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AC/DC & DC/DC controllers (external FET)

LM3754

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具有集成 FET 驱动器的 4.5V 至 18V 可扩展两相同步降压控制器

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数据表

LM3754

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数据表 立即订购

产品详情

Vin (min) (V) 4.5 Vin (max) (V) 18 Iout (max) (A) 50 Operating temperature range (°C) -5 to 125 Control mode Voltage mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 3.6 Iq (typ) (A) 0.00065 Duty cycle (max) (%) 81
Vin (min) (V) 4.5 Vin (max) (V) 18 Iout (max) (A) 50 Operating temperature range (°C) -5 to 125 Control mode Voltage mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 3.6 Iq (typ) (A) 0.00065 Duty cycle (max) (%) 81
WQFN (RTV) 32 25 mm² 5 x 5
  • Wide Input Voltage Range of 4.5V to 18V
  • Up to 12 Channels for 300A Load
  • System Accuracy Better Than 1%
  • 0.6V to 3.6V Output Voltage Range
  • Switching Frequency From 200 kHz to 1 MHz
  • Phase Current Sharing ±12% Max Over Temperature
  • Integrated 4.35V ±2.3% LDO
  • Inductor DCR or Sense Resistor Current Sensing
  • Interleaved Switching for Low I/O Ripple Current
  • Integrated Synchronous NFET Drivers
  • Programmable Soft-Start
  • Pre-Biased Startup
  • Output Voltage Differential Remote Sensing
  • Minimum Controllable On-Time of Only 50 ns
  • Programmable Enable and Input UVLO
  • Power Good flag
  • OVP, UVP and Hiccup Over-Current Protection

All trademarks are the property of their respective owners.

  • Wide Input Voltage Range of 4.5V to 18V
  • Up to 12 Channels for 300A Load
  • System Accuracy Better Than 1%
  • 0.6V to 3.6V Output Voltage Range
  • Switching Frequency From 200 kHz to 1 MHz
  • Phase Current Sharing ±12% Max Over Temperature
  • Integrated 4.35V ±2.3% LDO
  • Inductor DCR or Sense Resistor Current Sensing
  • Interleaved Switching for Low I/O Ripple Current
  • Integrated Synchronous NFET Drivers
  • Programmable Soft-Start
  • Pre-Biased Startup
  • Output Voltage Differential Remote Sensing
  • Minimum Controllable On-Time of Only 50 ns
  • Programmable Enable and Input UVLO
  • Power Good flag
  • OVP, UVP and Hiccup Over-Current Protection

All trademarks are the property of their respective owners.

The LM3754 is a full featured single-output dual-phase voltage-mode synchronous PWM buck controller. It can be configured to control from 2 to 12 interleaved power stages creating a single high power output. This controller utilizes voltage-mode control with input voltage feed-forward for high noise immunity. An internal average current loop forces real time current sharing between phases during load transients.

The LM3754 supports adjustable Soft-Start. The Soft-Start function can only drive the output upwards – it will not pull it down, therefore, pre-biased loads will not be discharged. Available in the 5 mm x 5 mm thermally enhanced 32-lead WQFN package with a thermal pad.

The LM3754 is a full featured single-output dual-phase voltage-mode synchronous PWM buck controller. It can be configured to control from 2 to 12 interleaved power stages creating a single high power output. This controller utilizes voltage-mode control with input voltage feed-forward for high noise immunity. An internal average current loop forces real time current sharing between phases during load transients.

The LM3754 supports adjustable Soft-Start. The Soft-Start function can only drive the output upwards – it will not pull it down, therefore, pre-biased loads will not be discharged. Available in the 5 mm x 5 mm thermally enhanced 32-lead WQFN package with a thermal pad.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM3754 Scalable 2-Phase Synchronous Buck Controller w/ FET 数据表 (Rev. B) 2013年 4月 5日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
模拟设计期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
模拟设计期刊 使用多相降压转换器的好处 英语版 2012年 3月 1日
模拟设计期刊 2012 年第 1 季度刊模拟应用学报 2012年 1月 31日
EVM 用户指南 AN-2021 LM3753/54 Evaluation Board 2009年 12月 15日

设计和开发

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WQFN (RTV) 32 查看选项
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订购和质量

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/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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