Datasheet > LM3100

LM3100

更新时间： 2024-11-23 04:20:11

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
15页	1066K
描述
SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-Down Voltage Regulator

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LM3100 数据手册

February 2006

LM3100

SIMPLE SWITCHER^®Synchronous 1MHz 1.5A

Step-Down Voltage Regulator

General Description

Features

n Input voltage range 4.5V - 36V

n 1.5A output current

n 0.8V, 1.5% reference

The LM3100 Synchronously Rectified Buck Converter fea-

tures all functions needed to implement a highly efficient,

cost effective buck regulator capable of supplying 1.5A to

loads with voltages as low as 0.8V. Dual 40V N-Channel

synchronous MOSFET switches allow for low external com-

ponent thus reducing complexity and minimizing board

space. The LM3100 is designed to work exceptionally well

with ceramic and other very low ESR output capacitors. The

Constant ON-Time (COT) regulation scheme requires no

loop compensation, results in fast load transient response,

and simplifies circuit implementation. Through the use of a

unique design the regulator does not rely on output capacitor

ESR for stability, as do most other COT regulators. The

operating frequency remains nearly constant with line and

load variations due to the inverse relationship between the

input voltage and the on-time. The oprating frequency can

be externally programmed up to 1MHz. Protection features

include V_CCunder-voltage lockout, thermal shutdown and

gate drive under-voltage lockout. The part is available in a

thermally enhanced eTSSOP-20 package

n Integrated 40V, dual N-Channel buck synchronous

switches

n Low component count and small solution size

n No loop compensation required

n Ultra-fast transient response

n Stable with ceramic and other low ESR capacitors

n Programmable switching frequency up to 1MHz

n Max. duty cycle limited during start-up

n Valley current limit

n Precision Internal Reference for adjustable output

voltage down to 0.8V

n Thermal shutdown

n Thermally enhanced eTSSOP-20 package

Typical Applications

n 5VDC, 12VDC, 24VDC, 12VAC, and 24VAC systems

n Embedded Systems

n Industrial Controls

n Automotive Telematics and Body Electronics

n Point of Load Regulators

n Storage Systems

n Broadband Infrastructure

n Direct Conversion from 2/3/4 Cell Lithium Batteries

Systems

Typical Application

20174702

SIMPLE SWITCHER^®is a registered trademark of National Semiconductor Corporation

DS201747

www.national.com

12 3 4 5 6 7...15

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与LM3100相关器件

型号	品牌	获取价格	描述	数据表
LM3100_07	NSC	获取价格	SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-D
LM31003DJ	LITTELFUSE	获取价格	The Class J Fuse Disconnect Switch combines a switch and multiple fuses in a single, compa
LM31003NJ	LITTELFUSE	获取价格	The Class J Fuse Disconnect Switch combines a switch and multiple fuses in a single, compa
LM31003PJ	LITTELFUSE	获取价格	The Class J Fuse Disconnect Switch combines a switch and multiple fuses in a single, compa
LM3100MH	NSC	获取价格	SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-D
LM3100MH	TI	获取价格	同步 1MHz 1.5A 降压稳压器 \| PWP \| 20 \| -40 to 125
LM3100MH/NOPB	NSC	获取价格	IC SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20, ROHS COMPLIANT, PLASTIC, TSSO
LM3100MH/NOPB	TI	获取价格	同步 1MHz 1.5A 降压稳压器 \| PWP \| 20 \| -40 to 125
LM3100MHX	NSC	获取价格	SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-D
LM3100MHX/NOPB	NSC	获取价格	IC 1.9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, TSSOP-20, Swit

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