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參數(shù)資料
| 型號(hào)： | AZ494BM |
| 廠商： | BCD SEMICONDUCTOR MANUFACTURING LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| 中文描述： | 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大小： | 59K |
| 代理商： | AZ494BM |
Description
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 refer-
ence voltage circuit, two error amplifiers, an on-chip
adjustable oscillator, a dead-time control (DTC) compara-
tor, a pulse-steering control flip-flop, and an output con-
trol circuit. The precision of voltage reference (V
REF
) is
improved up to
±
1.5% through trimming and this pro-
vides a better output voltage regulation. The AZ494B/D
provides for push-pull or single-ended output operation,
which can be selected through the output control.
Features
·
Stable 4.95V/5V Reference Voltage Trimmed to
±
1.5% Accuracy
Uncommitted Output TR for 200mA Sink or Source
Current
Single-End or Push-Pull Operation Selected by Out-
put 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
Jun. 2005
BCD Semiconductor Manufacturing Limited
Product Brief
PULSE-WIDTH-MODULATION CONTROL CIRCUITS AZ494B/D
Parametric Table
Reference Voltage (V)
AZ494B
4.95
AZ494D
5
Reference Voltage Tolerance
1.5%
Frequency Change with Temperature (Max)
1%
Open Loop Voltage Gain (db)
95
Unity-Gain Bandwidth (KHz)
800
Output Saturation Voltage (Common Emitter)
(V)
1.1
Rise Time (ns)
100
Fall Time (ns)
25
Supply Voltage (V)
7 to 36
Package
DIP-16
SOIC-16
Benefits
·
Very competitive price
Additional Available Materials
·
·
·
·
·
·
Samples
Data Sheet
Reliability Report
ESD Report
Application Notes
Demo Board
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AZ494BM-E1 | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BMTR | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BMTR-E1 | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BP | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BP-E1 | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AZ494BM-E1 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BMTR | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BMTR-E1 | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BP | 制造商:BCDSEMI 制造商全稱:BCD Semiconductor Manufacturing Limited 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| AZ494BP-E1 | 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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