Datasheet > LM2575S-5.0

LM2575S-5.0

更新时间： 2024-11-26 17:15:31

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友台半导体 - UMW		/
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LM2575S-5.0 数据手册

UMW

UMW LM2575/LM2575HV

2A Step-Down Voltage Regulator

General Description

Features

The LM2575 /LM2575HV series of regulators are monolithic

integrated circuits that provide all the active functions for a

step-down (buck) switching regulator, capable of driving a 2A

load with excellent line and load regulation. These devices

are available in fixed output voltages of 3.3V, 5V, 12V, and an

adjustable output version.

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

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

(57V for HV version)

4% max over line and load conditions

n Available in TO-220 and TO-263,TO-220B packages

n Guaranteed 2A output load current

n Input voltage range up to 40V

n Requires only 4 external components

n Excellent line and load regulation specifications

n 150 kHz fixed frequency internal oscillator

n TTL shutdown capability

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

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

†

compensation , and a fixed-frequency oscillator.

The LM2575 /LM2575HV series operates at a switching

frequency of150 kHz thus allowing smaller sized filter com-

pontents than what would be needed with lower frequency

switching regulators. Available in a standard 5-lead TO-220

package with several different lead bend options, and a

5-lesd TO-262 surface mount package.

standard series of inductors are available from

several different manufacturers optimized for use with the

LM2575series. This feature greatly simplifies the

design of switch-mode power supplies.

Applications

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

n On-card switching regulators

n Positive to negative converter

Other features include a guaranteed 4% tolerance on out-

put voltage under specified input voltage and output

†

Note: Patent Number 5,382,918.

load conditions, and 15% on the oscillator frequency.

External shutdown is included, featuring typically 80 µA

standby cur-rent. Self protection features include a two

stage frequency reducing current limit for the output

switch and an over temperature shutdown for complete

protection under fault conditions.

Typical Application ^{(Fixed Output Voltage}

Versions)

LM2575

/LM2575HV

5.0

Package Types

TO263-5L

TO220B-5L

TO220-5L

www.umw-ic.com

友台半导体有限公司

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与LM2575S-5.0相关器件

型号	品牌	获取价格	描述	数据表
LM2575S-5.0.TR	SEMTECH	获取价格	Analog IC
LM2575S-5.0.TRT	SEMTECH	获取价格	暂无描述
LM2575S-5.0/NOPB	TI	获取价格	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575S-5.0EP	NSC	获取价格	IC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5, TO-220, 5 PIN, Switching R
LM2575S-5.0T	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 3.2A, 62kHz Switching Freq-Max, PSSO5, TO-263, 5 PIN
LM2575S-5.0TR	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 3.2A, 62kHz Switching Freq-Max, BIPolar, PSSO5, TO-263,
LM2575S-5.0TRT	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 3.2A, 62kHz Switching Freq-Max, PSSO5, TO-263, 5 PIN
LM2575S-5TR	SEMTECH	获取价格	1A & 3A Miniconverter Switching Regulators
LM2575S-ADJ	NSC	获取价格	SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575S-ADJ	TI	获取价格	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator

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