LTC1153IS8PBF Analog Devices

LTC1153 Auto-Reset Electronic Circuit Breaker DESCRIPTIO FEATURES n Programmable Trip Delay: 15s to >100ms The LTC1153 electronic circuit breaker drives a low cost n N-channel MOSFET to interrupt power to a sensitive Programmable Trip Current: 1mA to >20A n electronic load in the event of an over-current condition. Programmbale Auto-Reset Time: 1ms to >10 sec. n 4.5V to 18V Supply Range The breaker remains tripped for a period of time set by an n external timing capacitor and then is automatically reset. Drives Low R N-Channel MOSFETs DS(ON) n This cycle continues until the over-current condition is Status Output Indicates Fault Condition n Thermal Trip with PTC Thermistor removed, protecting both the sensitive load and the n MOSFET switch. 8A I in Standby Mode Q n No External Charge Pump Capacitors The trip current, trip delay time and auto-reset period are n Available in 8-Pin SOIC 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 APPLICATI S for thermal circuit breaking. An open-drain output is n Power Bus Circuit Breaker provided to report breaker status to the P. n SCSI Termination Power Protection The LTC1153 is available in both 8-pin DIP and 8-pin SOIC n Regulator Over-Current Protection packages. n Battery Short-Circuit Protection n DC Motor Stall Protection n Sensitive System Power Interrupt TYPICAL APPLICATI 5V/1A Electronic Circuit Breaker with 1ms Trip Delay, 200ms Auto-Reset Period and 70C Thermal Shutdown Trip Delay Time 10 ON/OFF IN VS R = 0.1 SEN C *R R = 100k D R D D SEN C T 0.01F 0.1 C = 0.01F 100k D 0.22F C DS T Z5U 1 LTC1153 TO P STATUS G IRLR024 51k 51k GND SHUTDOWN 0.1 5V SENSITIVE **70C 5V LOAD PTC 0.01 ALL COMPONENTS SHOWN ARE SURFACE MOUNT. 1 10 100 * IMS026 INTERNATIONAL MANUFACTURING SERVICE, INC. (401) 683-9700 CIRCUIT BREAKER CURRENT (A) ** RL2006-100-70-30-PT1 KEYSTONE CARBON COMPANY (814) 781-1591 LTC1153 TA02 LTC1153 TA01 1 TRIP DELAY (ms) UO UO ULTC1153 AB OLUEXAI U RAT GS S T I Current (Any Pin).................................................. 50mA Supply Voltage ........................................................ 22V Operating Temperature Input Voltage ..................... (V + 0.3V) to (GND 0.3V) S LTC1153C .............................................. 0C to 70C Timing Capacitor Voltage... (VS + 0.3V) to (GND 0.3V) Storage Temperature Range ................. 65c to 150C Gate Voltage ....................... (VS + 24V) to (GND 0.3V) Lead Temperature (Soldering, 10 sec.)................ 300C Status Output Voltage.............................................. 15V PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART TOP VIEW ORDER PART NUMBER NUMBER IN 1 V IN 1 8 V 8 S S TIMING CAP 2 7 DRAIN SENSE TIMING CAP 2 7 DRAIN SENSE LTC1153CS8 LTC1153CN8 STATUS GATE 3 6 STATUS 3 6 GATE GND 4 5 SHUTDOWN GND 4 5 SHUTDOWN N8 PACKAGE S8 PACKAGE 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC LTC1154 PO02 LTC1153 PO01 S8 PART MARKING T = 100C, = 130C/W (N8) T = 100C, = 150C/W JMAX JA JMAX JA 1153 ELECTRICAL CHARACTERISTICS V = 4.5V to 18V, T = 25C, C = 0.1F, V = 0V unless otherwise noted. S A T SD LTC1153C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Supply Voltage l 4.5 18 V S I Quiescent Current OFF V = 5V, V = 0V 8 20 A Q S IN I Quiescent Current ON V = 5V, V = 5V 85 120 A Q S IN IQ Quiescent Current ON VS =12V, VIN = 5V 180 400 A V Input High Voltage l2V INH V Input Low Voltage l 0.8 V INL IIN Input Current 0V < VIN < VS l 1 A C Input Capacitance 5pF IN V Timing Capacitor Threshold Voltage V = 5V 2.1 2.5 2.9 V CT S V = 12V 2.0 2.6 3.2 V S ICT Timing Capacitor Current VS = 12V 3.0 4.2 6.0 A V Shutdown Input High Voltage l2V SDH V Shutdown Input Low Voltage l 0.8 V SDL ISD Shutdown Input Current 0V < VIN < VS l 1 A V Drain Sense Threshold Voltage 80 100 120 mV SEN l 75 100 125 mV I Drain Sense Input Current 0V < V < V l 0.1 A SEN SEN S 2 U WU U W W W