DESCRIPTION
T he TD34063 Series is a monolithic control circuit containing the primary functions required for DC to DC converters. T hes, e devices consist of an internal temperature compensated reference, comparator controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. T his series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external components. FEATURES
*Operation from 3.0V to 40V. *Short circuit current limiting. *Low standby current. *Output switch current of 1.5A without external transistors. *Frequency of operation from 100Hz to 100kHz. *Step-up, step-down or inverting switch regulators. BLOCK DIAGRAM SWITCH COLLECTOR 1 SWITCH EMITTER 2 TIMING CAPACITOR 3 E T2 T1 A S Q R C Is CT OSCILLATOR GND 4 1.25Vref COMP. D B 8 DRIVE COLLECTOR 7 Ipeak SENSE 6 Vcc 5 COMPARATOR INVERTING INPUT SOP-8 DIP-8 PIN CONFIGURATION Switch Collector Switch Emitter...
