LT1910 Protected High Side MOSFET Driver FEATURES DESCRIPTION n 8V to 48V Power Supply Range The LT 1910 is a high side gate driver that allows the use of n Protected from 15V to 60V Supply Transients low cost N-channel power MOSFETs for high side switching n Short-Circuit Protected applications. It contains a completely self-contained charge n Automatic Restart Timer pump to fully enhance an N-channel MOSFET switch with n Open-Collector Fault Flag no external components. n Fully Enhances N-Channel MOSFET Switches When the internal drain comparator senses that the switch n Programmable Current Limit, Delay Time and current has exceeded the preset level, the switch is turned Autorestart Period off and a fault flag is asserted. The switch remains off for n Voltage Limited Gate Drive a period of time set by an external timing capacitor and n Defaults to Off State with Open Input then automatically attempts to restart. If the fault still n Available in SO-8 Package exists, this cycle repeats until the fault is removed, thus protecting the MOSFET. The fault flag becomes inactive once the switch restarts successfully. APPLICATIONS The LT1910 has been specifically designed for harsh n Industrial Control operating environments such as industrial, avionics and n Avionics Systems automotive applications where poor supply regulation and/ n Automotive Switches or transients may be present. The device will not sustain n Stepper Motor and DC Motor Control damage from supply transients of 15V to 60V. n Electronic Circuit Breaker The LT1910 is available in the SO-8 package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Fault Protected High Side Switch Switch Drop vs Load Current 5V 24V 0.50 0.45 5.1k LT1910 + 0.40 0.01 FAULT OUTPUT FAULT V 0.35 IN SENSE OFF ON 0.30 IRFZ34 TIMER GATE GND 0.25 + 10F 0.20 0.1F LOAD 50V 0.15 0.10 1910 TA01 0.05 0 0 1 2 3 4 5 LOAD CURRENT (A) 1910 TA02 1910fc 1 For more information www.linear.com/LT1910 TOTAL DROP (V)LT1910 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW Supply Voltage (Pin 8) ............................... 15V to 60V + Input Voltage (Pin 4) ..................... (GND 0.3V) to 15V GND 1 8 V GATE Voltage (Pin 5) ................................................ 75V TIMER 2 7 NC + SENSE Voltage (Pin 6) ........................................ V 5V FAULT SENSE 3 6 FAULT Voltage (Pin 3) .............................................. 36V IN GATE 4 5 Current (Pins 1, 2, 4, 5, 6, 8) ................................ 40mA S8 PACKAGE 8-LEAD PLASTIC SO Operating Temperature Range (Note 2) T = 125C, = 150C/W JMAX JA LT1910E ............................................... 40C to 85C LT1910I .............................................. 40C to 125C Junction Temperature Range ................ 40C to 125C Storage Temperature Range ................... 65C to 150C Lead Temperature (Soldering, 10 sec) .................. 300C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1910ES8 PBF LT1910ES8 TRPBF 1910 8-Lead Plastic SO 40C to 85C LT1910IS8 PBF LT1910IS8 TRPBF 1910 8-Lead Plastic SO 40C to 125C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1910ES8 LT1910ES8 TR 1910 8-Lead Plastic SO 40C to 85C LT1910IS8 LT1910IS8 TR 1910 8-Lead Plastic SO 40C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. For more information on lead free part marking, go to: