AZ494B - BCD Semiconductor

AZ494B PULSE-WIDTH-MODULATION CONTROLLER

The AZ494B/D is a voltage mode pulse width modulation switching regulator control circuit designed primarily for power supply control. The AZ494B/D consists of a reference voltage circuit, two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and an output control circuit. The AZ494B.

Features

·
·
·
·
·
· Stable 4.95V for AZ494B or 5V for AZ494D Reference Voltage Trimmed to ±1.5% Accuracy Uncommitted Output TR for 200mA Sink or Source Current Single-End or Push-Pull Operation Selected by Output Control Internal Circuitry Prohibits Double Pulse at Either Output Complete PWM Control Circuit with Variable Duty Cycle On-Chip Oscillator with Master or Slave Operation Applications
·
·
· SMPS Back Light Inverter Charger www.DataSheet4U.com SOIC-16 DIP-16 Figure 1. Package Types of AZ494B/D Jun. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 1 Data Sheet PULSE-WIDTH-MODULAT.