UPC1944T-E1-A

Overview

The UPC1944T-E1-A is a shunt precision voltage reference manufactured by Renesas Electronics. It operates within a supply voltage range of 1.29 V to 24 V and delivers an output voltage between 2.16 V and 24 V. The device features an initial accuracy of 2.4% and supports a maximum shunt current of 30 mA. Designed for surface mount applications, it utilizes an SOT-89-3 package. The component functions reliably across a temperature range from -30°C to +85°C.

Feature Summary

• Provides stable shunt precision voltage regulation
• Supports wide input voltage operation up to 24 V
• Ensures high initial accuracy for precise circuit biasing

Applications

• Precision analog signal conditioning circuits
• Data acquisition system reference sources
• Portable instrumentation power management

Procurement Notes

Verify the specific suffix 'E1-A' against official Renesas documentation to confirm exact marking and tape-and-reel specifications. Ensure compatibility with standard SOT-89-3 footprint requirements during PCB layout. Cross-reference thermal dissipation limits with application load conditions to maintain reliability within the specified operating temperature range.

Selection Notes

Select this component when a compact shunt reference is required for low-power applications. Consider the 2.4% initial accuracy tolerance for budget-sensitive designs. Evaluate the SOT-89-3 package constraints against available board space. Confirm that the 30 mA maximum shunt current meets the circuit's leakage and biasing demands without excessive power waste.

Part Context

This part belongs to the UPC1944T series of voltage references from Renesas Electronics. The series focuses on providing reliable reference voltages in small form factors suitable for modern electronic devices. The UPC1944T-E1-A variant specifically denotes the surface-mount configuration with defined packaging and handling characteristics consistent with the broader product line.

Replacement Considerations

Consult official Renesas substitution guides for verified alternatives. Generic equivalents may not match the specific 2.4% accuracy or 30 mA current limits. Verify pinout compatibility before replacing to ensure proper circuit function.