Top

TFT-LCD Step-Up DC-DC Converter

High-Performance Step-Up DC-DC Converter Provides a Regulated Supply Voltage for Active-Matrix Thin-Film Transistor (TFT) Liquid-Crystal Displays (LCDs)

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Data Sheet TFT-LCD Step-Up DC-DC Converter Sep 19, 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 .

Key Features

  • 90% Efficiency
  • Adjustable Output from VIN to 24V
  • 2.6V to 5.5V Input Supply Range
  • Input Supply Undervoltage Lockout
  • Pin-Programmable 640kHz/1.2MHz Switching Frequency
  • Programmable Soft-Start
  • 0.1µA Shutdown Current
  • Small 10-Pin Thin DFN Package
  • Applications/Uses

    • LCD Monitor Panels
    • Notebook Computer Displays

    Description

    The MAX8727 is a high-performance step-up DC-DC converter that provides a regulated supply voltage for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). The MAX8727 incorporates current mode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in n-channel power MOSFET to achieve high efficiency and fast transient response.

    Users can select 640kHz or 1.2MHz operation using a logic input pin (FREQ). The high switching frequencies allow the use of ultra-small inductors and low-ESR ceramic capacitors. The current-mode architecture provides fast transient response to pulsed loads. A compensation pin (COMP) gives users flexibility in adjusting loop dynamics. The 30V internal MOSFET can generate output voltages up to 24V from an input voltage between 2.6V and 5.5V. Soft-start slowly ramps the input current and is programmed with an external capacitor.

    The MAX8727 is available in a 10-pin thin DFN package.

    Simplified Block Diagram

    MAX8727: Typical Operating Circuit MAX8727: Typical Operating Circuit Zoom icon

    Technical Docs

    Data Sheet TFT-LCD Step-Up DC-DC Converter Sep 19, 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 .