产品概述
描述
STOD1812 is a step-up converter designed to power passive matrix OLED (PMOLED) displays, providing the pre-charge and biasing voltage of the column matrix driver. STOD1812 uses a pulsed frequency modulation (PFM) control mode technique. The high switching frequency makes it possible to reduce the value and size of the external components. This device is particularly suitable for battery-operated applications, where overall system efficiency is the major concern.
Synchronous rectification has been integrated in the device in order to eliminate the external Schottky diode. An internal compensation net is also integrated, enabling the STOD1812 to provide excellent load transient performance in addition to good load regulation.
The output voltage is set using two external resistors. Over-temperature protection and undervoltage lockout (UVLO) functions are integrated in the device. An additional switch implements a true load disconnection feature which stops the currrent flowing from the input when the device is in shutdown mode. The EN pin turns off the device, reducing the quiescent current to 0.1 μA.
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所有功能
- Adjustable output voltage up to 20 V
- UVLO protection
- Over-temperature protection
- Low quiescent current: < 1 μA in shutdown mode
- Operating junction temperature range: -40 °C to 125 °C
- Package: DFN10L 3x3 mm, 0.8 mm
- True load disconnect
- Enable pin for shutdown mode
- Synchronous step-up converter
- Maximum output current 120 mA
- Input voltage range from 2.5 V to 5.5 V
- Switching at 1.2 MHz in typical application conditions
- Soft-start to limit inrush current
- Efficiency: 75 % at IO = 10 mA - 30 mA; 85 % at IO = 30 mA - 120 mA
EDA符号、封装和3D模型
意法半导体 - STOD1812
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