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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