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E-L4973D3.3-TR中文资料意法半导体数据手册PDF规格书

E-L4973D3.3-TR
厂商型号

E-L4973D3.3-TR

功能描述

3.5A step down switching regulator

文件大小

367.28 Kbytes

页面数量

27

生产厂商 STMicroelectronics
企业简称

STMICROELECTRONICS意法半导体

中文名称

意法半导体集团官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-7-2 19:10:00

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E-L4973D3.3-TR规格书详情

Description

The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V and using a simple external divider output adjustable voltage up to 50V. Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical RDS(on) of 0.15Ω) to obtain very high efficiency and very fast switching times. Switching frequency up to 300KHz are achievable (the maximum power dissipation of the packages must be observed).

Features

■ Up to 3.5A step down converter

■ Operating input voltage from 8V to 55V

■ 3.3V and 5.1V (±1) fixed output, and adjustable outputs from:

– 0.5V to 50V (3.3 type)

– 5.1V to 50V (5.1 type)

■ Frequency adjustable up to 300kHz

■ Voltage feed forward

■ Zero load current operation (min 1mA)

■ Internal current limiting (pulse by pulse and HICCUP mode)

■ Precise 5.1V (1.5) reference voltage externally available

■ Input/output synchronization function

■ Inhibit for zero current consumption (100mA typ. at VCC = 24V)

■ Protection against feedback disconnection

■ Thermal shutdown

■ Output over voltage protection

■ Soft start function

产品属性

  • 型号:

    E-L4973D3.3-TR

  • 制造商:

    STMicroelectronics

  • 功能描述:

    Conv DC-DC Single Step Down 8V to 55V 20-Pin SO T/R

  • 功能描述:

    CONV DC-DC SGL-OUT STEP DOWN 20SOIC - Tape and Reel

供应商 型号 品牌 批号 封装 库存 备注 价格
ST/意法
24+
NA
990000
明嘉莱只做原装正品现货
询价
STM
ROHS
56520
一级代理 原装正品假一罚十价格优势长期供货
询价
ST/意法
23+
25600
原厂授权一级代理,专业海外优势订货,价格优势、品种
询价
STM
24+
NA
5000
只做原装正品现货 欢迎来电查询15919825718
询价
ST
25+23+
SOP
21821
绝对原装正品全新进口深圳现货
询价
ST
24+
10000
询价
STMicroelect
23+
18-DIP
8795
询价
E-L4978D
785
785
询价
STM
23+
316
询价
23+
SOP
5000
原装正品,假一罚十
询价