The STOD13CMTPUR is a dual DC-DC converter for AMOLED display panels. It integrates a step-up and an inverting DC-DC converter making it particularly suitable for battery operated products, in which the major concern is overall system efficiency. It works in pulse-skipping mode during low load conditions and PWM-MODE at 1.5 MHz frequency for medium/high load conditions. The high frequency allows the value and size of external components to be reduced. The Enable pin allows the device to be turned off, thereby reducing the current consumption to less than 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, thermal shutdown, and short-circuit protection are integrated functions of the device.
Feature
- Step-up and inverting converters
- Operating input voltage range from 2.5 V to 4.5 V
- Synchronous rectification for both DC-DC converters
- Minimum 250 mA output current
- 4.6 V fixed positive output voltage
- Programmable negative voltage by SWIREfrom - 1.4 V to - 4.4 V at 100 mV steps
- Typical efficiency: 85%
- Pulse-skipping mode in light load condition
- 1.5 MHz PWM mode control switching frequency
- High immunity to TDMA noise
