LM2676S-ADJ, 3A Adjustable Step-Down Voltage Regulator, TO-263-7

The LM2676S-ADJ is a monolithic integrated circuit designed for step-down (buck) switching regulator applications. It integrates a 3A N-channel MOSFET switch and associated control circuitry, providing all the necessary functions for efficient power conversion. With its adjustable output voltage capability and wide input voltage range, the LM2676S-ADJ offers design flexibility for various power supply applications. Its fixed 260kHz switching frequency and comprehensive protection features ensure reliable and predictable performance. The LM2676S-ADJ is suitable for applications including simple high-efficiency step-down regulators, efficient pre-regulators for linear regulators, on-card switching regulators, and battery chargers.​

Key Features:

• Adjustable Output Voltage: Provides an output voltage range from 1.23V to 37V, offering flexibility for various applications.​
• High Output Current Capability: Delivers up to 3A of continuous output current with excellent line and load regulation.​
• Wide Input Voltage Range: Operates from 8V to 40V, accommodating a broad spectrum of power sources.​
• Fixed 260kHz Switching Frequency: Ensures predictable performance and simplifies filter design.​
• Comprehensive Protection Features: Includes thermal shutdown, current limiting, and undervoltage lockout for robust operation.​
• Low Standby Current: Features a low standby current of approximately 50 µA, enhancing energy efficiency in standby mode.​

Additional Specifications:

• Package Type: TO-263-7
• Supply Voltage: 8-40V
• Current: 3A
• Type: Step-Down Buck Voltage Regulator