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參數(shù)資料
| 型號： | UC3842A-S08-T |
| 廠商： | UNISONIC TECHNOLOGIES CO LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | CURRENT MODE PWM CONTROL CIRCUITS |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大小： | 106K |
| 代理商： | UC3842A-S08-T |
UC3842A/3843A
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 9
QW-R103-002,D
S HUT DOWN T ECHNIQUES
8
3
3
5
1k
1
Shutdown
To current
Sense resistor
Shutdown
Shutdown UTC
UC3842A
can be accomplished by two methods; either raise pin 3 above 1V or pull Pin 1 below a
voltage two diode drops above ground. Either method caused the output of PWM 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 shut –down may be
accomplished by adding an SCR which be reset by cycling V
CC
below the lower UVLO threshold. At this point the
reference turns off allowing the SCR to reset
.
相關PDF資料 |
PDF描述 |
|---|---|
| UC3843A-D08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AL-D08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AL-S08-R | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AL-S08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843A-S08-R | CURRENT MODE PWM CONTROL CIRCUITS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UC3842AY | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| UC3842B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
| UC3842B/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:High Performance Current Mode Controller |
| UC3842B_07 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Performance Current Mode Controllers |
| UC3842B_08 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:HIGH PERFORMANCE CURRENT MODE CONTROLLERS |
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