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參數(shù)資料
| 型號： | AZ494A_06 |
| 廠商： | BCD Semiconductor Manufacturing Limited |
| 英文描述： | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| 中文描述： | 脈寬調(diào)制控制電路 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 197K |
| 代理商： | AZ494A_06 |
PULSE-WIDTH-MODULATION CONTROL CIRCUITS AZ494A/C
Data Sheet
1
Apr. 2006 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
General Description
The AZ494A/C is a voltage mode pulse width modula-
tion switching regulator control circuit designed prima-
rily for power supply control.
The AZ494A/C 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 (V
REF
) is improved up to
±
1% through trimming and this provides a better output
voltage regulation. The AZ494A/C provides for push-
pull or single-ended output operation, which can be
selected through the output control.
The difference between AZ494A and AZ494C is that
they have 4.95V and 5V reference voltage respectively.
The AZ494A/C is available in standard packages of
DIP-16 and SOIC-16.
Features
·
Stable 4.95V/5V 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 AZ494A/C
SOIC-16
DIP-16
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AZ494AM | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494AM-E1 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494AMTR | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494AMTR-E1 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494AP | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
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