Datasheet > MAX25221ATVY

MAX25221ATVY

更新时间： 2024-10-29 02:49:11

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美信 - MAXIM		/
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描述
Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer

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MAX25220/MAX25221/

MAX25221B

Automotive 4-Channel TFT-LCD Power Supply

with VCOM Buffer

General Description

Benefits and Features

The MAX25220/MAX25221/MAX25221B are 4-channel

TFT-LCD power ICs that provide symmetrical positive

● High Integration

• Synchronous Boost Provides AVDD of 4.2V to

10.5V at up to 200mA

AVDD and negative NAVDD supplies as well as VG

and VG

gate supplies. In addition, a VCOM buffer with

• NAVDD Inverter Output at up to -200mA

OFF

output voltage range above and below ground and a tem-

• 15mA VG

Output (7.6V to 20.2V) from 3x

perature measurement block are integrated (MAX25221/

B).

Regulated Charge Pump

• VG

(-18.2V to -5.6V) from Regulated Charge

OFF

Pump at up to -15mA (charge-pump doubler)

• Controlled Sequencing during Power-On and

Power-Off of All Rails

• VCOM Output Range +1V to -2.49V in 6.83mV

Steps (MAX25221)

• NTC Input for Temperature Measurement/

Compensation (MAX25221)

The devices contain non-volatile memory so that the val-

ues of all outputs can be calibrated for the lifetime of the

device (maximum five times).

Programming is carried out using the built-in I C interface,

which can also be used to read back diagnostic informa-

tion. A stand-alone mode is also available.

The temperature sensor interface block measures the

temperature optionally allowing the VCOM output voltage

to be adjusted depending on the measured temperature.

● Low EMI

• 420kHz/2.1MHz Switching Frequency with Spread

Spectrum

The MAX25220/MAX25221/MAX25221B are available in

a TQFN package and operate in the -40 to 125°C temper-

ature range.

● I C Control/Diagnostic Interface with FLTB (Interrupt)

Output

• UV diagnostics on All Outputs

● Versatile

Applications

• Non-Volatile Output Voltage Settings on AVDD/

● Infotainment Displays

● Central Information Displays

● Instrument Clusters

NAVDD, VG , VG

, VCOM, and Sequencing

OFF

• Supports Stand-Alone Operation Mode after

Programming

• Compact 5mm x 5mm TQFN32 Package

● AECQ100 Grade 1

Ordering Information appears at end of datasheet.

19-100803; Rev 4; 11/20

12 3 4 5 6 7...55

中文翻译

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与MAX25221ATVY相关器件

型号	品牌	获取价格	描述	数据表
MAX25221B	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25221B	ADI	获取价格	Automotive 4-Channel TFT-LCD Power Supplies with VCOM Buffer
MAX25221BATJ	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25221BATV	MAXIM	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer
MAX25221C	ADI	获取价格	Automotive 4-Channel TFT-LCD Power Supplies with VCOM Buffer
MAX25222	ADI	获取价格	Automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer and ASIL B Features
MAX25222C	ADI	获取价格	集成VCOM缓冲器和ASIL B特性的汽车级4通道TFT-LCD电源
MAX25223	ADI	获取价格	IQ为3.5μA的汽车级36V 3.5A降压转换器
MAX25231	ADI	获取价格	具有3.5μA IQ的36V、1.2A小型降压转换器
MAX25232	MAXIM	获取价格	36V, 3A Mini Buck Converters with 3.5Î¼A IQ

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