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Automotive 4-Output Display Power Solution with Watchdog

Industry's First Automotive PMIC for Automotive Display Applications

Product Details

Parametric specs for Multifunction PMICs
VIN (V) (min) 3.5
VIN (V) (max) 36
# Step-Down Outputs 1
# LDO Outputs 2
VOUT (V) (min) 1
VOUT (V) (max) 5
Package/Pins TQFN-CU/20
Budgetary
Price (See Notes)
3.5
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Simplified Block Diagram

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Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 3.5
VIN (V) (max) 36
# Step-Down Outputs 1
# LDO Outputs 2
VOUT (V) (min) 1
VOUT (V) (max) 5
Package/Pins TQFN-CU/20
Budgetary
Price (See Notes)
3.5

Key Features

  • High Integration
    • Complete Display Power Solution from Automotive Battery
    • One High-Voltage 2.1A Buck Converter (3.3V)
    • One High-Voltage 100mA Low-IQ Linear Regulator (3.3V)
    • One Low-Voltage 1.6A Buck Converter (1.1V)
    • One 175mA Low-Voltage Linear Regulator (1.8V)​
    • Power-Good Outputs
  • Integrated Watchdog Timer
  • Robust and Low EMI
    • Programmable Switching Frequency
    • internal Spread Spectrum Oscillator>
    • Slew-Rate Controlled Switching
    • Thermal Shutdown Protection
  • Compact TQFN-20 4mm x 4mm Package

Applications/Uses

Description

The MAX16926 is a 4-channel power-management IC designed to accommodate the main rails used in modern automotive TFT displays. The MAX16926 and the MAX20069 TFT power supply and LED backlight driver combine to provide a two-chip solution to automotive display power supply requirements.

The MAX16926 integrates a high-voltage buck converter that transforms battery voltages into a 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 consists of a fully-integrated DC/DC converter and an LDO running off the intermediate rail. The low-voltage DC/DC converter provides 1.1V, while the LDO produces 1.8V. In addition, an integrated watchdog timer guards against runaway code.

A single START control pin initiates the start-up sequence, thereby simplifying device control. The MAX16926's external 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 operates in the -40°C to 105°C temperature range.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .