MAX16929：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

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.

Key Features

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

MAX16929: Typical Application Circuit

Applications/Uses

Automotive Central Information Displays
Automotive Dashboards
Automotive Navigation Systems

DataSheet

title	Download file
MAX16929 Data Sheet	MAX16929.pdf

Parametrics

Part Number	Primary Topology	Monitor/Control Features	DC-DC/Power Features	V_IN (V)	V_IN (V)	V_OUT (V)	V_OUT (V)	Max. I_OUT (A)	Max. I_OUT (A)	Oper. Freq. (kHz)	Inverting Outputs	Package/Pins	Budgetary Price
Part Number	Primary Topology	Monitor/Control Features	DC-DC/Power Features	min	max	min	max	Max. I_OUT (A)	Max. I_OUT (A)	Oper. Freq. (kHz)	Inverting Outputs	Package/Pins	See Notes
MAX16929	Step-Up/Down	Low Batt./POK Output	Avg. Current Mode Control Current Limit Fixed Freq./PWM Internal Switch Soft Start	4	28	-24	29	2	2	2000	1	TSSOP-EP/28	$2.29 @1k

Design kits & evaluation modules

MAX16929EVKIT

Quality and Environmental Data

MAX16929.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX16929AGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929AGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929BGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929BGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929CGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929CGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929DGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929DGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929EGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929EGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX16929FGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929FGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929GGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929GGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929GUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929GUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929HGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929HGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929IGUI/V+	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free
MAX16929IGUI/V+T	Active		TSSOP-EP,;28 pin;63.7 mm²	-40°C to +105°C	Lead Free

MAX16929.pdf MAX16929

典型应用电路 MAX16929