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RT8509A - Step-Up DC/DC Converter

General Description

The RT8509A is a high performance switching Boost converter that provides a regulated supply voltage for active matrix thin film transistor (TFT) liquid crystal displays (LCDs).

Key Features

  • include adjustable soft-start, over-voltage protection, and over-temperature protection. The RT8509A is available in the WDFN-12L 5x5 package. Marking Information RT8509A GQW YMDNN RT8509AGQW : Product Number YMDNN : Date Code Features.
  • 90% Efficiency.
  • Adjustable Output Up to 24V.
  • 2.8V to 14V Input Supply Voltage.
  • Input Supply Under-Voltage Lockout.
  • Fixed 1.2MHz Switching Frequency.
  • Adjustable Soft-Start.
  • VOUT Over-Voltage Protection.
  • Over-Temperature.

📥 Download Datasheet

Datasheet Details

Part number RT8509A
Manufacturer Richtek
File Size 192.48 KB
Description Step-Up DC/DC Converter
Datasheet download datasheet RT8509A 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.

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® RT8509A 4.5A Step-Up DC/DC Converter General Description The RT8509A is a high performance switching Boost converter that provides a regulated supply voltage for active matrix thin film transistor (TFT) liquid crystal displays (LCDs). The RT8509A incorporates current mode, fixed-frequency, pulse width modulation (PWM) circuitry with a built in N-MOSFET to achieve high efficiency and fast transient response. The RT8509A has a wide input voltage range from 2.8V to 14V. In addition, the output voltage can be adjusted up to 24V via an external resistive voltage divider. The maximum peak current is limited to 4.5A (min.). Other features include adjustable soft-start, over-voltage protection, and over-temperature protection. The RT8509A is available in the WDFN-12L 5x5 package.