Description

STOD1812 is a step-up converter designed to power passive matrix OLED (PMOLED) displays, providing the pre-charge and biasing voltage of the column matrix driver. STOD1812 uses a pulsed frequency modulation (PFM) control mode technique. The high switching frequency makes it possible to reduce the value and size of the external components. This device is particularly suitable for battery-operated applications, where overall system efficiency is the major concern.

Features

■ Synchronous step-up converter

■ Input voltage range from 2.5 V to 5.5 V

■ Maximum output current 120 mA

■ Efficiency: 75 at IO = 10 mA - 30 mA; 85 at IO = 30 mA - 120 mA

■ Switching at 1.2 MHz in typical application conditions

■ Enable pin for shutdown mode

■ True load disconnect

■ Soft-start to limit inrush current

■ UVLO protection

■ Adjustable output voltage up to 20 V

■ Low quiescent current: < 1 µA in shutdown mode

■ Over-temperature protection

■ Package: DFN10L 3x3 mm, 0.8 mm

■ Operating junction temperature range: -40 °C to 125 °C

Applications

■ Passive matrix OLED power supplies

■ Mobile phones

■ PDAs

■ Camcorders

■ Digital still cameras