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MAX8798EVKIT

Evaluation Kit/Evaluation System for the MAX8798

Product Details

Key Features

Simplified Block Diagram

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Sampling:
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Key Features

  • +1.8V to +6V Input Range
  • Output Voltages
    • +8V Output at 300mA (+2.2V Input Step-Up Switching Regulator)
    • +21V Output at 20mA (Positive Charge Pump)
    • -13V Output at 20mA (Negative Charge Pump)
    • ±150mA High-Current Op-Amp Output
  • Resistor-Adjustable Switching Regulator and Op-Amp Output Range
  • Digitally Programmable Op-Amp Output Voltage
  • +35V to -25V High-Voltage Level-Shifting Drivers
  • Greater than 85% Efficiency (Step-Up Switching Regulator)
  • 1.2MHz Step-Up Switching Frequency
  • SMBus-Compatible Interface
  • Windows 2000/XP/Vista (32-Bit)-Compatible Software
  • 1.2mm Low-Profile Surface-Mount Components
  • Lead-Free and RoHS Compliant
  • Fully Assembled and Tested

Applications/Uses

  • LCD Monitor Panels
  • Notebook Computer Display

Description

The MAX8798 evaluation system (EV system) consists of the MAX8798 evaluation kit (EV kit) and the Maxim CMAXQUSB command module. A Windows® 2000/XP/Vista®-compatible software is also available for use with the EV system (MAX8798EVCMAXQU+) and can be downloaded from www.maximintegrated.com/evkitsoftware.

The MAX8798 EV kit (MAX8798EVKIT+) is a fully assembled and tested surface-mount printed-circuit board (PCB) that provides the features required for active-matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs). The EV kit contains a step-up switching regulator, positive two-stage charge pump, negative two-stage charge pump, digitally adjustable VCOM calibration device with nonvolatile memory, SMBus™-compatible interface, high-speed operational amplifier (op amp), and high-voltage, level-shifting scan driver for thin TFT-LCD applications.

The EV kit operates from a DC supply voltage from +1.8V to +6V. The step-up switching regulator is configured for a +8V output providing at least 300mA from a +2.2V input. The positive charge pump is configured for a +21V output providing at least 20mA. The negative charge pump is configured for a -13V output providing at least 20mA. The op amp is capable of providing up to ±150mA peak and features a programmable output voltage initially configured for +3.2V. The high-voltage level-shifting scan driver buffers inputs from STV, CPV, and OE pads and shifts them to a desired level to drive TFT-LCD row logic.

The MAX8798 EV kit demonstrates low quiescent current and high efficiency (> 85%) for maximum battery time per charge. Operation at 1.2MHz allows the use of tiny surface-mount components. The MAX8798 thin QFN package (0.8mm max height), with low-profile external components, allows this circuit to be less than 1.2mm high.

The Maxim CMAXQUSB command module provides the SMBus-compatible interface and is connected to a PC through the universal serial bus (USB) port. The MAX8798 EV kit software provides a graphical user interface (GUI) for exercising the MAX8798 features.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.