产品详细信息

Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 28 Iout (Max) (A) 1 Iq (Typ) (uA) 80 Switching frequency (Min) (kHz) 935 Switching frequency (Max) (kHz) 1265 Features Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 28 Iout (Max) (A) 1 Iq (Typ) (uA) 80 Switching frequency (Min) (kHz) 935 Switching frequency (Max) (kHz) 1265 Features Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
SOT-23 (DBV) 6 SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4-V to 36-V input voltage range
    • Withstands up to 50-V short VIN transient
    • 0.6-A/1-A continuous output current
    • 60-ns minimum switching on time
    • 1.1-MHz fixed switching frequency
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Monotonic start-up with pre-biased output
    • Short circuit protection with hiccup mode
    • Precision enable
    • ±1% tolerance voltage reference
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the LMR14010A, LMR50410, and TPS560430
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4-V to 36-V input voltage range
    • Withstands up to 50-V short VIN transient
    • 0.6-A/1-A continuous output current
    • 60-ns minimum switching on time
    • 1.1-MHz fixed switching frequency
    • –40°C to 150°C junction temperature range
    • 98% maximum duty cycle
    • Monotonic start-up with pre-biased output
    • Short circuit protection with hiccup mode
    • Precision enable
    • ±1% tolerance voltage reference
  • Small solution size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Pin-to-pin compatible with the LMR14010A, LMR50410, and TPS560430
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options

The LMR544xx is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 1-A and 0.6-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR544xx operates at 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. It has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.

The LMR544xx is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 1-A and 0.6-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR544xx operates at 1.1-MHz switching frequency to support use of relatively small inductors for an optimized solution size. It has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.

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类型 标题 下载最新的英文版本 日期
* 数据表 LMR544xx SIMPLE SWITCHER® 4-V to 36-V (Up to 50-V Transient), 0.6-A/1-A Buck Converter in a SOT-23 Package 数据表 (Rev. A) 2021年 11月 19日
证书 LMR54410EVM EU RoHS Declaration of Conformity (DoC) 2021年 11月 16日
功能安全信息 LMR54410 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 2021年 10月 15日
用户指南 LMR54410EVM User's Guide 2021年 10月 15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

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评估板

LMR50410EVM — 4V 至 36V、1A 同步降压转换器评估模块

LMR50410EVM 评估模块 (EVM) 是一个组装完备且经过测试的电路,用于评估 LMR50410 降压转换器。该电路板可设置为 3.3V 的输出电压。此电路板还具有可用于环路测量的交流信号注入端子。
现货
数量限制: 5
评估板

LMR54410EVM — 带有 4-V 到 36-V、1-A 同步降压转换器的 LMR54410 评估模块

LMR54410EVM 是一个经全面组装和测试的电路,用于评估 LMR54410 降压转换器。此电路板包含一个连接使能引脚的跳线连接器,并提供可上拉至 VIN 或外部高电平使能输入的器件。此电路板设置为 3.3V 输出电压。此电路板还具有可用于环路测量的交流信号注入端子。
现货
数量限制: 2
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SOT-23 (DBV) 6 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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