Automotive regulators handle 60V inputs

Diodes ZXTR2108 app cct The ZXTR2105FQ, ZXTR2108FQ and ZXTR2112FQ are designed to deliver 5V, 8V, or 12V regulated outputs respectively from nominal battery supplies of 12V or 24V at up to 15mA.


“These devices can tolerate battery voltage spikes up to 60V, making possible applications that cannot use standard linear regulators,” said the firm. “The 60V maximum input rating of all these regulators ensures sufficient headroom in the event of transient over-voltage conditions, while their line and load regulation safeguards continuous operation by ensuring transient voltage drops cannot cause latch-up.”


The parts are qualified to AEC-Q101 standards for high reliability and are product part approval process (PPAP)-capable.


Transistor, Zener diode and resistor are monolithically integrated in the SOT23 package.


Diodes ZXTR2108F graphsGraphs for ZXTR2108FQ

(caveats below)


ZXTR2105FQ is aimed at applications that require a 5V ±5% regulated supply from a 12V battery – for example a 4.7V to 5.3V MCU supply.


ZXTR2112FQ is aimed at cars and trucks that have 24V batteries but need a 12V ±10% supply for applications such as the Vcc supply for gate driver ICs.


Graph caveats

Line regulation ΔVout = Vout – Vout(10Vin 15mAout 25°C Tj)

Load regulation ΔVout = Vout – Vout(24Vin 100μAout 25°C Tj)


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