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The RTQ2080-QF/RTQ2081-QF is a highly integrated PMIC designed for automotive radar applications. It includes three buck converters, one high PSRR lowdropout (LDO) regulator, and one general low-dropout (LDO) regulator. The high-voltage buck converter operates with an input voltage range of up to 24V and is capable of sustaining a 36V load dump. It is suitable for a direct connection to a 12V battery. The RTQ2080-QF/RTQ2081-QF features built-in overvoltage and undervoltage monitoring circuits on each channel, an error output indicator, and fault status reporting via I²C for enhanced functional safety. The RTQ2080-QF/RTQ2081-QF is equipped with a standard built-in WDT (Watchdog Timer) function. This feature offers versatility for a wide range of applications through configurable setting for both upper and lower window tolerances. The device offers system design flexibility with I²C or factory-trimmed configurable functions, including adjustable output voltage for each channel, customizable power-on sequencing, overvoltage (OV) or undervoltage (UV) monitor threshold voltage, and the watchdog timeout setting. The RTQ2080- QF/RTQ2081-QF is available in a WET-WQFN-24AL 4x4 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.
AEC-Q100 Grade 1 Qualified
Compliance with ISO 26262 ASIL B
Safety Mechanisms Include Power-On Built-In Self-Test (BIST) for OV/UV Monitors, I2C Cyclic Redundancy Check (CRC), and OTP Register CRC
Three Buck Converters (HVBuck1, LVBuck2 & 3) with Peak-Current Control, Forced PWM (FPWM), and Power-Saving (PSM) Operation to Enhance Efficiency under Light Load Conditions - Fixed Switching Frequency: RTQ2080-QF at 2.04MHz; RTQ2081-QF at 2.1MHz. - EMI Reduction Features including Spread Spectrum and Phase-Shift Operation - HVBuck1 Supports Input Voltage from 4V to 24V with 36V Load Dump Protection, Adjustable Output Voltage, and up to 1.5A Output Current - LVBuck2 and LVBuck3 Support Input Voltage from 2.7V to 5V, Adjustable Output Voltage, and up to 1.5A Output Current - Pins Related to LVBuck2/LVBuck3 Can Float if the Channel is Unused
Two Low Dropout Regulators (LDO1 and LDO2) - LDO1 with 2.7V to 5V Input Voltage, Adjustable Output Voltage, up to 0.3A Output Current, and High PSRR with 0.1A Output Current (60dB at 100kHz, 40dB at 1MHz) - LDO2 with 2.7V to 5V Input Voltage, Adjustable Output Voltage, and up to 0.4A Output Current
Input and Output Functions - Monitoring WDT Input Signal from External MCU via WDI - WDT Error Status Indication via WDTERR - RESET Input Signal Control via RESETIN - Power Status Indication via PGOOD - Error Status Indication via ERROUT
Small Form Factor - Wettable WET-WQFN-24AL 4x4 Package with Compact BOM
Junction Temperature Range: -40°C to 150°C
Ambient Temperature Range:-40°C to 125°C
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