LTC1153CS8#PBF

LTC1153 is an electronic circuit breaker drives a low cost 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 shutdown 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. It is used in application such as power bus circuit breaker, SCSI termination power protection, regulator over-current protection, battery short-circuit protection, DC motor stall protection, sensitive system power interrupt etc.

• Supply voltage range is 4.5V to 18V
• Minimum trip delay is 25µs typical
• Programmable auto-reset time is 1ms to <gt/>10 sec
• Drives low RDS(ON) N-channel MOSFETs
• Status output indicates fault condition
• Thermal trip with PTC thermistor
• No external charge pump capacitors
• Quiescent current off is 8µA typical at (VS = 5V, VIN = 0V)
• Operating temperature is 0°C to 70°C
• Package style is 8-lead plastic SOIC

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party