LM26400Y

更新时间： 2024-09-14 04:44:39

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
24页	2449K
描述
Dual 2A, 500kHz Wide Input Range Buck Regulator

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM26400Y 数据手册

February 2007

LM26400Y

Dual 2A, 500kHz Wide Input Range Buck Regulator

General Description

Features

The LM26400Y is a monolithic, two-output fixed frequency

PWM step-down DC/DC regulator in a 16-pin LLP or thermally

enhanced ETSSOP package. With a minimum number of ex-

ternal components and internal loop compensation, the

LM26400Y is easy to use. The ability to drive 2A loads with

an internal 175mΩ NMOS switch using state-of-the-art 0.5µm

BiCMOS technology results in a high-power density design.

The world class control circuitry allows for an ON-time as low

as 40 ns, thus supporting high-frequency conversion over the

entire input range of 3V to 20V and down to an output voltage

of only 0.6V. The LM26400Y utilizes peak current-mode con-

trol and internal compensation to provide high-performance

regulation over a wide range of line and load conditions.

Switching frequency is internally set to 500kHz, optimal for a

broad range of applications in terms of size versus thermal

tradeoffs. Given a non-synchronous architecture, efficiencies

above 90% are easy to achieve. External shutdown is includ-

ed, enabling separate turn-on and turn-off of the two chan-

nels. Additional features include programmable soft-start

circuitry to reduce inrush current, pulse-by-pulse current limit

and frequency foldback, integrated bootstrap structure and

thermal shutdown.

Input voltage range of 3-20V

■

Dual 2A output

Output voltage down to 0.6V

Internal compensation

500kHz PWM frequency

Separate enable pins

Separate soft start pins

Frequency foldback protection

175mΩ NMOS switch

Integrated bootstrap diodes

Over-current protection

ETSSOP and LLP packages

Thermal shutdown

Applications

DTV-LCD

■

Set-Top Box

XDSL

Automotive

Computing Peripherals

Industrial Controls

Point of Load

Typical Application

20200252

202002

www.national.com

12 3 4 5 6 7...24

中文翻译

下载PDF

与LM26400Y相关器件

型号	品牌	获取价格	描述	数据表
LM26400Y_0708	NSC	获取价格	Dual 2A, 500kHz Wide Input Range Buck Regulator
LM26400Y_15	TI	获取价格	LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator
LM26400YMH	NSC	获取价格	Dual 2A, 500kHz Wide Input Range Buck Regulator
LM26400YMH/NOPB	NSC	获取价格	IC 2 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO16, ETSSOP-16, Switching Regul
LM26400YMH/NOPB	TI	获取价格	LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator
LM26400YMHX	NSC	获取价格	Dual 2A, 500kHz Wide Input Range Buck Regulator
LM26400YMHX/NOPB	NSC	获取价格	IC 2 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO16, ETSSOP-16, Switching Regul
LM26400YMHX/NOPB	ROCHESTER	获取价格	2 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO16, ETSSOP-16
LM26400YMHX/NOPB	TI	获取价格	LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator
LM26400YSD	NSC	获取价格	Dual 2A, 500kHz Wide Input Range Buck Regulator