LTC4440 High Speed, High Voltage High Side Gate Driver FEATURES DESCRIPTION n Wide Operating V Range: Up to 80V The LTC 4440 is a high frequency high side N-channel IN n Rugged Architecture Tolerant of 100V V MOSFET gate driver that is designed to operate in ap- IN Transients plications with V voltages up to 80V. The LTC4440 can IN n Powerful 1.5 Driver Pull-Down also withstand and continue to function during 100V V IN n Powerful 2.4A Peak Current Driver Pull-Up transients. The powerful driver capability reduces switch- n 7ns Fall Time Driving 1000pF Load ing losses in MOSFETs with high gate capacitances. The n 10ns Rise Time Driving 1000pF Load LTC4440s pull-up has a peak output current of 2.4A and n Drives Standard Threshold MOSFETs its pull-down has an output impedance of 1.5. n TTL/CMOS Compatible Inputs with Hysteresis The LTC4440 features supply independent TTL/CMOS n Input Thresholds are Independent of Supply compatible input thresholds with 350mV of hysteresis. n Undervoltage Lockout The input logic signal is internally level-shifted to the n Low Profile (1mm) SOT-23 (ThinSOT) and bootstrapped supply, which may function at up to 115V Thermally Enhanced 8-Pin MSOP Packages above ground. APPLICATIONS The LTC4440 contains both high side and low side under- voltage lockout circuits that disable the external MOSFET n Telecommunications Power Systems when activated. n Distributed Power Architectures n Server Power Supplies The LTC4440 is available in the low profile (1mm) SOT-23 n High Density Power Modules and thermally enhanced 8-lead MSOP packages. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PARAMETER LTC4440 LTC4440-5 LTC4440A-5 ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6677210. Max Operating TS 80V 60V 80V Absolute Max TS 100V 80V 100V MOSFET Gate Drive 8V to 15V 4V to 15V 4V to 15V + V UV 6.3V 3.2V 3.2V CC V UV 6.0V 3.04V 3.04V CC TYPICAL APPLICATION Synchronous Phase-Modulated Full-Bridge Converter V IN 36V TO 72V 100V PEAK TRANSIENT LTC4440 Driving a 1000pF (ABS MAX) V CC Capacitive Load 8V TO 15V LTC4440 V BOOST CC INPUT INP TG (INP) 2V/DIV GND TS OUTPUT LTC4440 (TG TS) 5V/DIV V V BOOST CC CC LTC3722-1 INP TG GND TS 4440 TA01 4440 F02 10ns/DIV 4440fb 1 For more information www.linear.com/LTC4440LTC4440 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage Peak Output Current < 1s (TG) ................................. 4A V ........................................................ 0.3V to 15V Driver Output TG (with Respect to TS) ....... 0.3V to 15V CC BOOST TS ........................................... 0.3V to 15V Operating Temperature Range (Note 2) INP Voltage ................................................ 0.3V to 15V LTC4440E ...........................................40C to 85C BOOST Voltage (Continuous) ..................... 0.3V to 95V LTC4440I .......................................... 40C to 125C BOOST Voltage (100ms) ...........................0.3V to 115V Junction Temperature (Note 3) ............................ 125C TS Voltage (Continuous) ............................... 5V to 80V Storage Temperature Range .................. 65C to 150C TS Voltage (100ms) .................................... 5V to 100V Lead Temperature (Soldering, 10 sec) ...................300C PIN CONFIGURATION TOP VIEW TOP VIEW INP 1 8 TS V 1 6 BOOST CC GND 2 7 TG 9 V 3 6 BOOST GND 2 5 TG CC 5 NC GND 4 INP 3 4 TS MS8E PACKAGE 8-LEAD PLASTIC MSOP S6 PACKAGE 6-LEAD PLASTIC SOT-23 T = 125C, = 40C/W (NOTE 4) JMAX JA EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB T = 125C, = 230C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4440EMS8E PBF LTC4440EMS8E TRPBF LTF9 8-Lead Plastic MSOP 40C to 85C LTC4440IMS8E PBF LTC4440IMS8E TRPBF LTF9 8-Lead Plastic MSOP 40C to 125C LTC4440ES6 PBF LTC4440ES6 TRPBF LTZY 6-Lead Plastic SOT-23 40C to 85C LTC4440IS6 PBF LTC4440IS6 TRPBF LTZY 6-Lead Plastic SOT-23 40C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: