STOD02TPUR STMicroelectronics

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 DFN12L (3 x 3 mm) Programmable negative voltage by S-wire from - 2.3 V to - 5.9 V PDAs Typical efficiency: 85 % Camcorders and digital still cameras Pulse skipping mode in light load condition (I < 10 mA) O 1.6 MHz PWM mode control switching Description frequency (I > 10 mA) O The STOD02 is a dual DC-DC converter meant to Enable pin for shutdown mode power AMOLED displays. It integrates a step up Low quiescent current: < 1 A in shutdown and an inverting DC-DC converter making it mode particularly suitable for battery operated products, Soft-start with inrush current protection where the major concern is the overall system efficiency. STOD02 works in pulse skipping mode Over temperature protection during low load condition and in PWM-mode (at Temperature range: -40 C to 85 C 1.6 MHz) for medium/high load condition. The True shutdown mode high frequency allows reducing the value and number of external components just to 6 Fast outputs discharge circuit after shutdown components needed. The enable pin allows Package: DFN 12 leads - (3 x 3 mm) turning off the device so reducing the current consumption to less that 1 A. The negative Applications output voltage can be programmed by an MCU through a dedicated pin which implements single- Active matrix organic LED power supply wire protocol. Soft-start with controlled inrush (AMOLED) current limit and thermal shutdown are integrated Mobile phones functions of the device. 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 June 2009 Doc ID 15245 Rev 3 1/23 www.st.com 23 Contents STOD02 Contents 1 Diagram . 3 2 Pin configuration . 4 3 Maximum ratings 5 4 Application . 6 5 Electrical characteristics . 7 6 S-wire protocol 10 7 Typical performance characteristics . 13 8 Demonstration board . 16 9 Package mechanical data 17 10 Revision history . 22 2/23 Doc ID 15245 Rev 3