LTC4444-5 High Voltage Synchronous N-Channel MOSFET Driver FEATURES DESCRIPTION n Bootstrap Supply Voltage to 114V The LTC 4444-5 is a high frequency high voltage gate n Wide V Voltage: 4.5V to 13.5V driver that drives two N-channel MOSFETs in a synchro- CC n Adaptive Shoot-Through Protection nous DC/DC converter with supply voltages up to 100V. n This powerful driver reduces switching losses in MOSFETs 1.4A Peak Top Gate Pull-Up Current n with high gate capacitance. 1.75A Peak Bottom Gate Pull-Up Current n 1.5 Top Gate Driver Pull-Down The LTC4444-5 is configured for two supply-indepen- n 0.75 Bottom Gate Driver Pull-Down dent inputs. The high side input logic signal is internally n 5ns Top Gate Fall Time Driving 1nF Load level-shifted to the bootstrapped supply, which may func- n 8ns Top Gate Rise Time Driving 1nF Load tion at up to 114V above ground. n 3ns Bottom Gate Fall Time Driving 1nF Load The LTC4444-5 contains undervoltage lockout circuits that n 6ns Bottom Gate Rise Time Driving 1nF Load disable the external MOSFETs when activated. Adaptive n Drives Both High and Low Side N-Channel MOSFETs shoot-through protection prevents both MOSFETs from n Undervoltage Lockout conducting simultaneously. n Thermally Enhanced 8-Pin MSOP Package For a similar driver in this product family, please refer to the chart below. APPLICATIONS PARAMETER LTC4444-5 LTC4446 LTC4444 n Distributed Power Architectures Shoot-Through Protection Yes No Yes n Automotive Power Supplies Absolute Max TS 100V 100V 100V n High Density Power Modules MOSFET Gate Drive 4.5V to 13.5V 7.2V to 13.5V 7.2V to 13.5V + n Telecommunication Systems V UV 4V 6.6V 6.6V CC V UV 3.5V 6.15V 6.15V L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and CC No R is a trademark of Linear Technology Corporation. All other trademarks are the SENSE property of their respective owners. Protected by U.S. Patents, including 6677210. TYPICAL APPLICATION High Input Voltage Buck Converter LTC4444-5 Driving a 1000pF Capacitive Load BINP V CC V IN 5V/DIV 4.5V TO 13.5V 100V BG BOOST 5V/DIV V TG CC LTC4444-5 TINP PWM1 V TINP TS 5V/DIV OUT (FROM CONTROLLER IC) PWM2 TG-TS BINP BG (FROM CONTROLLER IC) 5V/DIV GND 44445 TA01a 44445 TA01b 20ns/DIV 44445fc 1LTC4444-5 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) Supply Voltage TOP VIEW V ......................................................... 0.3V to 14V TINP 1 8 TS CC 9 BINP 2 7 TG BOOST TS ........................................... 0.3V to 14V GND 6 BOOST V 3 CC BG 4 5 NC TINP Voltage ................................................. 2V to 14V MS8E PACKAGE BINP Voltage ................................................. 2V to 14V 8-LEAD PLASTIC MSOP BOOST Voltage .........................................0.3V to 114V T = 125C, = 40C/W, = 10C/W (NOTE 4) JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB TS Voltage .................................................. 5V to 100V Operating Junction Temperature Range (Notes 2, 3) ........................................ 55C to 150C 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 LTC4444EMS8E-5 PBF LTC4444EMS8E-5 TRPBF LTDPY 8-Lead Plastic MSOP 40C to 125C LTC4444IMS8E-5 PBF LTC4444IMS8E-5 TRPBF LTDPY 8-Lead Plastic MSOP 40C to 125C LTC4444HMS8E-5 PBF LTC4444HMS8E-5 TRPBF LTDPY 8-Lead Plastic MSOP 40C to 150C LTC4444MPMS8E-5 PBF LTC4444MPMS8E-5 TRPBF LTFDF 8-Lead Plastic MSOP 55C to 150C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: