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參數(shù)資料
| 型號： | S3842 |
| 廠商： | AUK Corp |
| 英文描述： | Current Mode PWM Controller |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 351K |
| 代理商： | S3842 |
KSI-8006-003
2
S3842
Absolute Maximum Ratings
Ta=25
°
C
Characteristic
Symbol
Supply voltage
Current Sense and V
fb
Input
Total Power Supply and Zener Current
I
CC
+ I
Z
Output Sink of Source Current
Error AMP Output Sink Current
Operating Ambient Temperature
Storage Temperature Range
Power Dissipation at T
a
≤
50
°
C
Ratings
30
-0.3 to V
cc
30
1
10
0 to 70
-65 to 150
1
Unit
V
V
mA
A
mA
°
C
°
C
W
V
cc
V
IN
I
o
I
eo
T
a
T
stg
P
d
note) All voltages are with respect to PIN5, and current are positive into the specified pin.
PIN Description
PIN NO
Function
1
Compensation Error amplifier output and is made available for loop compensation.
Voltage
feedback
power supply output through a resistor driver.
A voltage proportional to inductor current is connected to this input.
The PWM uses this information to terminate the output.
The oscillator frequency and maximum output duty cycle are
programmed by connecting resistor R
t
to Vref and capacitor C
t
to
ground.
5
Ground
This pin is the combined control circuitry and power ground.
This output directly drives the gate of a power MOSFET. Peak current
up to 1.0A are sourced and sinked by this pin.
7
V
CC
This pin is the positive supply of the control IC.
This is the reference output. it provides charging current for capacitor
C
t
through resistor R
t
.
Block Diagram
Description
2
Inverting input of error amplifier, normally connected to the switching
3
Current sense
4
R
t
/C
t
6
Output
8
Vref
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PDF描述 |
|---|---|
| S3843P | Current Mode PWM Controller |
| S3843 | Current Mode PWM Controller |
| S3882P | Current Mode PWM Controller |
| S3882 | Current Mode PWM Controller |
| S3884 | Si APD Low bias operation, for 800 nm band |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S3842P | 制造商:AUK 制造商全稱:AUK corp 功能描述:Current Mode PWM Controller |
| S3843 | 制造商:AUK 制造商全稱:AUK corp 功能描述:Current Mode PWM Controller |
| S3843P | 制造商:AUK 制造商全稱:AUK corp 功能描述:Current Mode PWM Controller |
| S3850G2N | 制造商:TYAN 功能描述:ATX, PCI, GFX, (2) LAN - Bulk |
| S3850G2NR | 制造商:TYAN 功能描述:ATX, PCI, GFX, (2) LAN, RAID - Bulk |
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