EUP2656-应用于AMOLED显示板的三输出开关型驱动器 DataSheet

概述
EUP2656集成了两个高性能Boost转换器以及一个负压Buck-Boost转换器，分别产生输出电压VELVDD, VELVSS和VAVDD，非常适合应用于由电池供电的AMOLED显示板（有源矩阵有机发光二级体）。
EUP2656中CTRL控制VELVDD、VELVSS的打开与关断，并通过CTRL pin的单线控制协议可调节VELVSS与VAVDD的输出电压。EN_VO3控制VAVDD的打开与关断。
EUP2656具有较好的线性调整率与负载调整率，还设有短路保护以及过热关断等其他保护功能。

特点
• 输入电压范围：2.9V~ 4.5V
• 极好的线性调整率和负载调整率
• 固定1.45MHZ开关频率
• 高精度固定4.6V输出电压VELVDD
• 输出电压VAVDD可编程范围5.8V~7.9V，默认值为7.6V
• 输出电压VELVSS可编程范围-5.4V~ -1.4V，默认值为-4.0V
• VELVDD和VELVSS最大输出电流可达300mA
• VAVDD最大输出电流可达55mA
• 短路保护
• 过温关断
• 3mm×3mm 16 pin QFN封装
• 符合RoHS规范及100% 无铅

应用
• 有源矩阵OLED显示板(AMOLED)

EUP2656-Triple Outputs Switching Regulator for AMOLED Display 

Description
The EUP2656 is designed to drive AMOLED displays requiring VELVDD, VELVSS and VAVDD. It integrates two high performance boost converters for VELVDD and VAVDD, an inverting buck-boost converter for VELVSS. A Single Wire interface on the CTRL pin is integrated to adjust the VELVSS and VAVDD voltage in digital steps. Also the CTRL pin can turn the VELVSS and VAVDD voltage on or off. The EN_VO3 pin turns a boost converter for VAVDD on or off.
Fault protection includes cycle-by-cycle current limit, short circuit protection and thermal shutdown. Internal soft-start minimizes the inrush supply current and the output overshoot at initial startup.
The EUP2656 is available in 3mm×3mm 16 pin QFN package.

Feature
• 2.9V to 4.5V Input Voltage Range
• Excellent Line and Load Regulation
• 1.45MHz Switching Frequency
• High Accuracy Fixed 4.6V VELVDD Output Voltage
• Programmable VAVDD = 5.8V to 7.9V (Default 7.6V)
• Programmable VELVSS = -5.4V to -1.4V (Default -4.0V)
• 300mA Maximum Output Current for VELVDD and VELVSS
• 55mA Maximum Output Current for VAVDD
• Short Circuit Protection
• Thermal Shutdown
• Available in 3mm×3mm 16 pin QFN Package
• RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free

Application
• Active Matrix OLED