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MAX8728EVKIT

MAX8728 Evaluation Kit

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Data Sheet MAX8728 Evaluation Kit Sep 01, 2005

Support & Training

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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.

Key Features

  • Configured for +10V to +13.2V Input Range
  • Output Voltages
    • +3.3V Output at 2A (Step-Down Switching Regulator)
    • +13.5V Output at 500mA (Step-Up Switching Regulator)
    • +28V Output at 50mA (Positive Charge Pump)
    • -6V Output at 150mA (Negative Charge Pump)
  • Resistor-Adjustable Switching Regulator and Charge-Pump Output Voltages
  • Logic-Controlled, High-Voltage Switch with Adjustable Delay
  • Selectable 500kHz/1MHz/1.5MHz Switching Frequency
  • 180° Out-of-Phase Switching
  • Low-Profile, Surface-Mount Components
  • Fully Assembled and Tested

Applications/Uses

Description

The MAX8728 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that provides the voltages and features required for active-matrix thin-film transistor (TFT), liquid-crystal display (LCD) panels in LCD monitors and LCD TVs. The EV kit contains a stepdown switching regulator, a step-up switching regulator, a positive two-stage charge pump for the TFT gate-on supply, and a negative single-stage charge pump for the TFT gate-off supply. Also included is a logic-controlled, high-voltage switch with adjustable delay, and a capacitive dummy load at the gate-on supply for ease of testing.

The EV kit, as configured, provides the following outputs from a +10VDC to +13.2VDC power supply. The step-down switching regulator is configured for a +3.3V output, providing at least 2A. The step-up switching regulator is configured for a +13.5V output, providing at least 500mA. The positive charge pump is configured for a +28V output, providing at least 50mA. The negative charge pump is configured for a -6V output, providing at least 150mA. The high-voltage switch can be controlled by external logic and can be configured for a delay set by an external capacitor.

The MAX8728 switches at 1.5MHz, allowing the use of tiny surface-mount components. The EV kit can also operate at a lower frequency with component changes. The MAX8728 TQFN package (0.8mm maximum height) with low-profile external components allows this circuit to be less than 2mm high.

Simplified Block Diagram

Technical Docs

Data Sheet MAX8728 Evaluation Kit Sep 01, 2005

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.