Datasheet > LM2596T-3.3

LM2596T-3.3

更新时间： 2024-11-19 17:14:51

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DC-DC芯片

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LM2596T-3.3 数据手册

UMW

UMW LM2596/LM2596HV

3A Step-Down Voltage Regulator

General Description

Features

The LM2596 /LM2596HV 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 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 3A 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 LM2596 /LM2596HV 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.

A standard series of inductors are available from several

different manufacturers optimized for use with the LM2596

series. 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 load

†

Note: Patent Number 5,382,918.

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)

LM2596

/LM2596HV

5.0

Package Types

TO263-5L

TO220B-5L

TO220-5L

www.umw-ic.com

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与LM2596T-3.3相关器件

型号	品牌	获取价格	描述	数据表
LM2596T-3.3/LF03	TI	获取价格	LM2596 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-3.3/NOPB	TI	获取价格	LM2596 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-5.0	TI	获取价格	Adjustable Version Output Voltage Range, 1.2V
LM2596T-5.0	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-5.0	UMW	获取价格	DC-DC芯片
LM2596T-5.0/LF03	TI	获取价格	LM2596 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-5.0/NOPB	TI	获取价格	LM2596 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-ADJ	TI	获取价格	SIMPLE SWITCHER Power Converter
LM2596T-ADJ	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596T-ADJ	UMW	获取价格	DC-DC芯片

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