Datasheet > 电源电路 > 开关式稳压器或控制器> LM2590HV-AQ

LM2590HV-AQ

更新时间： 2024-09-30 02:51:59

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
22页	886K
描述
SIMPLE SWITCHER㈢Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features

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LM2590HV-AQ 数据手册

May 2004

LM2590HV-AQ

SIMPLE SWITCHER^®Power Converter 150 kHz 1A

Step-Down Voltage Regulator, with Features

General Description

Features

n Reliability Qualification for Automotive

n 3.3V, 5V, and adjustable output versions

The LM2590HV-AQ regulator is a monolithic integrated cir-

cuit which provides all the active functions for a step-down

(buck) switching regulator, and is capable of driving a 1 Amp

load with excellent line and load regulation. The

LM2590HV-AQ is available in fixed output voltages of 3.3V,

5.0V, as well as 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

n Input voltage range up to 60V

n 150 kHz fixed frequency internal oscillator

n Shutdown/Soft-start

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

The LM2590HV-AQ switching regulator is similar to the

LM2591HV with additional supervisory and performance fea-

tures.

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, output error flag

and flag delay.

The LM2590HV-AQ operates at a switching frequency of

150 kHz thus allowing smaller sized filter components than

what would be needed with lower frequency switching regu-

lators. 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-

put voltage under all conditions of input voltage and output

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.

n Positive to Negative converter

†

Note: Patent Number 5,382,918.

Typical Application (Fixed Output Voltage Versions)

20097101

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

DS200971

www.national.com

12 3 4 5 6 7...22

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与LM2590HV-AQ相关器件

型号	品牌	获取价格	描述	数据表
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
LM2590HVS-ADJ	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2590HVS-ADJ/NOPB	NSC	获取价格	IC 3 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, 7 PIN, Switching Re

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