Description
STOD2540 is dedicated to passive matrix OLED (PMOLED) displays for portable handsets and provides the pre-charge and biasing voltage of the column matrix driver as shown in figure 3. The current capability of STOD2540 allows feeding a 1", 1.3" or 1.5" color PMOLED. STOD2540 is a boost converter that operates from 3.0 V to 5.5 V and can provide an output voltage as high as 25 V. The output current capability is maximum 40 mA up to 25 V output voltage. The regulation is performed by a resistor divider network (figure 3) that detects the output voltage.

Features
■ Inductor switches boost controller
■ PFM mode control
■ High efficiency over wide range of load (1 mA to 40 mA)
■ Integrated load disconnect switch
■ Over voltage protection with automatic restart
■ Soft start with adjustable peak current limit
■ Enable pin
■ Low shutdown current
■ Small external inductor
■ Supply voltage from 3.0 V to 5.5 V

Application
■ PMOLED display driver