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TL494_05

更新时间： 2024-01-02 13:36:25
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安森美 - ONSEMI /
页数 文件大小 规格书
14页 144K
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SWITCHMODE TM Pulse Width Modulation Control Circuit

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TL494_05 数据手册

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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  
http://onsemi.com  
• Complete Pulse Width Modulation Control Circuitry  
• On−Chip Oscillator with Master or Slave Operation  
• On−Chip Error Amplifiers  
MARKING  
DIAGRAMS  
• On−Chip 5.0 V Reference  
16  
• Adjustable Deadtime Control  
SOIC−16  
D SUFFIX  
CASE 751B  
TL494xDG  
AWLYWW  
• Uncommitted Output Transistors Rated to 500 mA Source or Sink  
• Output Control for Push−Pull or Single−Ended Operation  
• Undervoltage Lockout  
1
• NCV Prefix for Automotive and Other Applications Requiring Site  
16  
and Control Changes  
PDIP−16  
N SUFFIX  
CASE 648  
*
• Pb−Free Packages are Available*  
TL494xN  
AWLYYWWG  
1
MAXIMUM RATINGS (Full operating ambient temperature range applies,  
unless otherwise noted.)  
x
= B, C or I  
Rating  
Power Supply Voltage  
Symbol  
Value  
42  
Unit  
V
A
WL  
YY, Y  
= Assembly Location  
= Wafer Lot  
= Year  
V
CC  
Collector Output Voltage  
V
C1  
,
42  
V
WW, W = Work Week  
G
V
C2  
= Pb−Free Package  
Collector Output Current  
(Each transistor) (Note 1)  
I , I  
C1 C2  
500  
mA  
*This marking diagram also applies to NCV494.  
Amplifier Input Voltage Range  
V
−0.3 to +42  
1000  
V
mW  
°C/W  
°C  
IR  
Power Dissipation @ T ≤ 45°C  
P
D
A
PIN CONNECTIONS  
Thermal Resistance, Junction−to−Ambient  
Operating Junction Temperature  
Storage Temperature Range  
R
80  
q
JA  
J
Noninv  
Input  
Noninv  
Input  
1
2
16  
15  
+
Error  
Amp  
+
Error  
Amp  
T
125  
1
2
Inv  
Input  
Inv  
Input  
−
−
T
stg  
−55 to +125  
°C  
V
CC  
Operating Ambient Temperature Range  
T
°C  
Compen/PWN  
Comp Input  
A
5.0 V  
REF  
3
4
5
6
7
8
14  
13  
12  
V
ref  
TL494B  
TL494C  
TL494I  
−40 to +125  
0 to +70  
−40 to +85  
−40 to +125  
≈ 0.1 V  
Deadtime  
Control  
Output  
Contro  
l
NCV494B  
C
R
V
CC  
T
Oscillator  
Derating Ambient Temperature  
T
A
45  
°C  
11 C2  
10 E2  
T
Q2  
Maximum ratings are those values beyond which device damage can occur.  
Maximum ratings applied to the device are individual stress limit values (not  
normal operating conditions) and are not valid simultaneously. If these limits are  
exceeded, device functional operation is not implied, damage may occur and  
reliability may be affected.  
Ground  
C1  
Q1  
9
E1  
1. Maximum thermal limits must be observed.  
(Top View)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 4 of this data sheet.  
*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  
1
Publication Order Number:  
June, 2005 − Rev. 6  
TL494/D  
 
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