LTC4444 High Voltage Synchronous N-Channel MOSFET Driver FEATURES DESCRIPTION n AEC-Q100 Qualified for Automotive Applications The LTC 4444 is a high frequency high voltage gate driver n Bootstrap Supply Voltage to 114V that drives two N-channel MOSFETs in a synchronous n Wide V Voltage: 7.2V to 13.5V DC/DC converter with supply voltages up to 100V. This CC n Adaptive Shoot-Through Protection powerful driver reduces switching losses in MOSFETs n 2.5A Peak TG Pull-Up Current with high gate capacitance. n 3A Peak BG Pull-Up Current The LTC4444 is configured for two supply-independent n 1.2 TG Driver Pull-Down inputs. The high side input logic signal is internally n 0.55 BG Driver Pull-Down level-shifted to the bootstrapped supply, which may func- n 5ns TG Fall Time Driving 1nF Load tion at up to 114V above ground. n 8ns TG Rise Time Driving 1nF Load n The LTC4444 contains undervoltage lockout circuits that 3ns BG Fall Time Driving 1nF Load n disable the external MOSFETs when activated. Adaptive 6ns BG Rise Time Driving 1nF Load n shoot-through protection prevents both MOSFETs from Drives Both High and Low Side N-Channel MOSFETs n conducting simultaneously. Undervoltage Lockout n Thermally Enhanced 8-Lead MSOP Package For a similar driver in this product family, please refer to the chart below. APPLICATIONS PARAMETER LTC4444 LTC4446 LTC4444-5 n Shoot-Through Protection Yes No Yes Distributed Power Architectures Absolute Max TS 100V 100V 100V n Automotive Power Supplies MOSFET Gate Drive 7.2V to 13.5V 7.2V to 13.5V 4.5V to 13.5V n High Density Power Modules + V UV 6.6V 6.6V 4V CC n Telecommunications V UV 6.15V 6.15V 3.55V CC All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 6677210. TYPICAL APPLICATION High Input Voltage Buck Converter LTC4444 Driving a 1000pF Capacitive Load V IN V BINP CC 100V 7.2V TO 13.5V 5V/DIV (ABS MAX) BG BOOST 10V/DIV V TG CC LTC4444 PWM1 TINP V TINP TS OUT (FROM CONTROLLER IC) 5V/DIV PWM2 BINP BG (FROM CONTROLLER IC) TG-TS GND 10V/DIV 4444 TA01a 20ns/DIV 4444 TA01b Rev. C 1 Document Feedback For more information www.analog.comLTC4444 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) Supply Voltage V ......................................................... 0.3V to 14V CC TOP VIEW BOOST TS ........................................... 0.3V to 14V TINP 1 8 TS TINP Voltage ..................................................2V to 14V BINP 2 9 7 TG GND V 3 6 BOOST CC BINP Voltage ..................................................2V to 14V BG 4 5 NC BOOST Voltage .........................................0.3V to 114V MS8E PACKAGE 8-LEAD PLASTIC MSOP TS Voltage .................................................. 5V to 100V Operating Junction Temperature Range T = 125C, = 40C/W, = 10C/W (NOTE 4) JMAX JA JC EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB (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 PBF LTC4444EMS8E TRPBF LTDBF 8-Lead Plastic MSOP 40C to 125C LTC4444IMS8E PBF LTC4444IMS8E TRPBF LTDBF 8-Lead Plastic MSOP 40C to 125C LTC4444HMS8E PBF LTC4444HMS8E TRPBF LTDBF 8-Lead Plastic MSOP 40C to 150C LTC4444MPMS8E PBF LTC4444MPMS8E TRPBF LTDBF 8-Lead Plastic MSOP 55C to 150C AUTOMOTIVE PRODUCTS** LTC4444EMS8E WPBF LTC4444EMS8E WTRPBF LTDBF 8-Lead Plastic MSOP 40C to 125C LTC4444IMS8E WPBF LTC4444IMS8E WTRPBF LTDBF 8-Lead Plastic MSOP 40C to 125C LTC4444HMS8E WPBF LTC4444HMS8E WTRPBF LTDBF 8-Lead Plastic MSOP 40C to 150C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at T = 25C (Note 2). V = V = 12V, V = GND = 0V, unless otherwise noted. A CC BOOST TS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Gate Driver Supply, V CC V Operating Voltage 7.2 13.5 V CC I DC Supply Current TINP = BINP = 0V 350 550 A VCC l UVLO Undervoltage Lockout Threshold V Rising 6.00 6.60 7.20 V CC l V Falling 5.60 6.15 6.70 V CC Hysteresis 450 mV Bootstrapped Supply (BOOST TS) I DC Supply Current TINP = BINP = 0V 0.1 2 A BOOST Rev. C 2 For more information www.analog.com