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参数资料
| 型号： | TL494BD |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM VM 16-SOIC |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 48 |
| 系列： | SWITCHMODE™ |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 200kHz |
| 占空比： | 50% |
| 电源电压： | 7 V ~ 40 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
TL494, NCV494
SWITCHMODE ? Pulse Width
Modulation Control Circuit
The TL494 is a fixed frequency, pulse width modulation control
circuit designed primarily for SWITCHMODE power supply control.
Features
TL494xDG
AWLYWW
?
?
?
?
?
?
?
?
?
Complete Pulse Width Modulation Control Circuitry
On?Chip Oscillator with Master or Slave Operation
On?Chip Error Amplifiers
On?Chip 5.0 V Reference
Adjustable Deadtime Control
Uncommitted Output Transistors Rated to 500 mA Source or Sink
Output Control for Push?Pull or Single?Ended Operation
Undervoltage Lockout
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
http://onsemi.com
MARKING
DIAGRAMS
16
SOIC?16
D SUFFIX
CASE 751B
1
16
?
Pb?Free Packages are Available*
PDIP?16
N SUFFIX
CASE 648
*
TL494xN
AWLYYWWG
1
MAXIMUM RATINGS (Full operating ambient temperature range applies,
unless otherwise noted.)
x
= B, C or I
Rating
Power Supply Voltage
Collector Output Voltage
Symbol
V CC
V C1 ,
Value
42
42
Unit
V
V
A
WL
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
V C2
G
= Pb?Free Package
Collector Output Current
(Each transistor) (Note 1)
Amplifier Input Voltage Range
Power Dissipation @ T A ≤ 45 ° C
I C1 , I C2
V IR
P D
500
?0.3 to +42
1000
mA
V
mW
*This marking diagram also applies to NCV494.
PIN CONNECTIONS
Input 1
Input 2
Comp Input 3
Control 4
16 Input
15 Input
13 Contro
Thermal Resistance, Junction?to?Ambient
Operating Junction Temperature
Storage Temperature Range
Operating Ambient Temperature Range
TL494B
TL494C
TL494I
NCV494B
Derating Ambient Temperature
R q JA
T J
T stg
T A
T A
80
125
?55 to +125
?40 to +125
0 to +70
?40 to +85
?40 to +125
45
° C/W
° C
° C
° C
° C
Noninv
Inv
Compen/PWN
Deadtime
C T 5
R T 6
+
Error 1
Amp
?
≈ 0.1 V
Oscillator
+
2 Error
Amp
?
V CC
5.0 V
REF
Noninv
Inv
14 V ref
Output
l
12 V CC
11 C2
Maximum ratings are those values beyond which device damage can occur.
Q2
Maximum ratings applied to the device are individual stress limit values (not
Ground 7
10 E2
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
C1 8
Q1
9 E1
reliability may be affected.
1. Maximum thermal limits must be observed.
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
*For additional information on our Pb?Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
? Semiconductor Components Industries, LLC, 2005
June, 2005 ? Rev. 6
1
Publication Order Number:
TL494/D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TL494BDG | 功能描述:电压模式 PWM 控制器 40kHz 200mA PWM w/48% Duty Cycle Max RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TL494BDR2 | 功能描述:电压模式 PWM 控制器 40kHz 200mA PWM RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TL494BDR2G | 功能描述:电压模式 PWM 控制器 40kHz 200mA PWM w/48% Duty Cycle Max RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TL494CD | 功能描述:电压模式 PWM 控制器 PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| TL494CDB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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