LM25575

更新时间： 2024-10-27 04:44:39

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器开关
页数	文件大小	规格书
24页	418K
描述
42V, 1.5A Step-Down Switching Regulator

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LM25575 数据手册

January 2007

LM25575

42V, 1.5A Step-Down Switching Regulator

General Description

Features

The LM25575 is an easy to use SIMPLE SWITCHER® buck

regulator which allows design engineers to design and opti-

mize a robust power supply using a minimum set of compo-

nents. Operating with an input voltage range of 6 - 42V, the

LM25575 delivers 1.5A of continuous output current with an

integrated 330mΩ N-Channel MOSFET. The regulator uti-

lizes an Emulated Current Mode architecture which provides

inherent line regulation, tight load transient response, and

ease of loop compensation without the usual limitation of low-

duty cycles associated with current mode regulators. The

operating frequency is adjustable from 50kHz to 1MHz to al-

low optimization of size and efficiency. To reduce EMI, a

frequency synchronization pin allows multiple IC’s from the

LM(2)557x family to self-synchronize or to synchronize to an

external clock. The LM25575 guarantees robustness with cy-

cle-by-cycle current limit, short-circuit protection, thermal

shut-down, and remote shut-down. The device is available in

a power enhanced TSSOP-16 package featuring an exposed

die attach pad for thermal dissipation. The LM25575 is sup-

ported by the full suite of WEBENCH^®On-Line design tools.

Integrated 42V, 330mΩ N-channel MOSFET

Ultra-wide input voltage range from 6V to 42V

Adjustable output voltage as low as 1.225V

1.5% feedback reference accuracy

■

Operating frequency adjustable between 50kHz and

1MHz with single resistor

Master or slave frequency synchronization

Adjustable soft-start

■

Emulated current mode control architecture

Wide bandwidth error amplifier

Built-in protection

Package

TSSOP-16EP (Exposed Pad)

■

Simplified Application Schematic

20212101

WEBENCH^®is a registered trademark of National Semiconductor Corporation.

202121

www.national.com

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与LM25575相关器件

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LM25575MH	NSC	获取价格	42V, 1.5A Step-Down Switching Regulator
LM25575MH	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575MH/NOPB	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575MHX	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575MHX	NSC	获取价格	42V, 1.5A Step-Down Switching Regulator
LM25575MHX/NOPB	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575Q0MH	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575Q0MH/NOPB	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575Q0MHX/NOPB	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5
LM25575-Q1	TI	获取价格	LM25575/LM25575-Q1 SIMPLE SWITCHERÂ® 42V, 1.5