AZ494DMTR [BCDSEMI]
PULSE-WIDTH-MODULATION CONTROL CIRCUITS; 脉宽调制控制电路
| 型号： | AZ494DMTR |
| 厂家： | 
BCD SEMICONDUCTOR MANUFACTURING LIMITED |
| 描述： | PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| 文件： | 总2页 (文件大小：52K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Product Brief
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
AZ494B/D
Description
Parametric Table
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-
AZ494B
AZ494D
4.95
5
Reference Voltage (V)
Reference Voltage Tolerance
1.5%
Frequency Change with Temperature (Max)
Open Loop Voltage Gain (db)
1%
95
trol circuit. The precision of voltage reference (V ) is
REF
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.
Unity-Gain Bandwidth (KHz)
800
Output Saturation Voltage (Common Emitter)
(V)
1.1
Rise Time (ns)
Fall Time (ns)
100
25
Features
Supply Voltage (V)
7 to 36
DIP-16
SOIC-16
·
·
·
·
·
·
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
Package
Benefits
Complete PWM Control Circuit with Variable Duty
Cycle
On-Chip Oscillator With Master or Slave Operation
·
Very competitive price
Applications
Additional Available Materials
·
·
·
·
·
·
Samples
Data Sheet
Reliability Report
ESD Report
Application Notes
Demo Board
·
SMPS
Back Light Inverter
Charger
·
·
Jun. 2005
BCD Semiconductor Manufacturing Limited
Product Brief
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Pin Configuration
AZ494B/D
SOIC-16 / DIP-16
1IN +
1IN -
1
2
16
15
2IN +
2IN -
3
4
5
6
7
8
14
13
12
11
10
9
FEEDBACK
REF
OUTPUT CTRL
DTC
CT
V
CC
RT
C2
E2
E1
GND
C1
Ordering Information
Part Number
Marking ID
Temperature
Package
Range
Packing Type
Tin Lead
AZ494BM
Lead Free
Tin Lead
Lead Free
Tube
AZ494BM-E1
AZ494BM
AZ494BM-E1
Tape & Reel
Tube
AZ494BMTR
AZ494DM
AZ494BMTR-E1
AZ494DM-E1
AZ494BM
AZ494DM
AZ494DM
AZ494BM-E1
AZ494DM-E1
AZ494DM-E1
SOIC-16
-40 to 85oC
AZ494DMTR
AZ494DMTR-E1
Tape & Reel
Tube
AZ494BP
AZ494DP
AZ494BP-E1
AZ494DP-E1
AZ494BP
AZ494DP
AZ494BP-E1
AZ494DP-E1
DIP-16
Tube
Detailed information please refer to the relevant datasheet.
Sales Office:
USA
Shanghai
3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411,
U.S.A
8F, B Zone, 900 Yi Shan Road, Shanghai 200233,
China
Tel : +1-408-988 6388
Fax : +1-408-988 6386
Tel : 86-21-6495 9539
Fax : 86-21-6485 9673
Taiwan
Shenzhen
4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei,
Taiwan
Room 27B, Tower C, No. 2070, Shennanzhong Road, Shenzhen
518031, China
Tel : 886-2-2656-2808
Tel : 86-755-8368 3987
Fax : 886-2-2656-2806
Fax : 86-755-8368 3166
Jun. 2005
BCD Semiconductor Manufacturing Limited
相关型号：
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AZ494DP-E1
Switching Regulator/Controller, Voltage-mode, 0.2A, 300kHz Switching Freq-Max, PDIP16
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