LM27762DSST

Voltage Regulators - DC DC Switching Regulators Overview

The LM27762DSST is a low-noise positive and negative output charge pump regulator manufactured by Texas Instruments. It operates within an input voltage range of 2.7 V to 5.5 V, delivering an adjustable output voltage between 1.5 V and 5 V with a maximum output current of 250 mA. The device features a typical quiescent current of 390 uA and a shutdown current of 0.5 uA. It utilizes a 12-WSON (3x2) surface-mount package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Generates low-noise adjustable positive supply voltage between 1.5V and 5V and a negative supply voltage between -1.5V and -5V
• Inverting charge pump followed by negative LDO for stable negative rail generation
• 2MHz low-noise fixed-frequency operation reduces output impedance and voltage ripple
• Includes power good pin (active low), current limit, and thermal protection

Voltage Regulators - DC DC Switching Regulators Applications

• Hi-Fi audio headphone amplifiers
• Operational amplifier power biasing
• Powering data converters
• Wireless communication systems
• Interface power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'DSST' corresponds to the 12-WSON package and reel/cut-tape availability. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the ordering part number matches the exact manufacturer designation to avoid functional discrepancies in dual-output charge pump configurations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring simultaneous positive and negative rails from a single low-voltage source. It is suitable for applications demanding ultra-low noise performance, such as precision analog signal chains. Consider the 250 mA current limit and dropout voltages when sizing external capacitors and ensuring adequate headroom for the target load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM27762 series of power management ICs designed for portable electronics. It integrates a switched-capacitor inverter with a subsequent low-dropout regulator to create a compact solution for generating dual polarities. The design minimizes external component count while maintaining high efficiency and low electromagnetic interference through fixed-frequency switching.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM27762DSSR is listed as a parameter-equivalent substitute by the manufacturer.