AZ7500BMTR-G1 查看數據表（PDF） - BCD Semiconductor

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AZ7500BMTR-G1

PULSE-WIDTH-MODULATION CONTROL CIRCUITS

BCD Semiconductor 

Data Sheet

PULSE-WIDTH-MODULATION CONTROL CIRCUITS

General Description

Features

AZ7500B

The AZ7500B is a voltage mode pulse width modula- · Stable 4.95V Reference Voltage Trimmed to

tion switching regulator control circuit designed pri-

±1.0% Accuracy

marily for power supply control.

· Uncommitted Output TR for 200mA Sink or

Source Current

The AZ7500B consists of a reference voltage circuit, · Single-End or Push-Pull Operation Selected by

two error amplifiers, an on-chip adjustable oscillator, a

Output Control

dead-time control (DTC) comparator, a pulse-steering · Internal Circuitry Prohibits Double Pulse at Either

control flip-flop, and an output control circuit. The pre-

cision of voltage reference (VREF) is improved up to ±

·

Output

Complete PWM Control Circuit with Variable

1% through trimming and this provides a better output

Duty Cycle

voltage regulation. The AZ7500B provides for push- · On-Chip Oscillator with Master or Slave Opera-

pull or single-ended output operation, which can be

tion

selected through the output control.

The difference between AZ7500B and AZ7500C is that

they have 4.95V and 5V reference voltage respectively.

The AZ7500B is available in standard packages of

DIP-16 and SOIC-16.

Applications

· SMPS

· Back Light Inverter

· Charger

SOIC-16

DIP-16

Apr. 2010 Rev. 1. 6

Figure 1. Package Types of AZ7500B

BCD Semiconductor Manufacturing Limited

1

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