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STOD2540 Datasheet(PDF) 1 Page - STMicroelectronics |
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STOD2540 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 20 page  July 2010 Doc ID 12204 Rev 10 1/20 20 STOD2540 PMOLED display power supply 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 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. In this state-of-the-art boost converter, a DC current path exists between the battery source and the load. In order to reduce the consumption in shutdown mode, a high-side load isolation switch is necessary to cut this DC current path in standby mode. The load disconnect switch (LDS) act as an isolation switch in shutdown mode. QFN8 (3 x 3 mm) Table 1. Device summary Order code Package Packaging STOD2540PUR QFN8 (3 x 3 mm) 3000 parts per reel www.st.com |
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