MAX16929：带有boost转换器和栅极稳压器的汽车应用TFT-LCD 电源

高压TFT-LCD电源，灵活的显示阵列调整满足任何汽车显示器供电需求

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.

关键特性

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：典型应用电路

应用

汽车中心显示器
汽车仪表盘
汽车导航系统

数据手册DataSheet

语言	下载文件	备注
英文	MAX16929.pdf	Rev 2; 01/2012

关键参数

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

开发工具

MAX16929EVKIT

质量和环境数据

MAX16929.pdf

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX16929AGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929AGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929BGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929BGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929CGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929CGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929DGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929DGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929EGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929EGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
型号	状况	推荐替代产品	封装：类型引脚占位面积封装图编码/变更 *	温度	RoHS/无铅？
MAX16929FGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929FGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929GGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929GGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929GUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929GUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929HGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929HGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929IGUI/V+	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅
MAX16929IGUI/V+T	生产中		TSSOP-EP,；28引脚；63.7mm²	-40°C至+105°C	RoHS/无铅：无铅

MAX16929.pdf MAX16929

典型应用电路 MAX16929