MAX1818EUT50#TG16

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

The MAX1818EUT50#TG16 is a low-dropout linear regulator from Analog Devices/Maxim Integrated. It operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with a typical 120mV dropout voltage at full load. The output voltage is preset at 5.0V with ±1% accuracy, or adjustable from 1.25V to 5.0V using an external resistive divider. Key electrical parameters include a ground pin current of 125µA (typical) and a shutdown current of 0.1µA. The device features thermal overload protection, short-circuit protection, and a power-okay open-drain output.

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

• Internal P-channel pass transistor enables low quiescent current independent of load conditions
• Dual Mode operation supports both factory-preset voltages and adjustable outputs via external resistors
• Integrated active-low open-drain reset output indicates when regulation is lost
• Includes thermal shutdown and output current limit protection for fault tolerance

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

• Notebook Computers
• Cellular and Cordless Telephones
• Personal Digital Assistants (PDAs)
• Base Stations
• USB Hubs

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

Verify the specific suffix '50' confirms the 5.0V preset configuration. Confirm RoHS compliance status indicated by the '#' symbol in the part number. Check manufacturer documentation for production lifecycle status as this component may be subject to discontinuation notices. Ensure soldering profiles adhere to industry standards due to unique packaging thermal constraints.

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

Select this regulator for portable battery-operated equipment requiring stable power delivery up to 500mA. The low dropout characteristic extends battery life by allowing operation closer to the minimum cell voltage. Verify input voltage does not exceed 5.5V and ensure adequate copper area on the PCB for thermal dissipation within the 800mW package limit.

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

This component belongs to the MAX1818 series of low-dropout linear regulators designed primarily for battery-powered applications. The series offers various preset output voltages and adjustable options within a miniature 6-pin SOT23 package. It utilizes Dual Mode technology to switch between internal feedback for preset modes and external feedback for adjustable configurations.

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

Consult the official datasheet selector guide for alternative part numbers within the MAX1818 family that offer different preset voltages or adjustable settings. Verify pin compatibility and thermal characteristics before substituting with other LDO regulators.