MAX5005ACUB+

Overview

The MAX5005ACUB+ is a low-dropout linear regulator designed for USB applications, manufactured by Analog Devices Inc. under the Maxim Integrated brand. It provides a fixed 3.3 V output with a maximum load current of 150 mA. The device operates within an input voltage range of 4 V to 5.5 V and features a typical dropout voltage of 300 mV at full load. It includes integrated protection mechanisms such as a 15 kV TVS diode and a power-on reset circuit. The component is housed in a 10-lead UMAX or uSOP surface-mount package and is rated for operation between 0°C and +70°C.

Feature Summary

• Integrates a 15 kV electrostatic discharge (ESD) protection diode on the input line to safeguard against transient events common in USB interfaces.
• Includes a built-in power-on reset generator that ensures proper system initialization by monitoring supply voltage levels.
• Delivers a stable fixed 3.3 V output with high accuracy, suitable for powering sensitive digital logic and peripheral devices.

Applications

• USB port power management circuits
• Portable electronic device power supplies
• Embedded systems requiring regulated 3.3 V rails

Procurement Notes

Verify the specific suffix and tape-and-reel versus tube packaging options available from authorized distributors, as availability may vary. Confirm RoHS compliance status and lead times directly with the manufacturer or certified suppliers due to potential supply constraints. Ensure the ordering part number matches the required temperature grade and package variant for your design.

Selection Notes

Select this component when a compact solution is needed for USB-powered designs requiring integrated ESD protection and reset functionality. Consider the 150 mA current limit and 300 mV dropout voltage to ensure adequate headroom for your specific input voltage and load conditions. Verify that the 10-lead UMAX package fits within your board space constraints compared to alternative packages like MSOP.

Part Context

This part belongs to the MAX5005/MAX5006 family of USB LDO regulators. These components are engineered specifically for portable applications where space and power efficiency are critical. The family shares similar electrical characteristics but may differ in specific integration features or package options, serving as a standard reference for low-noise, low-quiescent current regulation in mobile electronics.

Replacement Considerations

The MAX5005BCUB+ is a documented substitute within the same series, offering identical electrical specifications and pinout compatibility. Verify that any alternative replacement maintains the same 15 kV TVS rating and reset threshold requirements to ensure functional equivalence in existing designs.