Datasheet > LM2575T-12

LM2575T-12

更新时间： 2024-09-15 22:57:31

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		稳压器
页数	文件大小	规格书
28页	384K
描述
EASY SWITCHERE⑩ 1.0 A STEP-DOWN VOLTAGE REGULATOR

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LM2575T-12 数据手册

Order this document by LM2575/D

EASY SWITCHER

1.0 A STEP–DOWN

VOLTAGE REGULATOR

The LM2575 series of regulators are monolithic integrated circuits ideally

suited for easy and convenient design of a step–down switching regulator

(buck converter). All circuits of this series are capable of driving a 1.0 A load

with excellent line and load regulation. These devices are available in fixed

output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version.

These regulators were designed to minimize the number of external

components to simplify the power supply design. Standard series of

inductors optimised for use with the LM2575 are offered by several different

inductor manufacturers.

SEMICONDUCTOR

TECHNICAL DATA

Since the LM2575 converter is a switch–mode power supply, its efficiency

is significantly higher in comparison with popular three–terminal linear

regulators, especially with higher input voltages. In many cases, the power

dissipated by the LM2575 regulator is so low, that no heatsink is required or

its size could be reduced dramatically.

The LM2575 features include a guaranteed ±4% tolerance on output

voltage within specified input voltages and output load conditions, and ±10%

on the oscillator frequency (±2% over 0°C to 125°C). External shutdown is

included, featuring 80 µA typical standby current. The output switch includes

cycle–by–cycle current limiting, as well as thermal shutdown for full

protection under fault conditions.

T SUFFIX

PLASTIC PACKAGE

CASE 314D

Pin 1. V

2. Output

3. Ground

4. Feedback

5. ON/OFF

Features

TV SUFFIX

PLASTIC PACKAGE

• 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions

CASE 314B

• Adjustable Version Output Voltage Range of 1.23 V to 37 V ±4%

Maximum Over Line and Load Conditions

Heatsink surface

connected to Pin 3.

• Guaranteed 1.0 A Output Current

• Wide Input Voltage Range: 4.75 V to 40 V

• Requires Only 4 External Components

• 52 kHz Fixed Frequency Internal Oscillator

• TTL Shutdown Capability, Low Power Standby Mode

• High Efficiency

D2T SUFFIX

PLASTIC PACKAGE

CASE 936A

(D PAK)

• Uses Readily Available Standard Inductors

• Thermal Shutdown and Current Limit Protection

Heatsink surface (shown as terminal 6 in case outline

drawing) is connected to Pin 3.

Applications

• Simple and High–Efficiency Step–Down (Buck) Regulators

• Efficient Pre–Regulator for Linear Regulators

• On–Card Switching Regulators

• Positive to Negative Converters (Buck–Boost)

• Negative Step–Up Converters

DEVICE TYPE/NOMINAL OUTPUT VOLTAGE

LM2575–3.3

LM2575–5

3.3 V

5.0 V

LM2575–12

LM2575–15

LM2575–Adj

12 V

15 V

1.23 V to 37 V

• Power Supply for Battery Chargers

ORDERING INFORMATION

Operating

Temperature Range

Device

Package

LM2575T–**

Straight Lead

Vertical Mount

Surface Mount

LM2575TV–** T = –40° to +125°C

LM2575D2T–**

** = Voltage Option, ie. 3.3, 5.0, 12, 15 V and

** =\Adjustable Output.

Motorola, Inc. 1999

Rev 2, 07/1999

MOTOROLA ANALOG IC DEVICE DATA

12 3 4 5 6 7...28

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与LM2575T-12相关器件

型号	品牌	获取价格	描述	数据表
LM2575T-12/LB03	TI	获取价格	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575T-12/LF03	TI	获取价格	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575T-12/NOPB	TI	获取价格	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator
LM2575T-12EP	TI	获取价格	暂无描述
LM2575T-12FLOWLB03	NSC	获取价格	IC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5, TO-220, 5 PIN, Switching R
LM2575T-12G	ROCHESTER	获取价格	3.2A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PSFM5, LEAD FREE, TO-220, 5 PIN
LM2575T-12-H	SEMTECH	获取价格	Voltage-Mode SMPS Controller
LM2575T-12-HT	SEMTECH	获取价格	暂无描述
LM2575T-12T	SEMTECH	获取价格	Switching Regulator, Voltage-mode, 3.2A, 62kHz Switching Freq-Max, PSFM5, STRAIGHT, TO-220
LM2575T-12-V	SEMTECH	获取价格	Voltage-Mode SMPS Controller

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