LM2575T-ADJ

Product Summary

The LM2575T-ADJ is a monolithic integrated circuit 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. The LM2575T-ADJ is designed to minimize the number of external components to simplify the power supply design. Since the LM2575T-ADJ 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 LM2575T-ADJ regulator is so low, that no heatsink is required or its size could be reduced dramatically. Applications include 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 and Power Supply for Battery Chargers.

Parametrics

LM2575T-ADJ absolute maximum ratings: (1)Maximum Supply Voltage: 45v; (2)Output Voltage to Ground (Steady-State): -1v; (3)Storage Temperature Range: 65 to +150℃; (4)Minimum ESD Rating: 3.0 kV; (5)Lead Temperature (Soldering, 10 s): 260℃; (6)Maximum Junction Temperature: 150℃

Features

LM2575T-ADJ features: (1)3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions; (2)Adjustable Version Output Voltage Range of 1.23 V to 37 V ±4% Maximum Over Line and Load Conditions; (3)Guaranteed 1.0 A Output Current; (4)Wide Input Voltage Range: 4.75 V to 40 V; (5)Requires Only 4 External Components; (6)52 kHz Fixed Frequency Internal Oscillator; (7)TTL Shutdown Capability, Low Power Standby Mode; (8)High Efficiency; (9)Uses Readily Available Standard Inductors; (10)Thermal Shutdown and Current Limit Protection; (11)Moisture Sensitivity Level (MSL) Equals 1; (12)Pb-Free Packages are Available

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