MAX8878EUK25

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MAX8878EUK25+T is a low-noise, low-dropout linear regulator manufactured by Analog Devices Inc./Maxim Integrated. It operates from an input voltage range of 2.5V to 6.5V and delivers up to 150mA of output current. The device features a fixed preset output voltage of 2.5V with ±1.4% accuracy. It utilizes an internal P-channel MOSFET pass transistor to maintain a typical quiescent supply current of 100µA, independent of load conditions. Key electrical characteristics include a typical dropout voltage of 165mV at 150mA and low output noise of 30µVRMS.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Features an internal P-channel MOSFET pass transistor for low quiescent current operation
• Includes logic-controlled shutdown mode with 10nA standby current consumption
• Provides active auto-discharge function to ground during shutdown state
• Integrates reverse battery protection and thermal-shutdown safeguards

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Cellular Telephones
• Cordless Telephones
• PCMCIA Cards
• Hand-Held Instruments

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'EUK25' corresponds to the required 2.5V fixed output voltage and SOT-23-5 regular package configuration. Confirm that the '+T' designation aligns with the intended reel packaging format. Ensure compatibility with the -40°C to +85°C operating temperature range specified for this variant before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a low-noise LDO with high efficiency under light loads is required. The P-channel architecture ensures constant quiescent current regardless of dropout, making it suitable for battery-powered systems. Verify that the 150mA maximum output current meets the application's peak demand requirements and that the 2.5V preset voltage matches the target rail without needing external adjustment resistors.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the MAX8877/MAX8878 family of low-noise, low-dropout linear regulators. These devices are designed as pin-compatible replacements for industry-standard '2982 regulators while offering improved performance metrics such as lower dropout voltage and reduced noise. The MAX8878 variant specifically distinguishes itself from the MAX8877 through the inclusion of an auto-discharge feature on the output pin.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The datasheet explicitly states these devices are pin-compatible with the industry-standard '2982 regulator.