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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STOD02 데이터시트(PDF) 1 Page - STMicroelectronics |
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STOD02 데이터시트(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  June 2009 Doc ID 15245 Rev 3 1/23 23 STOD02 Dual DC-DC converter for powering AMOLED display 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 ■ 150 mA maximum output current ■ 4.6 V fixed positive output voltage ■ Programmable negative voltage by S-wire from - 2.3 V to - 5.9 V ■ Typical efficiency: 85 % ■ Pulse skipping mode in light load condition (IO < 10 mA) ■ 1.6 MHz PWM mode control switching frequency (IO > 10 mA) ■ Enable pin for shutdown mode ■ Low quiescent current: < 1 µA in shutdown mode ■ Soft-start with inrush current protection ■ Over temperature protection ■ Temperature range: -40 °C to 85 °C ■ True shutdown mode ■ Fast outputs discharge circuit after shutdown ■ Package: DFN 12 leads - (3 x 3 mm) Applications ■ Active matrix organic LED power supply (AMOLED) ■ Mobile phones ■ PDAs ■ Camcorders and digital still cameras Description The STOD02 is a dual DC-DC converter meant to power AMOLED displays. It integrates a step up and an inverting DC-DC converter making it particularly suitable for battery operated products, where the major concern is the overall system efficiency. STOD02 works in pulse skipping mode during low load condition and in PWM-mode (at 1.6 MHz) for medium/high load condition. The high frequency allows reducing the value and number of external components just to 6 components needed. The enable pin allows turning off the device so reducing the current consumption to less that 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 and thermal shutdown are integrated functions of the device. DFN12L (3 x 3 mm) Table 1. Device summary Order code Package Packaging STOD02PUR DFN12L (3 x 3 x 0.8 mm) 3000 parts per reel STOD02TPUR DFN12L (3 x 3 x 0.6 mm) 3000 parts per reel www.st.com |
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