STOD13A屬于集成電路（IC）的特殊用途穩(wěn)壓器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的STOD13A特殊用途穩(wěn)壓器該系列產(chǎn)品用于電源控制、某種形式的轉(zhuǎn)換，適用于特定的復(fù)雜應(yīng)用。因此，各種產(chǎn)品特性集差異較大，包括空燃比傳感器接口、汽車交流發(fā)電機(jī)電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號(hào)控制、熱電 (peltier) 冷卻器控制、壓電觸覺控制、閥門控制、小型發(fā)動(dòng)機(jī)管理等。

描述 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.

特性 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