MAX25221B
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MAX25221B

Automotive 4-Channel TFT-LCD Power Supplies with VCOM Buffer

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Industry's First High Integrated Automotive 4-Ch TFT Bias with I2C and VCOM

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.63
Features
  • High Integration
    • Synchronous Boost Provides AVDD of 4.2V to 10.5V at up to 200mA
    • NAVDD Inverter Output at up to -200mA
    • 15mA VGON Output (7.6V to 20.2V) from 3x Regulated Charge Pump
    • VGOFF (-18.2V to -5.6V) from Regulated Charge 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/B/C)
    • NTC Input for Temperature Measurement/Compensation (MAX25221/B/C)
  • Low EMI
    • 420kHz/2.1MHz Switching Frequency with Spread Spectrum
  • I2C Control/Diagnostic Interface with FLTB (Interrupt) Output
    • UV Diagnostics on All Outputs
  • Versatile
    • Non-Volatile Output Voltage Settings on AVDD/NAVDD, VGON, VGOFF, VCOM, and Sequencing
    • Supports Stand-Alone Operation Mode after Programming
    • Compact 5mm x 5mm TQFN32 Package
  • ​AEC-Q100 Grade 1
Additional Details
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The MAX25220/MAX25221/MAX25221B/MAX25221C are a 4-channel TFT-LCD power IC that provides symmetrical positive AVDD and negative NAVDD supplies as well as VGON and VGOFF gate supplies. In addition, a VCOM buffer with output voltage range above and below ground and a temperature measurement block are integrated (MAX25221/B/C).

The device contains non-volatile memory so that the values of all outputs can be calibrated for the lifetime of the device (maximum five times).

Programming is carried out using the built-in I2C interface, which can also be used to read back diagnostic information. 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.

The MAX25220/MAX25221/MAX25221B/MAX25221C are available in a TQFN package and operates in the -40°C to +125°C temperature range.

Applications

  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters
Part Models 2
1ku List Price Starting From $3.63

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX25221BATJ/V+
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MAX25221BATJ/V+T
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Part Models

Product Lifecycle

PCN

May 7, 2021

- 2150

ASSEMBLY

MAX25221BATJ/V+

PRODUCTION

MAX25221BATJ/V+T

PRODUCTION

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

May 7, 2021

- 2150

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ASSEMBLY

MAX25221BATJ/V+

PRODUCTION

MAX25221BATJ/V+T

PRODUCTION

Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX25221EVKIT

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

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MAX25221EVKIT

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

Features and Benefits

  • 2.65V to 5.5V Input Range
  • Default Output Voltages
    • 6.8V Output at 200mA (Boost Converter)
    • -6.8V Output at -200mA (Inverting Regulator)
    • 12V Output at 15mA (Positive-Charge Pump Regulator)
    • -10V Output at 15mA (Negative-Charge Pump Regulator)
    • -2.49V Output at 100mA (VCOM Buffer)
  • The EV Kit Components Fit the 2.1MHz Frequency; for Using 420kHz, Hardware Changes Are Needed
  • Spread Spectrum
  • Dedicated GUI
  • Full Sequencing Flexibility
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX25221 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB used to evaluate MAX25221 and MAX25221B automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer or the MAX25220 automotive 4-Channel TFT-LCD Power Supply without VCOM. Each output rail (AVDD, NAVDD, VGON, VGOFF and VCOM) can be independently adjusted via I2C. The EV kit demonstrates the device’s features: adjustable output voltage, fault protection, VCOM temperature compensation, and non-volatile memory programming. The EV kit exposes an I2C interface which can operate in conjunction with the MINIQUSB+ adapter or a third party I2C master like a general-purpose microcontroller. The EV kit also includes Windows®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the IC. The EV system includes both the EV kit and the MINIQUSB+ adapter board.

Applications

  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters

MAX25221EVSYS

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

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MAX25221EVSYS

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

Evaluation Kit for the MAX25220, MAX25221, MAX25221B, MAX25221C

Features and Benefits

  • 2.65V to 5.5V Input Range
  • Default Output Voltages
    • 6.8V Output at 200mA (Boost Converter)
    • -6.8V Output at -200mA (Inverting Regulator)
    • 12V Output at 15mA (Positive-Charge Pump Regulator)
    • -10V Output at 15mA (Negative-Charge Pump Regulator)
    • -2.49V Output at 100mA (VCOM Buffer)
  • The EV Kit Components Fit the 2.1MHz Frequency; for Using 420kHz, Hardware Changes Are Needed
  • Spread Spectrum
  • Dedicated GUI
  • Full Sequencing Flexibility
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX25221 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB used to evaluate MAX25221 and MAX25221B automotive 4-Channel TFT-LCD Power Supply with VCOM Buffer or the MAX25220 automotive 4-Channel TFT-LCD Power Supply without VCOM. Each output rail (AVDD, NAVDD, VGON, VGOFF and VCOM) can be independently adjusted via I2C. The EV kit demonstrates the device’s features: adjustable output voltage, fault protection, VCOM temperature compensation, and non-volatile memory programming. The EV kit exposes an I2C interface which can operate in conjunction with the MINIQUSB+ adapter or a third party I2C master like a general-purpose microcontroller. The EV kit also includes Windows®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the IC. The EV system includes both the EV kit and the MINIQUSB+ adapter board.

Applications

  • Central Information Displays
  • Infotainment Displays
  • Instrument Clusters

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