MAX8877EZK28+T

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

The MAX8877EZK28+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 provides a fixed preset output voltage of 2.8V with ±1.4% accuracy. It features a typical dropout voltage of 55mV at 50mA and 165mV at 150mA load. Quiescent supply current is 85µA no-load and 100µA under full load. Output noise is typically 30µVRMS. The unit includes logic-controlled shutdown with 10nA standby current, thermal overload protection, short-circuit protection, and reverse battery protection. It is housed in a thin SOT-23-5 package.

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

• Pin-compatible with industry-standard '2982 regulators for easy design upgrades
• Internal P-channel MOSFET pass transistor ensures low quiescent current independent of load
• Logic-controlled shutdown mode reduces supply current to 10nA
• Integrated reverse battery protection prevents damage from polarity reversal

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

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

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

Verify the specific suffix +T indicates tape-and-reel packaging when sourcing. Confirm the EZK designation corresponds to the thin SOT-23-5 package variant rather than the standard thickness. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing standards. Cross-reference the manufacturer part number with official distributor catalogs to confirm availability status before finalizing procurement plans.

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

Select this component for battery-powered applications requiring stable regulation with minimal power consumption. The low dropout characteristic allows operation near the end-of-life battery voltage. Verify that the required output voltage matches the factory-set 2.8V option within the available 100mV increments. Ensure the PCB layout accommodates the thermal dissipation needs of the thin SOT-23-5 package under maximum load conditions.

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

This device belongs to the MAX8877/MAX8878 family of low-noise, low-dropout linear regulators. The MAX8877 variant lacks the auto-discharge feature found in the MAX8878. Both share identical pinouts and electrical characteristics except for the shutdown behavior. The family is designed primarily for portable electronics where space and power efficiency are critical constraints.

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

Direct replacements include other MAX8877 variants with different preset voltages (e.g., MAX8877EUK33+T for 3.3V). Ensure substitute parts maintain the same thin SOT-23-5 footprint and pin configuration for board compatibility.