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參數(shù)資料
| 型號： | UC3843AL-S08-R |
| 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： | LEAD FREE, SOP-8 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 106K |
| 代理商： | UC3843AL-S08-R |
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 |
|---|---|
| UC3843AL-S08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843A-S08-R | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843A-S08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3842A-D08-T | CURRENT MODE PWM CONTROL CIRCUITS |
| UC3842G | HIGH PERFORMANCE CURRENT MODE CONTROLLER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UC3843AL-S08-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AM | 功能描述:IC REG CTRLR BST FLYBK ISO 8-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| UC3843AN | 功能描述:電流型 PWM 控制器 Current Mode RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UC3843AN | 制造商:UNITRODE 功能描述:ADVANCED PWM CONTROLLER 3843 DIP8 |
| UC3843AN | 制造商:UNITRODE 功能描述:ADVANCED PWM CONTROLLER 3843 DIP8 制造商:UNITRODE 功能描述:ADVANCED PWM CONTROLLER, 3843, DIP8 制造商:UNITRODE 功能描述:ADVANCED PWM CONTROLLER, 3843, DIP8; Input Voltage:15V; Output Voltage:5V; Output Current:200mA; Supply Voltage Min:12V; Supply Voltage Max:25V; Digital IC Case Style:DIP; No. of Pins:8; Frequency:500kHz; Operating Temperature |
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