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AZ494AP-E1 参数 Datasheet PDF下载

AZ494AP-E1图片预览
型号: AZ494AP-E1
PDF下载: 下载PDF文件 查看货源
内容描述: 脉宽调制控制电路 [PULSE-WIDTH-MODULATION CONTROL CIRCUITS]
分类和应用:
文件页数/大小: 2 页 / 52 K
品牌: BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
 浏览型号AZ494AP-E1的Datasheet PDF文件第2页  
Product Brief
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Description
The AZ494A/C is a voltage mode pulse width modulation
switching regulator control circuit designed primarily for
power supply control. The AZ494A/C 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% through trimming and this provides
a better output voltage regulation. The AZ494A/C pro-
vides for push-pull or single-ended output operation,
which can be selected through the output control.
AZ494A/C
Parametric Table
AZ494A
Reference Voltage (V)
AZ494C
Reference Voltage Tolerance
Frequency Change with Temperature (Max)
Open Loop Voltage Gain (db)
Unity-Gain Bandwidth (KHz)
Output Saturation Voltage (Common Emitter)
(V)
Rise Time (ns)
5
1%
1%
95
650
1.1
100
25
7 to 36
DIP-16
Package
SOIC-16
4.95
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 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
Fall Time (ns)
Supply Voltage (V)
Benefits
·
·
Higher Power Glitch Rejection
Very competitive price
Applications
·
·
·
SMPS
Back Light Inverter
Charger
Additional Available Materials
·
·
·
·
·
·
Samples
Data Sheet
Reliability Report
ESD Report
Application Notes
Demo Board
Apr. 2006
BCD Semiconductor Manufacturing Limited