Shunt reference, adjustable, ±0.5%
The TL432BQDBVR is an adjustable precision shunt voltage reference from the TL432 family, functionally similar to the industry-standard TL431 but offered in a smaller SOT-23-5 package. It sets a reference voltage from 2.495 V up to 36 V using two external resistors, with a guaranteed initial tolerance of ±0.5% — tighter than the typical 1% grade of the standard TL431. The part sinks up to 100 mA and requires a minimum cathode current of 700 µA for regulation.
Pin-compatible replacement path
The TL432BQDBVR uses the SOT-23-5 footprint (also designated SC-74A / SOT-753). The TL432 family shares the same pinout and functional diagram with the TL431, which is widely available in the same SOT-23-5 package. If the ±0.5% tolerance is not strictly required, a TL431 variant with 1% tolerance in SOT-23-5 may serve as a drop-in replacement — confirm the cathode current and output drive match the application. No official TI cross-reference document is cited, so bench verification of the reference voltage and loop stability is recommended before committing a production run.