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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, Soft Start Fixed, Synchronous Rectification, UVLO Adjustable, Wettable Flanks Package Control mode Current Mode Duty cycle (Max) (%) 98 Type Converter Operating temperature range (C) -40 to 150 Rating Catalog open-in-new 查找其它 降压转换器(集成开关)

特性

  • Low EMI and switching noise
    • Meets CISPR22 class 5 standard
    • Enhanced QFN package minimizes parasitic inductance and switch node ringing
  • Configured for rugged industrial applications
    • Standard QFN footprint: single large thermal pad and all pins accessible from perimeter
    • Pin compatible variants:
    • Junction temperature range –40°C to +150°C
    • Frequency: 400 kHz, 1 MHz
    • Output voltage range: 1 V to 24 V
  • High efficiency power conversion at all loads
    • Peak efficiency > 95%
    • 90% PFM efficiency at 10-mA, 12 VIN, 5 VOUT
    • Low operating quiescent current of 25 µA
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • Create a custom design using the LM60440 with the WEBENCH® Power Designer

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 LM604x0 regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LM60430 drives up to 3-A of load current, and the LM60440 is industry’s smallest 4A step-down converter.

The LM604x0 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI.

The LM604x0 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0 are designed to simplify implementation for a wide range of end equipment.

This device is also available in an AEC-Q100-qualified version.

open-in-new 查找其它 降压转换器(集成开关)
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样品供货情况

可提供备选试生产样品 (PLM60440AQRPKRQ1)。此器件与 LM60440 具有相同的功能、引脚布局和封装,但并不完全等效。立即申请

技术文档

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类型 标题 下载最新的英文版本 发布
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
document-generic 用户指南
$49.00
说明
LM60440AQEVM 评估模块 (EVM) 帮助设计人员评估 LM60440-Q1 宽输入降压稳压器的运行和性能。LM60440-Q1 是一款易于使用的同步降压直流/直流转换器,能够驱动高达 4A 的负载电流,输入电压高达 36V。LMR34215-Q1 采用热优化和噪声优化的 2x3mm QFN 封装,该解决方案不仅尺寸小,而且解决了电磁干扰和热设计问题。
特性
  • 符合 CISPR 25 5 类标准
  • 抗电磁干扰增强型 QFN 封装
  • 优化热性能以实现高功率密度
  • 所需物料较少,解决方案尺寸小

设计工具和仿真

仿真模型 下载
SNVMBY4.ZIP (158 KB) - PSpice Model
仿真模型 下载
SNVMBY6.ZIP (177 KB) - PSpice Model

CAD/CAE 符号

封装 引脚 下载
WQFN-HR (RPK) 13 视图选项

订购与质量

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