The STOD03AS is a dual DC-DC converter with short-circuit protection 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 light 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 enter shutdown mode.
The STOD03AS is a dual DC-DC converter integrating a step-up and an inverting converter, specifically designed for active matrix AMOLED power supply applications. It features synchronous rectification for both converters, operating with an input voltage range from 2.5 V to 4.5 V. The device supports a fixed positive output voltage of 4.6 V and a programmable negative voltage ranging from -2.4 V to -5.4 V via a single-wire protocol (SWIRE).
| Operating input voltage range | 2.5 V to 4.5 V |
|---|---|
| Positive output voltage | 4.6 V fixed |
| Negative output voltage range | -2.4 V to -5.4 V |
| Minimum output current | 200 mA |
| Typical efficiency | 85% |
| Switching frequency | 1.5 MHz |
| Temperature range | -40 °C to 85 °C |
| Package type | DFN12L (3 x 3 mm) |
It is a dual DC-DC converter with short-circuit protection specifically designed for AMOLED display panels.
The negative output voltage can be programmed by an MCU through a dedicated pin which implements a single-wire protocol.
The device works in pulse skipping mode during light load conditions to improve efficiency.