Analog Devices Inc. MAX16923 Automotive Display PMICs
Analog Devices Inc. MAX16923 Automotive Display PMICs are 4-channel power-management ICs designed to accommodate the main rails used in modern automotive TFT displays. The MAX16923 integrates a high-voltage Buck converter that transforms battery voltages into a 5.0V or 3.3V intermediate rail. In addition, a high-voltage, always-on, low-quiescent-current linear regulator supplies power at 3.3V. The low-voltage section comprises a fully-integrated DC-DC converter and an LDO running off the intermediate rail. In addition, an integrated watchdog timer guards against runaway code.
The MAX16923 features a single START control pin, which initiates the start-up sequence, thereby simplifying device control. The external MOSFET control block of the MAX16923 allows battery voltage to be switched to a downstream device, such as a backlight boost converter.
The MAX16923 can be used with the MAX20069 Automotive Backlight Driver to provide a two-chip solution to all automotive display power-supply requirements.
The MAX16923 PMIC is available in a compact TQFN package and operates in the -40°C to +105°C temperature range.
Features
- Automotive CISPR25 Class 5 compliant
- High integration
- Complete display power solution from automotive battery
- 1x high-voltage 2.1A Buck converter (5V or 3.3V)
- 1x high-voltage 100mA low-IQ linear regulator (3.3V)
- 1x low-voltage 1.6A buck converter (3.3V, 1.8V, 1.2V, or 1.1V)
- 1x low-voltage linear regulator (3.3V, 1.8V, 1.5V, or 1.0V)
- Power-Good outputs
- Integrated watchdog timer
- Robust and low EMI
- Programmable switching frequency
- Internal spread-spectrum oscillator
- Slew-rate controlled switching
- Thermal shutdown protection
- -40°C to +105°C operating temperature range
- Compact TQFN20 package, 4mm x 4mm dimensions
Applications
- Central information displays
- Infotainment displays
- Instrument clusters
Videos
Block Diagram
Typical Application Circuit (2MHz)
Typical Application Circuit (400KHz)
Design Solutions
Development Tools
Analog Devices Inc. MAX16923EVKIT Evaluation Kit
Demonstration and development kit for the the MAX16923 automotive 4-output display-power solution.
Related Products
Analog Devices / Maxim Integrated MAX20069 Automotive LED Backlight Driver
Automotive I2C-controlled 4-channel 150mA backlight driver with 4-output TFT-LCD bias.