LM2770SD-12157/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2770SD-12157/NOPB is a programmable charge pump DC-DC converter manufactured by Texas Instruments, formerly National Semiconductor. It operates within an input voltage range of 2.7V to 5.5V and delivers a maximum output current of 250mA. The device utilizes a switching frequency of 700kHz and features a single positive output configuration. It is housed in a 10-WSON (3x3) package with a bare pad for thermal dissipation. The component supports an operating temperature range from -30°C to 85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a charge pump topology for efficient step-down voltage conversion
• Allows programmable output voltage settings via external components
• Includes internal switching controller optimized for compact designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring low power regulation
• Battery-powered systems needing stable voltage levels
• Embedded circuits utilizing single-cell lithium-ion or alkaline batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '12157' against official datasheets to confirm the exact output voltage configuration, as variations exist within the LM2770 family. Ensure compatibility with the 10-WSON package dimensions and thermal requirements during integration. Confirm availability status through authorized channels, noting that some variants may be discontinued.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a small form factor and programmable output are required for low-current applications. Consider the 700kHz switching frequency for balancing efficiency and component size. Evaluate the thermal performance of the WSON package relative to the expected load conditions and ambient temperature constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2770 series of charge pump regulators. It represents a transition from National Semiconductor to Texas Instruments following corporate acquisition. The NOPB suffix indicates lead-free composition and RoHS compliance, aligning with modern environmental standards for electronic manufacturing.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct substitutes such as the LM2770SD-1215/NOPB if the specific voltage setting matches. Verify pinout compatibility and thermal characteristics before substituting with other charge pump regulators from different manufacturers.