Description

The STOD13A 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, therefore 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.

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 250 mA output current

■ 4.6 V fixed positive output voltage

■ Programmable negative voltage by SWIRE from -2.4 V to -6.4 V at 100 mV steps

■ Typical efficiency 85

■ Pulse skipping mode in light load condition

■ 1.5 MHz PWM mode control switching frequency

■ TDMA noise high immunity

■ 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 outputs discharge circuit after shutdown

■ Short-circuit protection

■ Package DFN12L (3 x 3) 0.6 mm height

Applications

■ Active matrix AMOLED power supply in portable devices

■ Cellular phones

■ Camcorders and digital still cameras

■ Multimedia players

STOD13ATPUR属于集成电路（IC） > 特殊用途稳压器。意法半导体（ST）集团制造生产的STOD13ATPUR特殊用途稳压器该系列产品用于电源控制、某种形式的转换，适用于特定的复杂应用。因此，各种产品特性集差异较大，包括空燃比传感器接口、汽车交流发电机电压调节、DDR 端接、液体透镜控制、摩托车转向信号控制、热电 (peltier) 冷却器控制、压电触觉控制、阀门控制、小型发动机管理等。