LM2670T-3.3

Voltage Regulators - DC DC Switching Regulators Overview

The LM2670T-3.3 is a SIMPLE SWITCHER high-efficiency 3A step-down voltage regulator manufactured by Texas Instruments. It integrates a synchronous rectifier and operates with an internal oscillator at a fixed switching frequency of 260 kHz. The device accepts input voltages ranging from 4.5 V to 40 V and provides a fixed regulated output of 3.3 V. It supports continuous output currents up to 3 A and includes comprehensive protection features such as thermal shutdown and current limiting. The component is housed in a 14-pin VSON package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous rectifier for improved efficiency compared to standard diode-based designs
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for robust operation
• Utilizes a fixed 260 kHz switching frequency to minimize external component size

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm the '3.3' designation corresponds to the fixed 3.3 V output variant. Ensure compatibility with the 14-pin VSON footprint during PCB layout. Cross-reference the manufacturer's latest datasheet revision to confirm pinout and electrical specifications remain unchanged.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a fixed 3.3 V output from a wide input range up to 40 V. The integrated synchronous rectifier makes it suitable for space-constrained designs where efficiency is critical. Consider the 260 kHz switching frequency when designing the external inductor and capacitor values to balance transient response and ripple performance against component size constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2670 family of SIMPLE SWITCHER regulators, which are designed for high-efficiency DC-DC conversion. The family typically includes variants with different fixed output voltages and adjustable versions. The LM2670 series is characterized by its ability to deliver up to 3 A of load current while maintaining high efficiency across a broad input voltage range.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include other LM2670 variants with matching output voltages and packages, such as LM2670SD-3.3/NOPB. Verify that any replacement maintains the same 14-pin VSON footprint and electrical characteristics, including the 3 A current rating and 260 kHz switching frequency.