Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

Rugged Automotive TFT-LCD Power Supply Operates at 2.2MHz to Reduce Solution Size and Minimize AM Band Interference

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The MAX16928 is a highly integrated power supply for automotive TFT-LCD applications. The device integrates 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 TFT-LCD power-supply requirements (see the Ordering Information table in the full data sheet).

The boost converter uses spread-spectrum modulation to reduce peak interference and to optimize EMI performance. The sequencing input (SEQ) allows flexible sequencing of the positive-gate and negative-gate voltage regulators. The power-good indicator (PGOOD) indicates a failure on any of the converters or regulator outputs. Integrated thermal shutdown circuitry protects the device from overheating.

The MAX16928 is available in a 20-pin TSSOP package with exposed pad and operates over the -40°C to +105°C temperature range.
MAX16928: Typical Operating Circuit MAX16928: Typical Operating Circuit Enlarge+

Key Features

  • 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 2.2MHz Operation
  • Flexible Stand-Alone Sequencing
  • True Shutdown Boost Converter
  • Internal Soft-Start
  • Overtemperature Shutdown
  • -40°C to +105°C Operation
  • AEC-Q100 Qualified


  • Automotive Central Information Displays
  • Automotive Dashboards
  • Automotive Navigation Systems
Part NumberPrimary TopologyMonitor/Control FeaturesDC-DC/Power FeaturesLCD/LED/Flash/CCD FeaturesVIN
Oper. Freq.
Inverting OutputsPackage/PinsBudgetary
minmaxminmaxSee Notes
Avg. Current Mode Control
Current Limit
Internal Switch
TFT Bias35.5-24291.520001
$1.54 @1k
See All Multifunction PMICs (85)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX16928EVKIT: Evaluation Kit for the MAX16928

Quality and Environmental Data

Request Reliability Report for: MAX16928 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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