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UC2843AD1中文资料意法半导体数据手册PDF规格书

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厂商型号

UC2843AD1

功能描述

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

文件大小

167.48 Kbytes

页面数量

16

生产厂商

STMICROELECTRONICS

中文名称

意法半导体

网址

网址

数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-12-11 23:01:00

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UC2843AD1规格书详情

DESCRIPTION

The UC384xA family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state.

Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC3842A and UC3844A have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC3843A and UC3845A are 8.5 V and 7.9V. The UC3842A and UC3843A can operate to duty cycles approaching 100. A range of the zero to

FEATURES

■ TRIMMED OSCILLATOR DISCHARGE CURRENT

■ CURRENT MODE OPERATION TO 500kHz AUTOMATIC FEED FORWARD COMPENSATION

■ LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING

■ INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT

■ HIGH CURRENT TOTEM POLE OUTPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS

■ LOW START-UP CURRENT (

产品属性

  • 型号:

    UC2843AD1

  • 功能描述:

    电流型 PWM 控制器 52kHz 1A Current PWM

  • RoHS:

  • 制造商:

    Texas Instruments

  • 开关频率:

    27 KHz

  • 工作电源电压:

    6 V to 15 V

  • 工作电源电流:

    1.5 mA

  • 输出端数量:

    1

  • 最大工作温度:

    + 105 C

  • 安装风格:

    SMD/SMT

  • 封装/箱体:

    TSSOP-14

供应商 型号 品牌 批号 封装 库存 备注 价格
ST/意法
24+
NA/
25046
原装现货,当天可交货,原型号开票
询价
ST
20+
SOP8
35830
原装优势主营型号-可开原型号增税票
询价
ST
24+
SOP8
20000
全新原厂原装,进口正品现货,正规渠道可含税!!
询价
STM
23+
NA
1976
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询价
ST
24+
SOP8
5989
公司原厂原装现货假一罚十!特价出售!强势库存!
询价
ON/安森美
23+
SOP-8
11200
原厂授权一级代理、全球订货优势渠道、可提供一站式BO
询价
ST
25+23+
SOP-8
34405
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询价
STM
25+
4500
百分百原装正品 真实公司现货库存 本公司只做原装 可
询价
ST
22+
SOP-8
5000
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ST
25+
SOP-8
3000
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询价