TLV431ALPRPG

Overview

The TLV431ALPRPG is a low voltage precision adjustable shunt regulator from onsemi, part of the TLV431A series. It features a programmable output voltage range of 1.24 V to 16 V with a guaranteed reference accuracy of ±1.0% at 25 °C and ±2.0% over the industrial temperature range of −40 °C to 85 °C. The device exhibits a sharp low current turn-on characteristic and a low dynamic impedance of 0.25 Ω over an operating current range of 0.1 mA to 20 mA. It is housed in a TO-92-3 package (LP suffix) and is lead-free and halide-free.

Feature Summary

• Programmable output voltage range spanning 1.24 V to 16 V
• Guaranteed reference accuracy of ±1.0% at 25 °C and ±2.0% across the industrial temperature range
• Sharp low current turn-on characteristic with low dynamic output impedance
• Wide operating cathode current range from 0.1 mA to 20 mA

Applications

• Low output voltage switching power supply error amplifier
• Adjustable voltage or current linear and switching power supplies
• Voltage monitoring circuits
• Current source and sink circuits
• Precision references for analog and digital circuits

Procurement Notes

Verify the specific ordering suffix 'LP' corresponds to the TO-92-3 package style required for your design. Confirm that the standard commercial grade temperature range meets your application needs, as automotive variants utilize different prefixes. Check the datasheet revision history for discontinuation notices regarding this specific packaging option before finalizing procurement plans.

Selection Notes

Select the TLV431ALPRPG when a precise, low-cost shunt regulator is needed for voltages between 1.24 V and 16 V. The A-series accuracy is suitable for general-purpose applications requiring ±1.0% tolerance at room temperature. Ensure the circuit design accommodates the minimum cathode current requirement for regulation and verify stability boundaries if load capacitance is present.

Part Context

This component belongs to the TLV431 family of low voltage precision adjustable shunt regulators manufactured by onsemi. The TLV431 series serves as a direct replacement for Zener diodes in applications demanding higher precision and lower dynamic impedance. The ALPRPG variant specifically denotes the A-series accuracy grade packaged in a TO-92-3 configuration.

Replacement Considerations

TLV431BLPRPG offers tighter initial accuracy specifications. TLV431CSN1T1G provides even higher precision in a SOT-23-3 package. NCV431ASNT1G is an automotive-grade alternative qualified under AEC-Q100 standards.