LM2590HV

更新时间： 2024-11-17 22:55:43

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
20页	753K
描述
SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features

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LM2590HV 数据手册

December 2001

LM2590HV

SIMPLE SWITCHER^®Power Converter 150 kHz 1A

Step-Down Voltage Regulator, with Features

General Description

Features

n 3.3V, 5V, and adjustable output versions

The LM2590HV series of regulators are monolithic inte-

grated circuits that provide all the active functions for a

step-down (buck) switching regulator, capable of driving a

1A load with excellent line and load regulation. These de-

vices are available in fixed output voltages of 3.3V, 5V, and

an adjustable output version.

n Adjustable version output voltage range, 1.2V to 57V

4% max over line and load conditions

n Guaranteed 1A output load current

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

Package

This series of switching regulators is similar to the

LM2591HV with additional supervisory and performance fea-

tures.

n Input voltage range up to 60V

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

n Out of regulation error flag

n Error flag delay

n Low power standby mode, I_Qtypically 90 µA

n High Efficiency

n Thermal shutdown and current limit protection

†

compensation , improved line and load specifications,

fixed-frequency oscillator, Shutdown/Soft-start, output error

flag and flag delay.

The LM2590HV 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.

Applications

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

n Efficient pre-regulator for linear regulators

n On-card switching regulators

Other features include a guaranteed 4% tolerance on out-

n Positive to Negative converter

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 90 µA

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.

Typical Application (Fixed Output Voltage Versions)

10134701

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

DS101347

www.national.com

12 3 4 5 6 7...20

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与LM2590HV相关器件

型号	品牌	获取价格	描述	数据表
LM2590HV5.0MWC	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC, WAFER, Switching Regulator or
LM2590HV-AQ	NSC	获取价格	SIMPLE SWITCHER㈢Power Converter 150 kHz 1A St
LM2590HVS-3.3	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2590HVS-3.3/NOPB	TI	获取价格	具有多种特性的 SIMPLE SWITCHER 电源转换器 150 KHz 1A 降压电压
LM2590HVS-3.3/NOPB	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN, Switching Re
LM2590HVS3.3-AQ	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, SSO7, LEAD FREE, TO-263, 7 PIN, Sw
LM2590HVS-5.0	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2590HVS-5.0/NOPB	TI	获取价格	具有多种特性的 SIMPLE SWITCHER 电源转换器 150 KHz 1A 降压电压
LM2590HVS-5.0/NOPB	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN, Switching Re
LM2590HVS5.0-AQ	TI	获取价格	3A SWITCHING REGULATOR, 173kHz SWITCHING FREQ-MAX, SSO7, LEAD FREE, TO-263, 7 PIN

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