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AZ7500EP-E1 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited

Part No. AZ7500EP-E1
Description  PULSE-WIDTH-MODULATION CONTROL CIRCUITS
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Maker  BCDSEMI [BCD Semiconductor Manufacturing Limited]
Homepage  http://www.bcdsemi.com
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PULSE-WIDTH-MODULATION CONTROL CIRCUITS
AZ7500E
Data Sheet
1
Sep. 2009 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
General Description
The AZ7500E is a voltage mode pulse width modula-
tion switching regulator control circuit designed pri-
marily for power supply control.
The AZ7500E 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 pre-
cision of voltage reference (VREF) is improved up to ±
1% through trimming and this provides a better output
voltage regulation. The AZ7500E provides for push-
pull or single-ended output operation, which can be
selected through the output control.
AZ7500E is the enhanced version of AZ7500B for it
improves REF Pin's reliability comparing with
AZ7500B.
The AZ7500E is available in standard packages of
DIP-16 and SOIC-16.
Features
·
Stable 4.95V Reference Voltage Trimmed to
±1.0% 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 Opera-
tion
Applications
·
SMPS
·
Back Light Inverter
·
Charger
Figure 1. Package Types of AZ7500E
SOIC-16
DIP-16




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