TPR5045-SO1R

Overview

The TPR5045-SO1R is a high-precision voltage reference from the TPR50 series, providing a fixed output of 4.5 V in an SOP8 package. It operates within a supply voltage range of 3 V to 15 V and supports bidirectional currents of ±10 mA with low dropout characteristics. The device features an initial accuracy of ±0.05% and a typical temperature coefficient of 2.5 ppm/°C across the -40°C to +125°C operating range. Electrical specifications include a quiescent current of 1 mA, line regulation of 0.1 ppm/V, and load regulation of 20 ppm/mA.

Feature Summary

• High precision with 0.05% initial accuracy and low temperature drift for stable performance
• Bidirectional current capability supporting both sourcing and sinking of ±10 mA
• Low noise output with dedicated NR pin for additional filtering via external capacitor

Applications

• Battery test equipment
• Industry control systems
• Precision instrumentation
• Medical equipment

Procurement Notes

Verify the specific suffix SO1R corresponds to the SOP8 package configuration. Confirm that the required output voltage matches the 4.5 V specification. Ensure the application environment stays within the recommended operating temperature range of -40°C to +125°C. Check thermal dissipation requirements against the junction-to-ambient resistance values provided in the datasheet.

Selection Notes

Select this component when a fixed 4.5 V reference with high accuracy is required. Consider the ±10 mA output current capability for driving loads directly. Evaluate the need for the noise reduction pin if ultra-low noise is critical. Compare thermal resistance values against available PCB space for heat dissipation.

Part Context

This part belongs to the TPR50 family of low-noise, low-drift precision voltage references manufactured by 3PEAK. The series offers various fixed output voltages including 1.25 V, 2.5 V, and 5 V. All members share similar electrical characteristics and are designed for high-resolution systems requiring excellent temperature stability.

Replacement Considerations

Direct substitutes within the same family include TPR5040-SO1R (4.096 V) and TPR5050-SO1R (5.0 V). For MSOP8 packaging, consider TPR5045-VS1R-S. Verify pin compatibility and thermal performance before substitution.