Microchip Technology

MCP45HV51-502E/ST  

Digital Potentiometers

MCP45HV51-502E/ST Description

The MCP45HV51-502E/ST from Microchip Technology is a high-voltage, digitally programmable potentiometer designed for precision analog control in demanding applications. This 5kΩ, 256-tap linear-taper device features an I2C interface for digital adjustment, offering superior flexibility in system design. With a wide supply voltage range (1.8V–5.5V logic, 10V–36V or ±5V–±18V analog), it supports mixed-voltage environments, making it ideal for industrial and automotive systems. The volatile memory ensures dynamic recalibration, while the ±20% resistance tolerance and 100ppm/°C temperature coefficient provide stable performance across operating conditions. Packaged in a 14-TSSOP, it is suited for space-constrained PCB designs.

MCP45HV51-502E/ST Features

• High-Voltage Operation: Supports up to ±18V bipolar or 36V unipolar supplies, enabling use in power-sensitive applications.
• I2C Interface: Allows daisy-chaining with selectable addresses, simplifying multi-channel designs.
• Integrated Mute Function: Enhances audio and signal processing by enabling quick wiper disconnection.
• Low Wiper Resistance (145Ω typ): Minimizes signal attenuation in precision circuits.
• Robust Construction: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory compliance.
• Industrial-Grade Reliability: MSL 1 (Unlimited) rating guarantees longevity in harsh environments.

MCP45HV51-502E/ST Applications

• Industrial Automation: Calibration of sensor bridges, motor control, and programmable gain amplifiers.
• Audio Systems: Volume control, tone adjustment, and mute functions in high-voltage audio amplifiers.
• Test & Measurement Equipment: Dynamic resistance tuning for lab instruments and calibration tools.
• Automotive Electronics: HVAC controls, lighting dimming, and battery management systems.
• Power Supplies: Feedback loop adjustment in switching regulators or programmable voltage references.

Conclusion of MCP45HV51-502E/ST

The MCP45HV51-502E/ST stands out for its high-voltage tolerance, precision digital control, and compact form factor, making it a versatile solution for analog signal conditioning. Its I2C interface, mute feature, and wide supply range address critical needs in industrial, automotive, and audio applications. Engineers benefit from its low wiper resistance and daisy-chaining capability, reducing board space and BOM complexity. For systems requiring reliable, digitally adjustable resistance under high voltages, this potentiometer delivers exceptional performance and design flexibility.

MCP45HV51-502E/ST Documents

Download datasheets and manufacturer documentation for MCP45HV51-502E/ST

Datasheets :

MCP45HVx1      

PCN Packaging :

Packing Changes 10/Oct/2016       Label and Packing Changes 23/Sep/2015      

PCN Design/Specification :

MCP45HVX1 Data Sheet 30/Jun/2023       Errata/Datasheet Update 13/Jul/2015      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH