AP432AWG-7

Overview

The AP432AWG-7 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It features an internal reference voltage of 1.24V with ±0.5% tolerance and supports cathode currents up to 200mA. The output voltage is programmable from 1.24V to 20V using external resistors. Key electrical characteristics include a dynamic output impedance of 0.2Ω, a temperature coefficient of 30ppm/°C, and a minimum regulation current of 150µA. It operates within a temperature range of -20°C to +85°C.

Feature Summary

• Adjustable precision shunt regulation with low dynamic output impedance
• Fast turn-on response for improved Zener diode replacement
• Low output noise and stable temperature performance
• Halogen-free and lead-free construction

Applications

• Precision voltage monitoring circuits
• Over-voltage and under-voltage protection systems
• Constant-current sinks and sources
• Delay timers and crowbar circuits

Procurement Notes

Verify the component status as not recommended for new design before procurement. Confirm that the specific ordering suffix matches the required package type and tolerance level. Ensure compliance with RoHS directives and check for any applicable product change notifications or discontinuance notices prior to finalizing supply agreements.

Selection Notes

Select this device when a precise, adjustable reference is needed in a compact surface-mount package. The SC-59 package offers a small footprint suitable for space-constrained designs. Consider the AZ431L series if designing new products, as it is the recommended successor for future applications.

Part Context

This component belongs to the AP432 family of adjustable precision shunt regulators produced by Diodes Incorporated. These devices are designed to replace traditional Zener diodes in various power management and signal conditioning applications requiring higher accuracy and stability over temperature variations.

Replacement Considerations

Diodes Incorporated recommends using the AZ431L series as a direct replacement for new designs. Verify pinout compatibility and electrical specifications against the target application requirements before substituting.

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is 150µA.

How is the output voltage programmed?

The output voltage is set between 1.24V and 20V using two external resistors configured as a voltage divider network.