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STOD13ATPUR Datasheet(PDF) 1 Page - STMicroelectronics |
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STOD13ATPUR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 24 page  December 2011 Doc ID 022599 Rev 1 1/24 24 STOD13A 250 mA dual DC-DC converter for powering AMOLED displays Features ■ Step-up and inverter converters ■ Operating input voltage range from 2.5 V to 4.5 V ■ Synchronous rectification for both DC-DC converters ■ Minimum 250 mA output current ■ 4.6 V fixed positive output voltage ■ Programmable negative voltage by SWIRE from -2.4 V to -6.4 V at 100 mV steps ■ Typical efficiency 85% ■ Pulse skipping mode in light load condition ■ 1.5 MHz PWM mode control switching frequency ■ TDMA noise high immunity ■ Enable pin for shutdown mode ■ Low quiescent current in shutdown mode ■ Soft-start with inrush current protection ■ Overtemperature protection ■ Temperature range -40 °C to 85 °C ■ True-shutdown mode ■ Fast outputs discharge circuit after shutdown ■ Short-circuit protection ■ Package DFN12L (3 x 3) 0.6 mm height Applications ■ Active matrix AMOLED power supply in portable devices ■ Cellular phones ■ Camcorders and digital still cameras ■ Multimedia players Description The STOD13A is a dual DC-DC converter for AMOLED display panels. It integrates a step-up and an inverting DC-DC converter making it particularly suitable for battery operated products, in which the major concern is overall system efficiency. It works in pulse skipping mode during low load conditions and PWM-MODE at 1.5 MHz frequency for medium/high load conditions. The high frequency allows the value and size of external components to be reduced. The Enable pin allows the device to be turned off, therefore reducing the current consumption to less than 1 µA. The negative output voltage can be programmed by an MCU through a dedicated pin which implements single-wire protocol. Soft-start with controlled inrush current limit, thermal shutdown and short-circuit protection are integrated functions of the device. DFN12L (3 x 3 mm) Table 1. Device summary Order code Positive voltage Negative voltage Package Packaging STOD13ATPUR 4.6V -2.4V to -6.4V DFN12L (3 x 3mm) 3000 parts per reel www.st.com |
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