Programmable Multi-Output TFT LCD Bias Power CXLC8991 DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels One synchronous step-up

发布时间:2020-04-06 09:43:38 浏览次数:715 作者:嘉泰姆
摘要:Programmable Multi-Output TFT LCD Bias Power CXLC8991 DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels One synchronous step-up

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1.产品概述       2.产品特点     RED嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)</span>RED嘉泰姆

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The CXLC8991 DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels in QFN6X6-40 package. One synchronous step-up converter, one asynchronous step-down converter, and two charge pumps regulators convert the 8V to 14V input voltage into four output voltages with 1 channel OPAMP. These features complete the power- supply requirements of large screen LCD panels. The step-up converter provides source voltages VAVDD and the step-down converter provides logic voltage VLOGIC for the system. The dual charge pumps regulators independently generate adjustable regulated output voltages VGL and VGH to bias the LCD using external charge pump attached to the switching node. The step-up converter and step-down converter operate with a fixed switching frequency of 750kHz, and all output are programmable. The CXLC8991 is available in a 40-pin QFN (6mm x 6mm) package

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„ Input Supply Range: 8V ~ 14V RED嘉泰姆

„ Current Mode Sync-Boost Converter for AVDD RED嘉泰姆

¾ Fixed 750kHz Switching Frequency RED嘉泰姆

¾ 2.2A to 5A Programmable Current Limit RED嘉泰姆

¾ 13.5V to 19.8V Programmable Output RED嘉泰姆

¾ Integrated 20V/0.1Ω Switching N-MOSFET RED嘉泰姆

„ Buck Converter for VLOGIC RED嘉泰姆

¾ Fixed 750kHz Switching Frequency RED嘉泰姆

¾ 2.2V to 3.7V Programmable Output RED嘉泰姆

¾ Integrated 12V/0.2Ω Switching N-MOSFET RED嘉泰姆

„ Positive Charge-Pump Regulator for VGH RED嘉泰姆

¾ 20V to 35V Programmable Output RED嘉泰姆

¾ Thermal Compensation RED嘉泰姆

„ Negative Charge-Pump Regulator for VGL RED嘉泰姆

¾ -4.5V to -13.5V Programmable Output RED嘉泰姆

„ Built-in Power-On Sequence and Soft-Start Function RED嘉泰姆

„ Isolation Switching PMOS for AVDD RED嘉泰姆

„ Protection Function RED嘉泰姆

¾ Input Under Voltage Lockout (UVLO) RED嘉泰姆

¾ Over-Temperature Protection (OTP) RED嘉泰姆

¾ Over-Voltage Protection (OVP) RED嘉泰姆

¾ Over-Current Protection (OCP) RED嘉泰姆

¾ Output Under Voltage Protection (UVP) RED嘉泰姆

¾ Short Circuit Protection (SCP) RED嘉泰姆

„ 2-Wire I2 C Slave Mode Interface RED嘉泰姆

„ Available in QFN6X6-40 PackageRED嘉泰姆

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„ TFT LCD DisplaysRED嘉泰姆

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产品封装图&nbsp;返回TOPRED嘉泰姆


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