MAX8878EUK33+

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

The MAX8878EUK33+T is a low-noise, low-dropout linear regulator from Analog Devices/Maxim Integrated. It operates with an input voltage range of 2.5V to 6.5V and delivers up to 150mA output current. The device provides a fixed preset output voltage of 3.3V with ±1.4% accuracy. Typical dropout voltage is 55mV at 50mA and 165mV at 150mA. Operating supply current is 100µA, while shutdown current is 10nA. Output noise is typically 30µVRMS. It features thermal overload, short-circuit protection, reverse battery protection, and an auto-discharge function in shutdown mode.

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

• Pin-compatible with the industry-standard '2982 for easy upgrades
• Low output noise of 30µVRMS for sensitive analog circuits
• Logic-controlled shutdown mode with 10nA standby current
• Auto-discharge function actively discharges output during shutdown

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 ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with existing PCB layouts due to the '2982 pinout. Confirm that the fixed 3.3V output meets system requirements before procurement. Check for RoHS compliance status if required by project specifications.

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

Select this component when a low-noise LDO with '2982 pinout compatibility is required. It is suitable for battery-powered applications due to its low quiescent current. Consider the auto-discharge feature if rapid output discharge upon shutdown is necessary. Verify capacitor selection guidelines for stability across the operating temperature range.

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

The MAX8878 belongs to the MAX8877/MAX8878 family of low-noise, low-dropout linear regulators. These devices are designed primarily for battery-powered applications requiring high efficiency and low noise. The MAX8878 distinguishes itself from the MAX8877 by including an auto-discharge function on the output pin when placed in shutdown mode.

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

MAX8877EUK33+T

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

What is the difference between the MAX8877 and MAX8878?

The MAX8878 includes an auto-discharge function that actively discharges the output voltage to ground when the device is placed in shutdown mode. The MAX8877 does not have this feature.

How does the MAX8878 handle reverse battery conditions?

The device features reverse battery protection that limits reverse supply current to 1mA when either the input or shutdown pin falls below ground, preventing device damage.