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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 Nov 13, 2007

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Key Features

  • 90% Efficiency
  • Adjustable Output from VIN to 20V
  • 2.6V to 5.5V Input Supply Range
  • Input Supply Undervoltage Lockout
  • Pin-Programmable 640kHz/1.2MHz Switching Frequency
  • Programmable Soft-Start
  • Improved EMI
  • FB Regulation Voltage Tolerance < 1%
  • Small 10-Pin TDFN Package
  • Thermal-Overload Protection

Applications/Uses

  • LCD Monitor Panels
  • LCD TV Panels
  • Notebook Computer Displays

Description

The MAX17062 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 MAX17062 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 22V internal MOSFET can generate output voltages up to 20V 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 MAX17062 is available in a 10-pin TDFN package.

Simplified Block Diagram

MAX17062: Minimal Operating Circuit MAX17062: Minimal Operating Circuit Zoom icon

Technical Docs

Data Sheet TFT-LCD Step-Up DC-DC Converter Nov 13, 2007

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 .