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AT5520A - Bias Power Supply

Download the AT5520A datasheet PDF. This datasheet also covers the AT5520A-GlobalMixed variant, as both devices belong to the same bias power supply family and are provided as variant models within a single manufacturer datasheet.

General Description

The AT5520A includes a high-performance boost regulator, a VCOM buffer (unity gain OPA), a VGH charge pump driver, and a VGL charge pump driver for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs).

Key Features

  • 2.5V to 5.5V Input Supply Range.
  • Active-High Enable Control.
  • 1.2MHz Current-Mode Boost Regulator.
  • Fast Transient Response to Pulse Load.
  • ±1% Accurate Output Voltage.
  • Built-In 20V/1.8A, 0.7Ω N-Channel MOSFET.
  • High Efficiency up to 90%.
  • Over-Current Protection.
  • Output Under-Voltage Protection.
  • High-Performance Operational Amplifier.
  • ±150mA Output Short-Circuit Current.
  • 12V/μs Slew Rate.
  • 12MHz, -3dB Bandwidth.
  • Ra.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AT5520A-GlobalMixed-modeTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number AT5520A
Manufacturer Global Mixed-mode Technology
File Size 475.00 KB
Description Bias Power Supply
Datasheet download datasheet AT5520A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Global Mixed-mode Technology AT5520A Bias Power Supply for TFT LCD Panels Features „ 2.5V to 5.5V Input Supply Range „ Active-High Enable Control „ 1.2MHz Current-Mode Boost Regulator Š Fast Transient Response to Pulse Load Š ±1% Accurate Output Voltage Š Built-In 20V/1.8A, 0.7Ω N-Channel MOSFET Š High Efficiency up to 90% Š Over-Current Protection Š Output Under-Voltage Protection „ High-Performance Operational Amplifier Š ±150mA Output Short-Circuit Current Š 12V/μs Slew Rate Š 12MHz, -3dB Bandwidth Š Rail-to-Rail Input and Output „ 600kHz Negative Charge Pump Driver for VGL „ 600kHz Positive Charge Pump Driver for VGH „ Power-On Sequence Control „ Thermal-Overload Protection „ TQFN3X3-16 Package Applications „ Photo Frame „ GPS „ UMPC regulator with an integrated 20V N-Channel 0.