參數(shù)資料
型號(hào)： UC3842ADX
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(shù)： 3/12頁
文件大?。?/td> 104K
代理商： UC3842ADX
Product Folder - Fairchild P/N UC3843A - SMPS Controller
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Product Folders and
Datasheets
Application
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UC3843A
SMPS Controller
Related Links
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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
q
Low Start Current 0.2mA (typ)
q
Operating Range Up To 500KHz
q
Cycle by Cycle Current Limiting
q
Under Voltage Lock Out With
Hysteresis
q
Short Shutdown Delay Time: typ.100ns
q
High Current Totem-pole Output
q
Output Swing Limiting: 22V
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Datasheet
file:///D|/PDF/UC3843A.html (1 of 2) [26-Jul-2002 2:32:58 PM]
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相關(guān)PDF資料
PDF描述
UC3843ADX
UC3843ADW 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
UC3843D1X
UC3844D1X
UC3842D1X
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UC3842AJ 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller
UC3842AL-D08-T 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS
UC3842AL-S08-R 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS
UC3842AL-S08-T 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:CURRENT MODE PWM CONTROL CIRCUITS
UC3842AM 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:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
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