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参数资料
| 型号： | NTE1672 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Power Supply Control Circuit |
| 中文描述： | 集成电路电源控制电路 |
| 文件页数： | 1/4页 |
| 文件大小： | 29K |
| 代理商： | NTE1672 |
NTE1672
Integrated Circuit
Power Supply Control Circuit
Description:
The NTE1672 is a control circuit in a 16–Lead DIP type package designed for use in switched mode
power supplies. This single monolithic chip incorporates all the control and housekeeping (protection)
functions required in switched mode power supplies, including an internal temperature compensated
reference source, internal Zener references, sawtooth generator, pulse width modulator, output
stage, and various protection circuits.
Features:
Stabilized Power Supply
Temperature Compensated Reference Source
Sawtooth Generator
Pulse Width Modulator
Remote ON/OFF Switching
Current Limiting
Low Supply Voltage Protection
Loop Fault Protection
Demagnetization/Overvoltage Protection
Maximum Duty Cycle Clamp
Feed Forward Control
External Synchronization
Absolute Maximum Ratings:
Supply
Voltage Forced Mode
Current Fed Mode
Output Transistor (at 20 – 30V Max)
Output Current
Collector Voltage (Pin15)
Maximum Emitter Voltage (Pin14)
Operating Ambient Temperature Range
Storage Temperature Range
+18V
30mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
CC
+1.4V
+5V
0
°
to +70
°
C
–65
°
to +150
°
C
DC Electrical Characteristics:
(T
A
= +25
°
C, V
CC
= 12V unless otherwise specified)
Parameter
Test Conditions
Min
Typ
Max
Unit
Reference Sections
Internal Reference Voltage (V
ref
)
T
A
= +25
°
C
T
A
= 0
°
to +70
°
C
3.57
3.72
3.95
V
3.53
–
4.00
V
Temperature Coefficient of V
ref
Internal Zener Reference (V
Z
)
Temperature Coefficient of V
Z
–
–100
–
ppm/
°
C
V
ppm/
°
C
I
L
= –7mA
7.8
8.4
8.8
–
200
–
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