LM2661MX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2661MX/NOPB is a synchronous step-down DC-DC converter manufactured by Texas Instruments. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 3.3 V. The device delivers a maximum output current of 100 mA. It supports switching frequencies of 5 kHz and 40 kHz, allowing for optimization between efficiency and component size. The unit functions within an ambient temperature range of -40 °C to +85 °C and is housed in a SOT-23-5 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for improved efficiency
• Fixed 3.3 V output configuration
• Selectable switching frequency options

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices
• Embedded systems requiring low-power regulation
• General-purpose 3.3 V power supply circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical specifications. Ensure the ordering information matches the required switching frequency setting and package variant. Cross-reference the datasheet revision date to validate technical parameters before integration into design projects.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact, low-current synchronous buck regulator is required for 3.3 V applications. The choice depends on the need for integrated synchronous rectification to maximize efficiency at light loads. Consider the available switching frequency options to balance electromagnetic interference requirements against passive component size constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2661 family of synchronous step-down converters from Texas Instruments. It is designed as a cost-effective solution for space-constrained applications. The device integrates the high-side and low-side switches, reducing the external component count compared to non-synchronous alternatives.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the manufacturer's replacement guide for verified equivalents. Verify that any substitute maintains the same 3.3 V output, 100 mA current rating, and SOT-23-5 footprint.