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Internal-Switch Boost Regulator with Integrated 7-Channel Scan Driver, Op Amp, and LDO

The MAX17117 Is a Highly Integrated Solution Suitable to Drive GOA/GIP Notebook LCD Panels

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • 2.3V to 5.5V IN Supply-Voltage Range
  • 1.2MHz Current-Mode Step-Up Regulator
    • Fast-Transient Response
    • High-Accuracy Reference (1%)
    • Integrated 16V, 2A, 200mΩ MOSFET
    • High Efficiency (> 85%)
    • Adjustable Cycle-by-Cycle Current Limit
  • High-Performance Operational Amplifier
    • 200mA Output Short-Circuit Current
    • 40V/µs Slew Rate
    • 16MHz, -3dB Bandwidth
    • Low-Dropout Linear Regulator
    • High-Accuracy Output Voltage (1.0%)
  • High-Voltage Drivers with Scan Logic
    • +35V to -15V Outputs
    • 40V Maximum Voltage Swing
    • Gate-Shading Control
  • Thermal-Overload Protection
  • 32-Pin, 5mm x 5mm, Thin QFN Package

Applications/Uses

  • Notebook Computer Displays

Description

The MAX17117 includes a high-performance step-up regulator, a 350mA low-dropout (LDO) linear regulator, a high-speed operational amplifier, and a high-voltage level-shifting scan driver with gate-shading control. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications.

The step-up DC-DC converter provides the regulated supply voltage for panel source-driver ICs. The high 1.2MHz switching frequency allows the use of ultra-small inductors and ceramic capacitors. The current-mode control architecture provides a fast-transient response to pulsed loads typical of source driver loads. The step-up regulator features an adjustable soft-start and an adjustable cycle-by-cycle current limit.

The high-current operational amplifier is designed to drive the LCD backplane (VCOM). The amplifier features high output current (±200mA typ), fast slew rate (40V/µs typ), wide bandwidth (16MHz typ), and rail-to-rail inputs and outputs.

The low-voltage LDO linear regulator has an integrated 0.8Ω pass element and can provide at least 350mA. The output voltage is accurate within ±1%.

The high-voltage, level-shifting scan driver with gate-shading control is designed to drive the TFT panel gate drivers. Its seven outputs swing 40V (maximum) between +35V (maximum) and -15V (minimum) and can swiftly drive capacitive loads.

The MAX17117 is available in a 32-pin, 5mm x 5mm, thin QFN package with a maximum thickness of 0.8mm for thin LCD panels.

Simplified Block Diagram

MAX17117: Simplified Operating Circuit MAX17117: Simplified Operating Circuit Zoom icon

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.