LM3753 datasheet(1/49 Pages) TI1

部品番号	LM3753

部品情報	LM3753 Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and Linear Regulator Controller

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LM3753

www.ti.com

SNVS614B – DECEMBER 2009 – REVISED MARCH 2013

LM3753 Scalable 2-Phase Synchronous Buck Controller with Integrated FET Drivers and

Linear Regulator Controller

Check for Samples: LM3753

1

FEATURES

APPLICATIONS

2

•

Wide Input Voltage Range of 4.5V to 18V

•

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

Large Memory Arrays, DDR

•

Up to 12 Channels for 300A Load

•

High Current POL Converters

•

System Accuracy Better Than 1%

•

Networking Systems

•

0.6V to 3.6V Output Voltage Range

•

Power Distribution Systems

•

Switching Frequency From 200 kHz to 1 MHz

•

Telecom/Datacom DC/DC Converters

•

Phase Current Sharing ±12% Max Over

Temperature

•

Desktops, Servers and Workstations

•

Integrated 4.35V ±2.3% LDO

DESCRIPTION

•

Inductor DCR or Sense Resistor Current

Not Recommended for New Designs — See

Sensing

LM3754

•

Interleaved Switching for Low I/O Ripple

The LM3753 is a full featured single-output dual-

Current

phase

voltage-mode

synchronous

PWM

buck

•

Integrated Synchronous NFET Drivers

controller. It can be configured to control from 2 to 12

•

Dedicated Tracking Function

interleaved power stages creating a single high power

output. This controller utilizes voltage-mode control

•

Output Voltage Differential Remote Sensing

with

input

voltage

feed-forward

for

high

noise

•

Minimum Controllable On-Time of Only 50 ns

immunity. An internal average current loop forces real

•

Programmable Enable and Input UVLO

time current sharing between phases during load

transients.

•

Power Good Flag

•

OVP, UVP and Hiccup Over-Current Protection

The LM3753 supports a Tracking function, so the

output is controlled both up and down. This allows the

output voltage to follow a system supply through the

use of the TRACK pin. Available in the 5 mm x 5 mm

thermally enhanced 32-lead WQFN package with a

thermal pad.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

同様の部品番号 - LM3753

メーカー	部品番号	データシート	部品情報
National Semiconductor ...	LM3753	1Mb / 38P	Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller
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同様の説明 - LM3753

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