General Description

The MAX16929 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates one buck converter, one boost converter, one 1.8V/3.3V regulator controller, and two gate voltage regulators. The device comes in several versions to satisfy common automotive power-supply requirements (see the Ordering Information/Selector Guide table).

Features

♦ Operating Voltage Range of 4V to 28V (Buck) or  3V to 5.5V (Boost)

♦ Independent 28V Input Buck Converter Powers  TFT Bias Supply Circuitry and External Circuitry

♦ High-Power (Up to 6W) Boost Output Providing Up  to 18V

♦ 1.8V or 3.3V Regulator Provides 500mA with  External npn Transistor

♦ One Positive-Gate Voltage Regulator Capable of  Delivering 20mA at 28V

♦ One Negative-Gate Voltage Regulator

♦ High-Frequency Operation

    ◇ 2.1MHz (Buck Converter)

    ◇ 2.2MHz (Boost Converter)

♦ Flexible Stand-Alone Sequencing

♦ True Shutdown™ Boost Converter

♦ 6µA Low-Current Shutdown Mode (Buck)

♦ Internal Soft-Start

♦ Overtemperature Shutdown

♦ -40°C to +105°C Operation

Applications

    Automotive Dashboards

    Automotive Central Information Displays

    Automotive Navigation Systems