Datasheet > LM2599_00

LM2599_00

更新时间： 2024-11-29 04:44:39

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器稳压器
页数	文件大小	规格书
32页	817K
描述
SIMPLE SWITCHER㈢ Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features

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LM2599_00 数据手册

December 2000

LM2599

SIMPLE SWITCHER^®Power Converter 150 kHz 3A

Step-Down Voltage Regulator, with Features

standby current. Self protection features include a two stage

current limit for the output switch and an over temperature

shutdown for complete protection under fault conditions.

General Description

The LM2599 series of regulators are monolithic integrated

circuits that provide all the active functions for a step-down

(buck) switching regulator, capable of driving a 3A load with

excellent line and load regulation. These devices are avail-

able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-

able output version.

Features

n 3.3V, 5V, 12V, and adjustable output versions

n Adjustable version output voltage range, 1.2V to 37V

4% max over line and load conditions

This series of switching regulators is similar to the LM2596

series, with additional supervisory and performance features

added.

n Guaranteed 3A output current

n Available in 7-pin TO-220 and TO-263 (surface mount)

Package

n Input voltage range up to 40V

n 150 kHz fixed frequency internal oscillator

n Shutdown/Soft-start

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

†

compensation , improved line and load specifications,

fixed-frequency oscillator, Shutdown/Soft-start, error flag de-

lay and error flag output.

n Out of regulation error flag

The LM2599 series operates at a switching frequency of 150

kHz thus allowing smaller sized filter components than what

would be needed with lower frequency switching regulators.

Available in a standard 7-lead TO-220 package with several

different lead bend options, and a 7-lead TO-263 Surface

mount package.

n Error output delay

n Low power standby mode, I_Qtypically 80 µA

n High Efficiency

n Uses readily available standard inductors

n Thermal shutdown and current limit protection

A standard series of inductors (both through hole and sur-

face mount types) are available from several different manu-

facturers optimized for use with the LM2599 series. This

feature greatly simplifies the design of switch-mode power

supplies.

Applications

n Simple high-efficiency step-down (buck) regulator

n Efficient pre-regulator for linear regulators

n On-card switching regulators

n Positive to Negative converter

Other features include a guaranteed 4% tolerance on out-

put voltage under all conditions of input voltage and output

†

Note: Patent Number 5,382,918.

load conditions, and 15% on the oscillator frequency. Ex-

ternal shutdown is included, featuring typically 80 µA

Typical Application (Fixed Output Voltage Versions)

DS012582-1

SIMPLE SWITCHER^®and Switchers Made Simple^®are registered trademarks of National Semiconductor Corporation.

DS012582

www.national.com

12 3 4 5 6 7...32

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与LM2599_00相关器件

型号	品牌	获取价格	描述	数据表
LM2599S-12	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
LM2599S-12/NOPB	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-3.3	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-3.3	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
LM2599S-3.3/NOPB	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-5.0	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-5.0	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features
LM2599S-5.0/NOPB	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-ADJ	TI	获取价格	LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2599S-ADJ	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features

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