MAX16928_12 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

19-5991; Rev 1; 1/12
EVALUATION KIT AVAILABLE
MAX16928
Automotive TFT-LCD Power Supply with Boost
Converter and Gate Voltage Regulators
General Description
The MAX16928 is a highly integrated power supply
for automotive TFT-LCD applications. The device inte-
grates 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).
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 over-
heating.
The MAX16928 is available in a 20-pin TSSOP pack-
age with exposed pad and operates over the -40NC to
+105NC temperature range.
Applications
Automotive Dashboards
Automotive Central Information Displays
Automotive Navigation Systems
Features
S High-Power (Up to 6W) Boost Output Providing Up
to 18V
S 1.8V or 3.3V Regulator Provides 500mA with
External npn Transistor
S One Positive-Gate Voltage Regulator Capable of
Delivering 20mA at 28V
S One Negative-Gate Voltage Regulator
S High-Frequency 2.2MHz Operation
S Flexible Stand-Alone Sequencing
S True Shutdown™ Boost Converter
S Internal Soft-Start
S Overtemperature Shutdown
S -40NC to +105NC Operation
S AEC-Q100 Qualified
Ordering Information appears at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
True Shutdown is a trademark of Maxim Integrated Products, Inc.
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX16928.related
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.