LM2595S-ADJ Buck Converter Adjustable 1.23V-37V Output 3A Load 150kHz Frequency 75% Efficiency Thermal Protection Low Dropout Wide 4.5V-40V Input Compact TO-263 Package

Features

• 3.3-V, 5-V, 12-V, and Adjustable Output Versions

• Adjustable Version Output Voltage Range, 1.2 V to 37 V ±4% Maximum Over Line and Load Conditions

• Available in TO-220 and TO-263 Surface-Mount Packages

• Ensured 1-A Output Load Current

• Input Voltage Range Up to 40 V

• Requires Only 4 External Components

• Excellent Line and Load Regulation Specifications

• 150-kHz Fixed-Frequency Internal Oscillator

• TTLShutdown Capability

• LowPower Standby Mode, IQ, Typically 85 μA

• High Efficiency

• UsesReadily Available Standard Inductors

• Thermal Shutdown and Current-Limit Protection

Applications

• Simple High-Efficiency Step-Down (Buck) Regulator

• Efficient Preregulator for Linear Regulators

• On-Card Switching Regulators

• Positive-to-Negative Converter

Description

The LM2595 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed frequency oscillator.

The LM2595 series operates at a switching frequency of 150 kHz, thus allowing smaller-sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface-mount package. Typically, for output voltages less than 12 V, and ambient temperatures less than 50°C, no heat sink is required.

INFORMATION

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