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TL1454A Datasheet Dual-Channel PWM Controller

Manufacturer: Texas Instruments

Overview: TL1454A, TL1454AY DUALĆCHANNEL PULSEĆWIDTHĆMODULATION (PWM) CONTROL CIRCUIT SLVS423 A− MAY 2002 − REVISED SEPTEMBER 2002 D Two Complete PWM Control Circuits D Outputs Drive MOSFETs Directly D Oscillator Frequency . . . 50 kHz to 2 MHz D 3.6-V to 20-V Supply-Voltage Range D Low Supply Current . . . 3.5 mA Typ D Adjustable Dead-Time Control, 0% to 100% D 1.

General Description

The TL1454A is a dual-channel pulse-width-modulation (PWM) control circuit, primarily intended for low-power, dc/dc converters.

Applications include LCD displays, backlight inverters, notebook computers, and other products requiring small, high-frequency, dc/dc converters.

D, N OR PW PACKAGE (TOP VIEW) CT RT DTC1 IN1 + IN1 − COMP1 GND OUT1 1 2 3 4 5 6 7 8 16 REF 15 SCP 14 DTC2 13 IN2 + 12 IN2 − 11 COMP2 10 VCC 9 OUT2 Each PWM channel has its own error amplifier, PWM comparator, dead-time control comparator, and MOSFET driver.