STOD1412 Datasheet | STMicroelectronics

Features - - - 2.7 V to 5.5 V input voltage range 120 m A max output current for each converter Output voltages: - Step-up from 4.3 V to 6.0 V - Inverting from -8.0 V to -2.0 V Synchronous rectification for both DC-DC converters Efficiency: - 80% IO = 10 m A - 30 m A - 85% IO = 30 m A - 120 m A 1.3 MHz PWM mode control Shutdown mode with Enable pin Inrush current protection Adjustable output voltages True shutdown mode Less than 1 µA current consumption in shutdown mode Over-temperature protection Package: 16 pin - QFN 3X3 Temperature range: -40°C to 85°C QFN16L (3mm x 3mm) - - - - - - - - - - - Description The STOD1412 is a dual DC-DC converter capable of providing a positive and negative voltage from a positive input voltage ranging from 2.7 V to 5.5 V. It integrates two plete power stages, one step-up and one inverting, each of which need just one inductor, and input and output capacitor. The STOD1412 works in PWM mode, switching at a 1.3 MHz frequency, thus reducing the size and values of external ponents. An Enable pin makes it possible to turn off the device to reduce the quiescent current to less than 1 µA. The output voltages can be set easily by using two external resistors for each converter. The device integrates a “soft start” with controlled inrush current limit, thermal shutdown and short circuit protection. High efficiency and low quiescent current, bined with the small number and tiny size of external ponents, make the STOD1412 suitable for battery-operated systems, particularly for powering Active Matrix OLED display panels. Applications - - - - - Active matrix organic LED power supplies Mobile phones PDAs Camcorders Digital still cameras Table 1. Device summary Order code STOD1412PUR Package QFN16L (3x3 mm) Rev. 1 Packaging 4500 parts per reel 1/21 .st. 21 August 2007 Contents .. 1 2 3 4 5 Diagram - - - - - - - - - - . 3 Pin configuration - . ....