UPC1944T-E2-A

Overview

The UPC1944T-E2-A is an adjustable shunt precision voltage reference IC manufactured by Renesas Electronics. It operates within a wide output voltage range of 1.26 V to 24 V and features an initial accuracy of ±2.4%. The device supports a maximum shunt current of 30 mA and has a maximum series input voltage of 1.29 V. It is designed for surface mount installation in an SOT-89-3 package, with an operating temperature range spanning from -30°C to +85°C.

Feature Summary

• Adjustable shunt precision voltage regulation capability
• Wide output voltage range from 1.26 V to 24 V
• High initial accuracy specification of ±2.4%

Applications

• Precision measurement systems requiring stable reference voltages
• Portable instrumentation circuits
• Battery-powered equipment needing accurate voltage monitoring

Procurement Notes

Verify the specific suffix (E2-A) against official Renesas documentation to ensure correct packaging and environmental compliance status. Confirm that the SOT-89-3 package matches your PCB footprint requirements. Cross-reference the datasheet revision date to ensure all electrical parameters align with your design specifications before finalizing procurement orders.

Selection Notes

Select this component when an adjustable shunt regulator is required with high accuracy in a compact surface-mount form factor. Ensure the application voltage does not exceed the 1.29 V maximum series input limit relative to the reference node. Consider the ±2.4% initial accuracy tolerance for circuit calibration needs and verify thermal management within the specified -30°C to +85°C operating range.

Part Context

This part belongs to the UPC1944T series of shunt precision references from Renesas Electronics. It serves as a cost-effective solution for applications requiring precise voltage regulation without the complexity of series regulators. The series is designed for integration into power management ICs and general-purpose electronic circuits where space efficiency and accuracy are critical.

Replacement Considerations

Direct substitutes include other adjustable shunt references from Renesas such as the UPC1943T-E2-A, which shares similar packaging and functional characteristics. Verify pin compatibility and electrical parameter overlaps before substitution. Consult official cross-reference guides for any alternative manufacturers offering equivalent SOT-89-3 shunt regulators.