LM2575:1.0 A, 52 kHz Buck Switching Regulator

The LM2575 series of Buck Switching 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 loadwith excellent line and load regulation. These devices are available in fixedoutput voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. This Buck Switching Regulator is designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2575 are offered by several different inductor manufacturers. 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 0C to 125C). External shutdown is included, featuring 80 uA typical standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

技术特性

3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
Adjustable Version Output Voltage Range of 1.23 V to 37 V ±4%
Maximum Over Line and Load Conditions
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
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
Moisture Sensitivity Level (MSL) Equals 1
Pb−Free Packages are Available*

应用

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
Power Supply for Battery Chargers

封装图 PACKAGE DIMENSIONS

订购信息 Ordering Information

产品

状况

Compliance

具体说明

封装

MSL*

容器

预算价格 (1千个数量的单价）

类型

外形

类型

数量

LM2575D2T-012G

Last Shipments

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 12 V

D2PAK-5

936A-02

Tube

LM2575D2T-015G

Last Shipments

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 15 V

D2PAK-5

936A-02

Tube

LM2575D2T-12R4G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 12 V

D2PAK-5

936A-02

Tape and Reel

800

$1.72

LM2575D2T-15R4G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 15 V

D2PAK-5

936A-02

Tape and Reel

800

$1.72

LM2575D2T-3.3G

Last Shipments

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 3.3 V

D2PAK-5

936A-02

Tube

LM2575D2T-3.3R4G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 3.3 V

D2PAK-5

936A-02

Tape and Reel

800

$1.72

LM2575D2T-5G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 5.0 V

D2PAK-5

936A-02

Tube

$1.72

LM2575D2T-5R4G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 5.0 V

D2PAK-5

936A-02

Tape and Reel

800

$1.72

LM2575D2T-ADJG

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, Adjustable 1.23 V to 37 V

D2PAK-5

936A-02

Tube

$1.72

LM2575D2T-ADJR4G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, Adjustable 1.23 V to 37 V

D2PAK-5

936A-02

Tape and Reel

800

$1.72

LM2575T-12G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 12 V

TO-220-5

314D-04

Tube

$1.5333

LM2575T-15G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 15 V

TO-220-5

314D-04

Tube

$1.5333

LM2575T-3.3G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 3.3 V

TO-220-5

314D-04

Tube

$1.5333

LM2575T-5G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 5.0 V

TO-220-5

314D-04

Tube

$1.5333

LM2575T-ADJG

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, Adjustable 1.23 V to 37 V

TO-220-5

314D-04

Tube

$1.5333

LM2575TV-005G

Last Shipments

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator

TO-220-5

314B-05

Tube

LM2575TV-012G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 12 V

TO-220-5

314B-05

Tube

$1.5333

LM2575TV-15G

Lifetime

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 15 V

TO-220-5

314B-05

Tube

$1.5333

LM2575TV-3.3G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 3.3 V

TO-220-5

314B-05

Tube

$1.5333

LM2575TV-5G

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 5.0 V

TO-220-5

314B-05

Tube

$1.5333

LM2575TV-ADJG

Active

Pb-free

Halide free

1.0 A, 52 kHz Buck Switching Regulator, 1.23 V to 37 V

TO-220-5

314B-05

Tube

$1.5333

数据资料DataSheet下载

概述	文档编号/大小	版本
1.0 A, 52 kHz Buck Switching Regulator	LM2575/D (94.0kB)	2