MAX8882EUTA5

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

The MAX8882EUTA5 is a dual low-noise, low-dropout linear regulator from Analog Devices/Maxim Integrated. It operates from an input voltage range of +2.5V to +6.5V and provides two fixed positive outputs: VOUTA at 3.3V and VOUTB at 1.8V. Each regulator delivers up to 160mA of continuous output current with a maximum dropout voltage of 144mV at 80mA load. The device maintains a low supply current of 165µA (both LDOs on) independent of load conditions. Key electrical specifications include 40µVRMS output noise for the MAX8882 variant and 62dB PSRR at 100Hz. It features short-circuit protection, thermal shutdown, and a single shutdown control input.

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

• Dual integrated regulators in a miniature SOT23-6 package
• Low quiescent current consumption of 165µA regardless of load
• Internal P-channel MOSFET pass transistors for extended battery life
• Integrated short-circuit and thermal-overload protection

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

• Microprocessor and DSP core or I/O power supplies
• Cellular and PCS telephones
• PDAs and palmtop computers
• Notebook computers
• Digital cameras

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as datasheets may indicate variations based on production date. Ensure proper handling procedures are followed due to surface-mount packaging. Check for obsolescence notices or lifecycle changes prior to final design implementation.

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

Select this component when space-constrained designs require dual regulated rails from a single package. Suitable for battery-powered systems needing stable 3.3V and 1.8V rails. Verify input voltage stays within 2.5V to 6.5V limits. Consider thermal dissipation requirements if operating near maximum current loads or high ambient temperatures.

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

Part of the MAX8882/MAX8883 family of dual low-dropout regulators. Shares pinout and functional architecture with MAX8883, which offers independent shutdown controls instead of a single shared shutdown pin. Both variants utilize identical SOT23-6 packaging and internal circuitry differences primarily relate to control logic configuration.

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

MAX8882EUTQ5 provides alternative fixed outputs of 2.5V and 1.8V. MAX8882EUTGG offers dual 3.0V outputs. MAX8883EUTA5 serves as a functional equivalent with independent shutdown inputs rather than a single shared shutdown pin. All replacements maintain identical pin configurations and electrical characteristics.

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

What is the function of the BP pin on the MAX8882?

The BP pin is a reference noise bypass terminal. Connecting a 0.01µF ceramic capacitor to this pin creates a lowpass filter that reduces output voltage noise to 40µVRMS.

How does the shutdown mechanism work on the MAX8882?

Driving the SHDN pin low shuts down both regulators and the internal reference, reducing supply current to 10nA. Connecting SHDN to IN or a logic-high level enables normal operation.

What type of capacitors are recommended for stability?

Ceramic capacitors are optimized for these regulators. Tantalum capacitors are not recommended. Use 2.2µF input/output capacitors, potentially larger values like 4.7µF or 10µF depending on dielectric type and temperature range.