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參數資料
| 型號： | S3882 |
| 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： | 5/8頁 |
| 文件大小： | 327K |
| 代理商： | S3882 |
KSI-8008-001
5
A normal operating conditions occurs when the power supply output is overloaded or if output voltage to 1.0V
Therefore the maximum peak switch current is lpk(max)=1.0V/Rs, and under the normal operating conditions the
peak inductor current controlled by the voltage at pin1.
5. Shutdown Techniques
4.7K
Shutdown of the S3882 can be
V
REF
accomplished by two methods;
3
I
4.7K
5.00
either raise pin3 above 1V or pull
pin1 below a voltage two diodes
DOW N
drops above ground. Either causes
the output of the PWM method
comparator to be high (refer to
block diagram). The PWM latch is reset dominant so that the output will remain low until the next clock cycle after
the shutdown condition at pins 1 and/or 3 is removed. In one example, an externally latched shutdown may be
accomplished by adding an SCR which turn off, allowing the SCR to reset.
Ipeak =
R(V pin1 - 2V be)
3R x Rs
COMP
AMP
ERROR
1
3
5
COMPARATOR
GND
SENSE
Rs
R
C
2R
R
IV
CURRENT
SENSE
CURRENT
Iβ
S3882
4. Current Sense Circuit
8
SENSE
1
COMP
SHUT
SHUT
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相關代理商/技術參數 |
參數描述 |
|---|---|
| S3882P | 制造商:AUK 制造商全稱:AUK corp 功能描述:Current Mode PWM Controller |
| S3883 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:Si PIN photodiode Large area, high-speed Si PIN photodiodes |
| S3883-32.768K | 制造商:Pletronics 功能描述:SMD Crystal Oscillator 0.032768MHz 1.8V/2.5V/3.3V 4-Pin CLCC |
| S3883-32.768K-SMD | 制造商:Pletronics 功能描述:CMOS S PKG OSC (S3884)__Contact Local Pletronics Rep |
| S3884 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:Si APD Low bias operation, for 800 nm band |
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