LM26400Y

更新时间： 2024-11-26 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

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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

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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

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