Datasheet > LM3100_07

LM3100_07

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
18页	3479K
描述
SIMPLE SWITCHER㈢ Synchronous 1MHz 1.5A Step-Down Voltage Regulator

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LM3100_07 数据手册

August 2007

LM3100

SIMPLE SWITCHER® Synchronous 1MHz 1.5A Step-Down

Voltage Regulator

General Description

Features

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 syn-

chronous MOSFET switches allow for low external compo-

nent thus reducing complexity and minimizing board space.

The LM3100 is designed to work exceptionally well with ce-

ramic and other very low ESR output capacitors. The Con-

stant 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 varia-

tions 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_CCun-

der-voltage lockout, thermal shutdown and gate drive under-

voltage lockout. The part is available in a thermally enhanced

eTSSOP-20 package

Input voltage range 4.5V - 36V

■

1.5A output current

0.8V, ±1.5% reference

Integrated 40V, dual N-Channel buck synchronous

switches

Low component count and small solution size

■

No loop compensation required

Ultra-fast transient response

Stable with ceramic and other low ESR capacitors

Programmable switching frequency up to 1MHz

Max. duty cycle limited during start-up

Valley current limit

Precision Internal Reference for adjustable output voltage

down to 0.8V

Thermal shutdown

■

Thermally enhanced eTSSOP-20 package

Typical Applications

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

■

Embedded Systems

Industrial Controls

Automotive Telematics and Body Electronics

Point of Load Regulators

Storage Systems

Broadband Infrastructure

Direct Conversion from 2/3/4 Cell Lithium Batteries

Systems

Typical Application

20174702

SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation

201747

www.national.com

12 3 4 5 6 7...18

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与LM3100_07相关器件

型号	品牌	获取价格	描述	数据表
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
LM3100MHX/NOPB	TI	获取价格	同步 1MHz 1.5A 降压稳压器 \| PWP \| 20 \| -40 to 125

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