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参数

Vin (Min) (V) 3.8 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 24 Iout (Max) (A) 4 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 1000 Features Enable, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Wettable Flanks Package Control mode Current Mode Duty cycle (Max) (%) 98 Type Converter Operating temperature range (C) -40 to 125 Rating Catalog open-in-new 查找其它 降压转换器(集成开关)

封装|引脚|尺寸

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new 查找其它 降压转换器(集成开关)

特性

  • Configured for rugged industrial applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Peak-current mode control
    • Junction temperature range: –40°C to +125°C
    • Ease-of-use SOIC package
  • Well-suited for scalable industrial power supplies
    • Pin compatible with:
    • 400-kHz and 1-MHz frequency
    • Integrated compensation helps reduce solution size, cost, and design complexity
  • High-efficiency solution
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 24 µA
  • Flexible system interface
    • Power-good flag and precision enable
  • Create a custom design using the LMR33640 with the WEBENCH® Power Designer
  • Use TPSM53604 module for faster time to market

All trademarks are the property of their respective owners.

open-in-new 查找其它 降压转换器(集成开关)

描述

The LMR33640 SIMPLE SWITCHER® regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33640 drives up to 4 A of load current from an input of up to 36 V. The LMR33640 provides high light-load efficiency and output accuracy. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33640 automatically folds back frequency at light load to improve efficiency. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. Integration and internal compensation eliminates many external components and provides a pinout designed for a simple PCB layout. The feature set of the device is designed to simplify implementation for a wide range of end equipment. The LMR33640 is pin-to-pin compatible with the LMR33610, LMR33620, LMR33630 (36 V, 1 A/2, A/3 A), LMR36510 (65 V, 1 A), and LMR36520 (65 V, 2 A), completing the family of scalable SIMPLE SWITCHER power supplies. This minimizes the cost and effort associated with board layout modifications. The LMR33640 is available in an 8-pin HSOIC package.

open-in-new 查找其它 降压转换器(集成开关)
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功能相同,但与相比较的设备引脚不同或参数不等效:
NEW TPSM53604 正在供货 MIS 基板上的直流/直流电源模块,具有 36V 输入、2-4A 输出并采用 5x5.5 QFN 封装 Save board space, simplify design, and speed time to market with an integrated-inductor power module.

技术文档

= 特色
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类型 标题 下载最新的英文版本 发布
应用手册 Working with Inverting Buck-Boost Converters 2020年 5月 14日
技术文章 3 tips when designing a power stage for servo and AC drives 2019年 11月 20日
用户指南 LMR33640EVM User's Guide 2019年 11月 1日
技术文章 Minimize the impact of the MLCC shortage on your power application 2019年 3月 29日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
LMR33640EVM
LMR33640EVM
document-generic 用户指南
$49.00
说明
LMR33640 评估模块 (EVM) 是一个经全面组装和测试的电路,用于评估 LMR33640ADDA 同步降压转换器。
特性
  • 集成同步整流
  • 工作静态电流低
  • 轻负载效率高
  • 最小导通时间短

设计工具和仿真

仿真模型 下载
SNVMBV0.ZIP (175 KB) - PSpice Model
仿真模型 下载
SNVMBV1.ZIP (172 KB) - PSpice Model

CAD/CAE 符号

封装 引脚 下载
SO PowerPAD (DDA) 8 视图选项

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