the longevity and reliability of the system.

Overall, the LTC1153IS8#PBF is an essential component for applications requiring robust overcurrent protection with automatic reset functionality. Its combination of features, including the adjustable trip threshold, fast response time, and wide operating voltage range, make it a versatile and reliable choice for safeguarding sensitive electronic circuits.