MAX6003EUR-T

Overview

The MAX6003EUR-T is a micropower, low-dropout series voltage reference from the MAX6001–MAX6005 family. It provides a fixed output of 3.0V in a compact SOT-23-3 package. The device features a maximum initial accuracy of 1% and a temperature coefficient of 100ppm/°C. Quiescent supply current is limited to 45µA with minimal variation relative to input voltage changes. It supports capacitive loads up to 2.2nF without external compensation.

Feature Summary

• Eliminates the need for an external resistor by integrating series-mode regulation, offering power-saving advantages over conventional shunt references.
• Internally compensated design ensures stability with capacitive loads ranging from 0 to 2.2nF, saving board area in space-critical applications.
• Micropower operation with quiescent supply current virtually independent of supply voltage, maximizing efficiency across wide input ranges.

Applications

• Portable and battery-powered equipment
• Notebook computers
• PDAs, GPSs, and digital multimeters (DMMs)
• Cellular phones and pagers

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm that the component is the non-rohs version if lead-free compliance is not required, as '+T' variants exist. Ensure the input voltage source can provide transient currents during turn-on to guarantee reliable startup under minimum dropout conditions.

Selection Notes

Select this part for cost-sensitive designs requiring low power dissipation in 3V systems. It is suitable where wide supply voltage variations occur but board space is limited. Consider the 100ppm/°C temperature coefficient and 1% initial accuracy against stricter precision requirements found in other family members.

Part Context

Part of the MAX6001–MAX6005 family of low-cost, low-power, low-dropout SOT23-3 voltage references. Designed to combine the cost advantage of shunt references with the power efficiency of series references. Manufactured by Analog Devices / Maxim Integrated.

Replacement Considerations

Other members of the MAX6001–MAX6005 family share identical pinouts and functionality but offer different fixed output voltages (1.25V, 2.5V, 4.096V, 5.0V). Verify that the 3.0V output matches the system requirement before substituting.

FAQ

Does the MAX6003 require an external capacitor for stability?

No, the device is internally compensated and stable with capacitive loads from 0 to 2.2nF. An external capacitor is optional and primarily used to improve transient response.

How does the supply current behave with respect to input voltage?

The quiescent supply current is virtually independent of the supply voltage, varying by only 0.8µA/V across the operating range.