Diodes Incorporated announced the ZXTR2105FQ, ZXTR2108FQ and ZXTR2112FQ regulator transistors. These devices are qualified to AEC-Q101 standards for high reliability and are PPAP-capable. Designed to deliver 5 V, 8 V, or 12 V regulated outputs from nominal battery supplies of 12 V or 24 V, these regulator transistors are well-suited for powering vehicle electronics. This product family can tolerate battery voltage spikes up to 60 V, making possible applications that cannot use standard linear regulators.
By monolithically integrating a transistor, Zener diode, and resistor into a SOT23 package, these regulator transistors reduce component count, which minimizes PCB area and increases system reliability by reducing PCB interconnect. The ZXTR2105FQ is targeted at applications that require a 5 V ±5% regulated supply from a 12 V battery, e.g., for a stable MCU supply within the required 4.7 V to 5.3 V supply range. The ZXTR2112FQ is aimed at cars and trucks that have 24 V batteries but need a 12 V ±10% supply for applications such as the VCC supply for gate driver ICs. All these regulator transistors deliver an output current up to 15 mA.
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| Internal Device Schematic. |
The 60 V 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, further contributing to system reliability.
The automotive-qualified ZXTR21xxFQ devices provide a highly reliable and compact solution to common voltage regulator requirements in vehicle electronics and are priced at $0.15 in 10k quantities.
