TL432ACDBZT

Overview

The TL432ACDBZT is an adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 36 V and provides an adjustable output voltage between 2.495 V and 36 V. The device features an initial accuracy of 1% at 25°C and a temperature coefficient of 92 PPM/°C. It supports a maximum cathode current of 100 mA with a minimum operating current of 600 µA. The component is housed in a SOT-23-3 surface-mount package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Provides adjustable reference voltage functionality using external resistors
• Offers high thermal stability with low output temperature drift
• Features active output circuitry suitable for direct Zener diode replacement

Applications

• Board-level regulators
• Adjustable power supplies
• Switching power supplies

Procurement Notes

Verify the specific suffix 'AC' denotes the 1% accuracy grade and commercial/extended temperature range. Confirm the 'DBZT' suffix corresponds to the SOT-23-3 package and tape-and-reel quantity. Ensure compatibility with RoHS standards if required by the target assembly process. Cross-reference the datasheet revision date against the manufacturing lot code for specification consistency.

Selection Notes

Select this component when a compact, adjustable shunt regulator is needed for space-constrained designs. The SOT-23-3 package offers a small footprint compared to traditional through-hole alternatives. Choose this part over fixed references when precise voltage setting via external resistors is required. Consider the 1% initial accuracy for applications demanding tighter tolerance than standard 2% variants.

Part Context

The TL432 series serves as a pin-compatible alternative to the TL431 family, offering identical electrical performance but with a different pinout configuration optimized for SOT-23 packages. This design allows designers to utilize smaller footprints without sacrificing the proven reliability and wide availability of the TL43x architecture. It is widely used in general-purpose power management circuits.

Replacement Considerations

• TL432ACDBVR
• TL432ACDBZR

FAQ

How does the TL432ACDBZT differ from the TL431?

The TL432ACDBZT shares the same electrical characteristics and functionality as the TL431 but utilizes a different pin arrangement compatible with the SOT-23-3 package.

What is the minimum current required for regulation?

The device requires a minimum cathode current of 600 µA to maintain proper regulation and stable output voltage.