Datasheet > LM3753

LM3753

更新时间： 2024-09-18 05:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器稳压器控制器
页数	文件大小	规格书
38页	1014K
描述
Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller

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LM3753 数据手册

December 14, 2009

LM3753/54

Scalable 2-Phase Synchronous Buck Controllers with

Integrated FET Drivers and Linear Regulator Controller

Phase current sharing ±12% max over temperature

■

General Description

Integrated 4.35V ±2.3% LDO

The LM3753 and LM3754 are full featured single-output dual-

Inductor DCR or sense resistor current sensing

■

phase voltage-mode synchronous PWM buck controllers.

They can be configured to control from 2 to 12 interleaved

power stages creating a single high power output. Both con-

trollers utilize 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.

Interleaved switching for low I/O ripple current

Integrated synchronous NFET drivers

Programmable Soft-Start (LM3754) or Tracking (LM3753)

Pre-biased startup (LM3754)

Output voltage differential remote sensing

Minimum controllable on-time of only 50 ns

Programmable Enable and input UVLO

Power Good flag

The LM3753 supports a Tracking function, while the LM3754

supports adjustable Soft-Start. The LM3753 Tracking is al-

ways enabled, so the output is controlled both up and down.

The Soft-Start function on the LM3754 can only drive the out-

put 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 LLP package with a thermal pad.

OVP, UVP and hiccup over-current protection

Applications

CPUs, GPUs (graphic cards), ASICs, FPGAs, Large

■

Memory Arrays, DDR

High Current POL Converters

Features

■

Wide input voltage range of 4.5V to 18V

■

Networking Systems

Up to 12 channels for 300A load

Power Distribution Systems

System accuracy better than 1%

Telecom/Datacom DC/DC Converters

0.6V to 3.6V output voltage range

Desktops, Servers and Workstations

■

Switching frequency from 200 kHz to 1 MHz

■

Simplified Application

30091901

300919

www.national.com

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与LM3753相关器件

型号	品牌	获取价格	描述	数据表
LM3753_1	NSC	获取价格	Evaluation Board evaluation board is designed to provide
LM3753SQ	NSC	获取价格	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regul
LM3753SQ/NOPB	TI	获取价格	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers & Linear
LM3753SQX	NSC	获取价格	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regul
LM3754	NSC	获取价格	Evaluation Board evaluation board is designed to provide
LM3754	TI	获取价格	Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regula
LM3754_15	TI	获取价格	Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regula
LM3754SQ	NSC	获取价格	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regul
LM3754SQ/NOPB	TI	获取价格	Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regula
LM3754SQX	NSC	获取价格	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regul

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