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參數(shù)資料
| 型號(hào)： | NTE7117 |
| 廠商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Switched-Mode Power Supply Controller |
| 中文描述： | 集成電路開關(guān)模式電源控制器 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 22K |
| 代理商： | NTE7117 |
NTE7117
Integrated Circuit
Switched–Mode Power Supply Controller
Description:
The NTE7117 is a control circuit in an 8–Lead DIP type package designed for use in switched–mode
power supplies. It contains an internal temperature–compensated supply, PWM, sawtooth oscillator,
over–current sense latch, and output stage. This device is intended for low cost SMPS applications
where extensive housekeeping functions are not required.
Features:
Pulse Width Modulator
Current Limiting (Cycle–by–Cycle)
Sawtooth Generator
Stabilized Power Supply
Double–Pulse Protection
Internal Temperature–Compensated Reference
Applications:
Switch–Mode Power Supplies
DC Motor Controller Inverter
DC/DC Converter
Absolute Maximum Ratings:
Supply Voltage, V
CC
Output Current, I
OUT
Output Duty Cycle
Maximum Total Power Dissipation, P
D
Operating Temperature Range, T
A
18V
40mA
98%
750mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0
°
to +70
°
C
DC Electrical Characteristics:
(V
CC
= 12V, T
A
= +25
°
C unless otherwise specified)
Parameter
Symbol
Reference Section
Internal Reference Voltage
V
REF
T
A
= +25
°
C
T
A
= 0
°
to +70
°
C
Internal Zener Reference
V
Z
I
L
= 7mA
Temperature Coefficient of V
REF
Temperature Coefficient of V
Z
Oscillator Section
Frequency Range
f
T
A
= 0
°
to +70
°
C
Initial Accuracy
R
T
and C
T
Constant
Duty Cycle Range
f
o
= 20kHz
Test Conditions
Min
Typ
Max
Unit
3.69
3.66
7.8
–
–
3.75
–
8.2
±
100
±
100
3.84
3.87
8.8
–
–
V
V
V
ppm/
°
C
ppm/
°
C
50
–
0
–
5
–
100k
–
98
Hz
%
%
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