RT8509 - Richtek

RT8509 Step-Up DC/DC Converter

The RT8509 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 RT8509 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 RT85.

Features

include programmable soft-start, over voltage protection, and over temperature protection. The RT8509 is available in a WDFN-10L 3x3 package. Ordering Information RT8509 Package Type QW : WDFN-10L 3x3 (W-Type) Note : Lead Plating System G : Green (Halogen Free and Pb Free) Richtek products are : ` RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Features z 90% Efficiency z Adjustable Output Up to 24V z 2.8V to 14V Input Supply Voltage z Input Supply Under Voltage Lockout z Fixed 1.2MHz Switc.