Description
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.
FEATUREs
■ Step-up and inverter converters
■ Operating input voltage range from 2.5 V to
4.5 V
■ Synchronous rectification for both DC-DC
converters
■ Minimum 200 mA output current
■ 4.6 V fixed positive output voltage
■ Programmable negative voltage by SWIRE from
-2.4 V to -5.4 V at 100 mV steps
■ Typical efficiency: 85%
■ Pulse skipping mode in light load condition
■ 1.5 MHz PWM mode control switching
frequency
■ Enable pin for shutdown mode
■ Low quiescent current in shutdown mode
■ Soft-start with inrush current protection
■ Overtemperature protection
■ Temperature range: -40 °C to 85 °C
■ True-shutdown mode
■ Fast discharge outputs of the circuits after
shutdown
■ Short-circuit protection
■ Package DFN12L (3 x 3 mm) 0.6 mm height
APPLICATIONs
■ Active matrix AMOLED power supply
■ Cellular phones
■ Camcorders and digital still cameras
■ Multimedia players