MAX5391LATE+T

Overview

The MAX5391LATE+T is a dual 256-tap volatile digital potentiometer in a 16-pin TQFN-EP package with 10kΩ end-to-end resistance. It operates from a single +1.7V to +5.5V supply and features an SPI-compatible interface. The device includes two independent voltage dividers, each with 256 linear taper positions. Key electrical characteristics include a low 35ppm/°C temperature coefficient, ±25% end-to-end tolerance, and a maximum wiper resistance of 200Ω. Quiescent supply current is 12μA at 1.7V and 27μA at 5.5V. The internal charge pump ensures stable operation down to the minimum supply voltage.

Feature Summary

• Dual 256-Tap Linear Taper Digital Potentiometers
• Single +1.7V to +5.5V Supply Operation
• SPI-Compatible Interface
• Low 12μA Quiescent Supply Current

Applications

• Low-Voltage Battery Applications
• Portable Electronics
• Mechanical Potentiometer Replacement
• Offset and Gain Control
• Adjustable Voltage References/Linear Regulators

Procurement Notes

Verify the component status as the MAX5391 family may be discontinued or subject to limited availability. Confirm that the specific ordering suffix matches the required package and resistance value. Ensure compliance with RoHS standards for lead-free packaging. Check for alternative sources if original manufacturer stock is unavailable.

Selection Notes

Select this part for applications requiring dual independent digital potentiometers in a compact surface-mount package. The 10kΩ resistance value is suitable for moderate impedance circuits. Verify that the system supports SPI communication and that the volatile memory behavior aligns with the application's power-loss requirements.

Part Context

This component belongs to the MAX5391/MAX5393 family of dual 256-tap digital potentiometers. The MAX5391 variant utilizes a 16-pin TQFN-EP package, while the MAX5393 uses a 14-pin TSSOP package. Both families offer identical electrical performance but differ in physical footprint and pin configuration.

Replacement Considerations

Direct replacements within the same family include MAX5391MATE+T (50kΩ) and MAX5391NATE+T (100kΩ). For different packages, the MAX5393 series offers equivalent functionality in a 14-pin TSSOP format.