MAX16926GTP/V+ Analog Devices

Click here for production status of specific part numbers. MAX16926 Automotive 4-Output Display Power Solution with Watchdog General Description Benefits and Features The MAX16926 is a 4-channel power-management IC de- High Integration signed to accommodate the main rails used in modern Complete Display Power Solution from Automotive automotive TFT displays. The MAX16926 and the Battery MAX20069 TFT power supply and LED backlight driver One High-Voltage 2.1A Buck Converter (3.3V) combine to provide a two-chip solution to automotive dis- One High-Voltage 100mA Low-I Linear Regulator Q play power supply requirements. (3.3V) One Low-Voltage 1.6A Buck Converter (1.1V) The MAX16926 integrates a high-voltage buck converter One 175mA Low-Voltage Linear Regulator (1.8V) that transforms battery voltages into a 3.3V intermediate Power-Good Outputs rail. In addition, a high-voltage, always-on, low-quiescent- current linear regulator supplies power at 3.3V. Integrated Watchdog Timer Robust and Low EMI The low-voltage section consists of a fully-integrated DC/ Programmable Switching Frequency DC converter and an LDO running off the intermediate rail. Internal Spread Spectrum Oscillator The low-voltage DC/DC converter provides 1.1V, while the Slew-Rate Controlled Switching LDO produces 1.8V. In addition, an integrated watchdog Thermal Shutdown Protection timer guards against runaway code. Compact TQFN20 4mm x 4mm Package A single START control pin initiates the start-up sequence, thereby simplifying device control. The MAX16926 s ex- Ordering Information appears at end of datasheet. ternal pMOSFET control block allows battery voltage to be switched to a downstream device, such as a backlight boost converter. The MAX16926 is available in a TQFN package and oper- ates in the -40C to 105C temperature range. Applications Infotainment Displays Central Information Displays Instrument Clusters 19-100768 Rev 0 3/20MAX16926 Automotive 4-Output Display Power Solution with Watchdog Simplified Block Diagram BATT PGB WDI WAKE BSTB LDO1 HV LDO PG1 HIGH- WATCH VOLTAGE LX -DOG BUCK FIN BIAS PGATE RT OSC. PGATE CONTROL V5 LOW- LDO2 LV LDO LXC VOLTAGE BUCK PGND TEMP SENSOR SEQUENCING V33 & PGOOD START CONTROL MAX16926MAX16926 GND 19-100768 www.maximintegrated.com Maxim Integrated 2