LTC1153CS8

Hot Swap Controller 1CH 18V 8Pin SOIC N

DESCRIPTION

The LTC1153 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.

The LTC1153 is available in both 8-pin DIP and 8-pin SOIC packages.

FEATURES

■ Programmable Trip Delay: 15µs to >100ms

■ Programmable Trip Current: 1mA to >20A

■ Programmbale Auto-Reset Time: 1ms to >10 sec.

■ 4.5V to 18V Supply Range

■ Drives Low RDSON N-Channel MOSFETs

■ Status Output Indicates Fault Condition

■ Thermal Trip with PTC Thermistor

■ 8µA IQ in Standby Mode

■ No External Charge Pump Capacitors

■ Available in 8-Pin SOIC

APPLICATIONS

■ Power Bus Circuit Breaker

■ SCSI Termination Power Protection

■ Regulator Over-Current Protection

■ Battery Short-Circuit Protection

■ DC Motor Stall Protection

■ Sensitive System Power Interrupt