TK75050 Datasheet | TOKO

SMART MOSFET DRIVER Features s 20 ns Rise and Fall Times into 1000 p F s 550 µA Standby Current Consumption s Undervoltage Lockout bined with First Pulse Wake-Up Feature - s Cycle-by-Cycle Current Limiting s Current Sense Voltage Spike Cancellation when Used with Gate Charge Recovery Circuit - s Thermal Overload Protection s TTL/CMOS patible Input APPLICATIONS s s s s Driving of Power MOSFETs and IGBTs Switch Mode Power Supplies Step Motor Drivers Solenoid Drivers DESCRIPTION The TK75050 is a non-inverting buffer to drive high power insulated gate transistors (e.g., MOSFETs and IGBTs). The output can source or sink 2 A into a 10,000 p F equivalent load. The IC Features built-in cycle-by-cycle current limiting. Its Undervoltage Lockout (UVLO) circuit is bined with a First Pulse Wake-up Feature- . The chip has thermal overload protection. Using the IC in the Gate Charge Recovery- application, the switching spike developed across the current sense resistor practically bees negligible. Due to its low standby current and first-pulse wake-up feature, the device can be used in selfbiased power supplies. The IC's high-speed cycle-bycycle current limiting capability eliminates the short circuit runaway problem which characterizes most currentcontrolled converters. The IC is well suited to provide supplementary overload protection in voltage-controlled converters, too. The TK75050 is available in the widely used 8-pin DIP package. - Toko proprietary feature: See "Application Information" section. UVLO 11/10 V STARTUP R Q EN BIAS EN INPUT OUTPUT 1.6/1.0 V OVERLOAD R Q S PGND/CS T 155/80 °C THERMAL OVERLOAD CURRENT OVERLOAD 1.0/0.9 V S PGND/CS INPUT GND GND GND GND OUTPUT BLOCK DIAGRAM ORDERING INFORMATION TK75050D Tape/Reel Code Temperature Code PACKAGE CODE D: DIP-8 EXTENDED TEMP. RANGE I: -40 TO +85 C TAPE/REEL CODE TL: Tape Left January 1999 TOKO, Inc. Page...