STOD1412| Datasheet

STOD1412, STOD1412PMR

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STOD1412
Step-up and inverting DC-DC converter
Features

2.7 V to 5.5 V input voltage range 120 mA 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 mA - 30 mA 85% IO = 30 mA - 120 mA 1.3 MHz PWM mode control Shutdown mode with Enable pin Inrush current protection Adjustable output voltages True shutdown mode Less than 1 uA 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 complete 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 components. An Enable pin makes it possible to turn off the device to reduce the quiescent current to less than 1 uA. 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, combined with the small number and tiny size of external components, 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
www.st.com 21

August 2007