MAX16929

PRODUCTION

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

High-Voltage TFT-LCD Power Supply Offers a Wide Array of Trim Options to Fit Any Automotive Display Power Requirements

Data Sheet (Rev. 2) Product Selection Table

Part Models: 14
1ku List Price: Starting From $3.02

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Overview

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

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 in the full data sheet).

Designed to operate from a single 4V to 28V supply or 5.5V to 28V supply, the device is ideal for automotive TFT-LCD applications. Both the buck and boost converters use 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 MAX16929 is available in a 28-pin TSSOP package with exposed pad, and operates over the -40°C to +105°C temperature range.

Applications

Automotive Central Information Displays
Automotive Dashboards
Automotive Navigation Systems

Part Models: 14
1ku List Price: Starting From $3.02

Documentation

Data Sheet 1

MAX16929: Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators Data Sheet (Rev.2) 01/05/2012

Reliability Data 1

MAX16929 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX16929AGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929AGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929BGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929BGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929CGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929CGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929DGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929DGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929EGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929EGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929GGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929GGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929IGUI/V+	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX16929IGUI/V+T	28-TSSOP_4.4-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Switching Regulators & Controllers 2
MAX16927		Automotive TFT-LCD Power Supply with Boost, Buck, and Cuk Converters, VCOM Buffers, Gate Drivers, and SPI Interface
MAX16928	PRODUCTION	Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

Evaluation Kits

Evaluation Kit for the MAX16929

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Features and Benefits

4.5V to 28V Input Range
Output Voltages
- 5V Output at 1.2A (Step-Down Switching Regulator)
- 12V Output at 500mA (Step-Up Switching Regulator)
- 3.3V Output at 500mA (Regulator Controller)
- 18V Output (Positive Gate Voltage Regulator)
- -6.2V Output (Negative Gate Voltage Regulator)
High-Frequency Operation
- 2.1MHz (Buck Converter)
- 2.2MHz (Boost Converter)
Adjustable Positive and Negative Charge Pumps
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX16929 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that provides the voltages and features required for automotive thin-film transistor (TFT), liquid-crystal display (LCD) applications. The EV kit includes one step-down and one step-up switching regulator, one positive gate and one negative gate voltage regulator, one 3.3V regulator controller with external npn transistor, and one positive and one negative charge pump.

The EV kit can operate from 4.5V to 28V input voltages and is optimized for automotive TFT-LCD applications. The step-down switching regulator is configured for a 5V output that provides at least 1.2A. The step-up switching regulator is configured for a 12V output that provides at least 500mA. The positive gate voltage regulator provides 18V output and the negative gate voltage regulator provides -6.2V.