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LM20136

更新时间： 2024-09-23 11:53:43

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
22页	511K
描述
6A, Synchronous Buck Regulator with Input Synchronization

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LM20136 数据手册

February 12, 2009

LM20136

6A, Synchronous Buck Regulator with Input

Synchronization

General Description

Features

The LM20136 is a full featured synchronous buck regulator

capable of delivering up to 6A of continuous output current.

The current mode control loop can be compensated to be

stable with virtually any type of output capacitor. For most

cases, compensating the device only requires two external

components, providing maximum flexibility and ease of use.

The device is optimized to work over the input voltage range

of 2.95V to 5.5V making it suitable for a wide variety of low

voltage systems.

Input voltage range 2.95V to 5.5V

■

Accurate current limit minimizes inductor size

97% peak efficiency

■

Frequency synchronization pin

16mΩ and 20mΩ integrated FET switches

Starts up into pre-biased loads

Output voltage tracking

Peak current mode control

The device features internal over voltage protection (OVP)

and over current protection (OCP) circuits for increased sys-

tem reliability. A precision enable pin and integrated UVLO

allows the turn on of the device to be tightly controlled and

sequenced. Start-up inrush currents are limited by both an

internally fixed and externally adjustable Soft-Start circuit.

Fault detection and supply sequencing are possible with the

integrated power good circuit.

Adjustable output voltage down to 0.8V

Adjustable Soft-Start with external capacitor

Precision enable pin with hysteresis

Integrated OVP, UVLO, power good and thermal

shutdown

eTSSOP-16 exposed pad package

■

The switching frequency of the LM20136 can be synchro-

nized to an external clock by use of the SYNC pin. The SYNC

pin is capable of synchronizing to input signals ranging from

500 kHz to 1.5 MHz

Applications

Simple to design, high efficiency point of load regulation

■

from a 5V or 3.3V bus

High Performance DSPs, FPGAs, ASICs and

microprocessors

Broadband, Networking and Optical Communications

Infrastructure

■

The LM20136 is designed to work well in multi-rail power

supply architectures. The output voltage of the device can be

configured to track a higher voltage rail using the SS/TRK pin.

If the output of the LM20136 is pre-biased at startup it will not

pull the ouput low.

■

The LM20136 is offered in a 16-pin eTSSOP package with an

exposed pad that can be soldered to the PCB, eliminating the

need for bulky heatsinks.

Typical Application Circuit

30053901

PowerWise is a registered trademark of National Semiconductor Corporation.

300539

www.national.com

12 3 4 5 6 7...22

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与LM20136相关器件

型号	品牌	获取价格	描述	数据表
LM20136_15	TI	获取价格	LM20136 6A, Synchronous Buck Regulator with Input Synchronization
LM20136MH	NSC	获取价格	6A, Synchronous Buck Regulator with Input Synchronization
LM20136MH/NOPB	TI	获取价格	LM20136 6A, Synchronous Buck Regulator with Input Synchronization
LM20136MHE	NSC	获取价格	6A, Synchronous Buck Regulator with Input Synchronization
LM20136MHE/NOPB	TI	获取价格	LM20136 6A, Synchronous Buck Regulator with Input Synchronization
LM20136MHX	NSC	获取价格	6A, Synchronous Buck Regulator with Input Synchronization
LM20136MHX/NOPB	TI	获取价格	LM20136 6A, Synchronous Buck Regulator with Input Synchronization
LM20143	NSC	获取价格	3A, PowerWise㈢ Adjustable Frequency Synchrono
LM20143	TI	获取价格	具有调频功能的2.95V 至 5.5V、3A、电流模式同步降压稳压器
LM20143MH	NSC	获取价格	3A, PowerWise㈢ Adjustable Frequency Synchrono

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