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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

Rating Catalog Topology Buck Iout (max) (A) 50 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 3.6 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Remote Sense Operating temperature range (°C) -5 to 125 Iq (typ) (µA) 650 Duty cycle (max) (%) 81 Number of phases 2
Rating Catalog Topology Buck Iout (max) (A) 50 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 3.6 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Remote Sense Operating temperature range (°C) -5 to 125 Iq (typ) (µA) 650 Duty cycle (max) (%) 81 Number of phases 2
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

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

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