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The RTQ2081 is a highly integrated PMIC designed for automotive radar applications. It integrates three buck converters, one high-PSRR low-dropout (LDO) regulator, and one general-purpose low-dropout (LDO) regulator. The high-voltage buck converter supports an input voltage range up to 24V and can withstand load dump events up to 36V, enabling direct connection to a 12V automotive battery. The RTQ2081 incorporates overvoltage and undervoltage monitoring circuits for each channel, an error output indicator, and fault status reporting through an I2C interface to enhance functional safety. The device also features an integrated Watchdog Timer (WDT) with configurable upper and lower window tolerances for improved system supervision and application flexibility. Additional programmable functions are available through I2C or factory-trimmed settings, including output voltage adjustment for each channel, customizable power-on sequencing, overvoltage (OV) and undervoltage (UV) monitor thresholds, and watchdog timeout configuration. The RTQ2081 is available in a WET-WQFN 4mm × 4mm 24-pin package with wettable flanks. The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 125°C.
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