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參數資料
| 型號： | UC3843ADX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 3/12頁 |
| 文件大小： | 104K |
| 代理商： | UC3843ADX |
Product Folder - Fairchild P/N UC3843A - SMPS Controller
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UC3843A
SMPS Controller
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Contents
General description
The UC3842A/UC3843A are fixed
PWM controller for Off-Line and DC to
DC converter applications. The internal
circuits include UVLO, low start up
current circuit, temperature
compensated reference, high gain error
amplifier, current sensing comparator,
and high current totem-pole out-put for
driving a POWER MOSFET. Also
UC3842A/ UC3843A provide low start
up current below 0.3mA and short
shutdown delay time typ. 100ns. The
UC3842A has UVLO threshold of
16V(on) and 10V(off). The UC3843A
is 8.4V(on) and 7.6V(off). The
UC3842A and UC3843A can operate
within 100% duty cycle.
Features
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Low Start Current 0.2mA (typ)
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Operating Range Up To 500KHz
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Cycle by Cycle Current Limiting
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Under Voltage Lock Out With
Hysteresis
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Short Shutdown Delay Time: typ.100ns
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High Current Totem-pole Output
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Output Swing Limiting: 22V
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Datasheet
This pagePrint version
file:///D|/PDF/UC3843A.html (1 of 2) [26-Jul-2002 2:32:58 PM]
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相關PDF資料 |
PDF描述 |
|---|---|
| UC3843ADW | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| UC3843D1X | |
| UC3844D1X | |
| UC3842D1X | |
| UC3845D1X | |
相關代理商/技術參數 |
參數描述 |
|---|---|
| UC3843AJ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller |
| UC3843AL-D08-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| UC3843AL-S08-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS |
| 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: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) |
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