AP431AWG-7

Voltage Reference Overview

The AP431AWG-7 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It features an internal reference voltage of 2.495V with ±0.5% tolerance. The device supports a programmable output voltage range from 2.495V up to 36V using external resistors. Key electrical parameters include a typical dynamic output impedance of 0.2Ω, a sink current capability of 200mA, and a minimum cathode current for regulation of 300μA. It operates within a temperature range of -20°C to +85°C.

Voltage Reference Feature Summary

• Adjustable output voltage set via external resistor divider network
• Low dynamic output impedance for stable regulation
• Fast turn-on response characteristics
• RoHS compliant and halogen-free construction

Voltage Reference Applications

• Precision voltage monitoring circuits
• Over-voltage and under-voltage protection systems
• Constant-current sinks and sources
• Crowbar protection circuits

Voltage Reference Procurement Notes

Verify the component status before procurement as the datasheet indicates this series is not recommended for new designs. Confirm package compatibility with SC-59 footprint requirements. Ensure design updates consider the manufacturer's recommendation to use the AS431 series for future projects. Validate RoHS compliance documentation matches specific manufacturing lot requirements.

Voltage Reference Selection Notes

Select this component when a low-cost, adjustable shunt regulator is required for commercial temperature ranges. The SC-59 package offers a compact surface-mount solution. Consider the 0.5% reference tolerance if higher accuracy than standard Zener diodes is needed without variable resistors. Evaluate stability boundaries regarding load capacitance during circuit design.

Voltage Reference Part Context

This part belongs to the AP431 family of adjustable precision shunt regulators produced by Diodes Incorporated. It serves as a direct replacement for traditional Zener diodes in many applications, offering improved performance through active output circuitry. The 'W' suffix denotes the SC-59 package type, while the 'A' indicates the tighter ±0.5% reference voltage tolerance variant.

Voltage Reference Replacement Considerations

The datasheet explicitly recommends using the AS431 series instead of the AP431 for new designs. Verify pinout compatibility if substituting with other manufacturers' equivalents. Check thermal dissipation ratings against the specific application's power requirements.