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TL494D

更新时间： 2024-01-06 04:50:46
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
17页 444K
描述
PULSE-WIDTH-MODULATION CONTROL CIRCUITS

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TL494D 技术参数

生命周期：Obsolete包装说明：DIE,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：40 V
最小输入电压：7 VJESD-30 代码：X-XUUC-N16
功能数量：1端子数量：16
最高工作温度：70 °C最低工作温度：
最大输出电流：0.25 A封装主体材料：UNSPECIFIED
封装代码：DIE封装形状：UNSPECIFIED
封装形式：UNCASED CHIP认证状态：Not Qualified
最大供电电流 (Isup)：15 mA表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：300 kHz
温度等级：COMMERCIAL端子形式：NO LEAD
端子位置：UPPERBase Number Matches：1

TL494D 数据手册

 浏览型号TL494D的Datasheet PDF文件第2页浏览型号TL494D的Datasheet PDF文件第3页浏览型号TL494D的Datasheet PDF文件第4页浏览型号TL494D的Datasheet PDF文件第5页浏览型号TL494D的Datasheet PDF文件第6页浏览型号TL494D的Datasheet PDF文件第7页 
TL494  
PULSE-WIDTH-MODULATION CONTROL CIRCUITS  
www.ti.com  
SLVS074E–JANUARY 1983–REVISED FEBRUARY 2005  
FEATURES  
D, DB, N, NS, OR PW PACKAGE  
(TOP VIEW)  
•
Complete PWM Power-Control Circuitry  
•
Uncommitted Outputs for 200-mA Sink or  
Source Current  
1IN+  
1IN−  
2IN+  
2IN−  
1
2
3
4
5
6
7
8
16  
15  
•
•
•
•
•
Output Control Selects Single-Ended or  
Push-Pull Operation  
FEEDBACK  
DTC  
14 REF  
13  
12  
11  
10  
9
OUTPUT CTRL  
Internal Circuitry Prohibits Double Pulse at  
Either Output  
CT  
V
CC  
RT  
C2  
E2  
E1  
Variable Dead Time Provides Control Over  
Total Range  
GND  
C1  
Internal Regulator Provides a Stable 5-V  
Reference Supply With 5% Tolerance  
Circuit Architecture Allows Easy  
Synchronization  
DESCRIPTION  
The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control  
circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the  
power-supply control circuitry to a specific application.  
The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator,  
a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.  
The error amplifiers exhibit a common-mode voltage range from –0.3 V to VCC – 2 V. The dead-time control  
comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed  
by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common  
circuits in synchronous multiple-rail power supplies.  
The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The  
TL494 provides for push-pull or single-ended output operation, which can be selected through the output-control  
function. The architecture of this device prohibits the possibility of either output being pulsed twice during  
push-pull operation.  
The TL494C is characterized for operation from 0°C to 70°C. The TL494I is characterized for operation from  
–40°C to 85°C.  
AVAILABLE OPTIONS  
PACKAGED DEVICES(1)  
SHRINK SMALL  
OUTLINE  
(DB)  
THIN SHRINK  
SMALL OUTLINE  
(PW)  
TA  
SMALL OUTLINE  
(D)  
PLASTIC DIP  
(N)  
SMALL OUTLINE  
(NS)  
0°C to 70°C  
TL494CD  
TL494ID  
TL494CN  
TL494IN  
TL494CNS  
—
TL494CDB  
—
TL494CPW  
—
–40°C to 85°C  
(1) The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR).  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 1983–2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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