LM2771SD

Voltage Regulators - DC DC Switching Regulators Overview

The LM2771SD is a low-ripple, inductorless switched capacitor step-down DC/DC converter manufactured by Texas Instruments. It operates with an input voltage range of 2.7V to 5.5V and provides a fixed output voltage of 1.5V. The device delivers a maximum output current of 250mA. It features adjustable current limiting and operates within an ambient temperature range of -30°C to 110°C. The switching frequency ranges from 800kHz to 1400kHz. The component is housed in a 10-WSON package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Inductorless charge pump topology for low-ripple performance
• Adjustable current limit protection
• Extended operating temperature range suitable for industrial applications

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring efficient step-down conversion
• Space-constrained designs eliminating bulky inductors
• Low-noise power supply stages for sensitive analog circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., SD vs SDX) against the official datasheet to confirm packaging type and reel specifications. Ensure the NOPB designation is present if lead-free compliance is required. Cross-reference the exact part number with Texas Instruments documentation to validate availability status and pinout configuration before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when inductorless operation is preferred to reduce board space and electromagnetic interference. It is suitable for applications requiring a fixed 1.5V output from a 2.7V to 5.5V source. Consider the 250mA current limit and thermal performance in the 10-WSON package when designing the thermal management strategy for high ambient temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2771 belongs to Texas Instruments' family of switched capacitor converters. It serves as an alternative to traditional inductive buck converters where size and noise are critical constraints. The device integrates the necessary switches and capacitors internally, simplifying the external component count compared to inductor-based solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Officially documented substitutes include LM2771SD/NOPB and LM2771SDX/NOPB. Verify that these variants maintain identical electrical characteristics and pin compatibility before substitution.