CXLC8977 CXLC8978由12+1通道缓冲组成薄膜晶体管液晶显示器（TFT LCD）的需要Vcom缓冲器通过I2C接口编程每个通道10位分辨率每个通道的25毫安输出电流1通道轨对轨Vcom缓冲器10位可调输出电流±100mA短路电流±300毫安

CXLC8977 CXLC8978由12+1通道缓冲组成，以满足薄膜晶体管液晶显示器（TFT LCD）的需要。该装置包括一个Vcom缓冲器和12个gamma缓冲器，并通过I2 C接口编程。它包含两个寄存器组，可以存储两组不同的gamma和VCOM值。每个缓冲器能够驱动重电容负载并提供大电流负载（Vcom:100mA，Gammas:25mA）。
电源工作范围：7V至20V
12+1频道：
12通道轨对轨可编程缓冲器
每个通道10位分辨率
每个通道的25毫安输出电流
1通道轨对轨Vcom缓冲器：
10位可调输出
输出电流±100mA
输出短路电流±300毫安
50V/μs转换率
可编程VCOM限制
使用BKSEL选择哪个银行数据输出的两个银行寄存器
2线I2C从模式接口
非易失性存储器（NVM）存储设置（至少100次重新写入）

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXLC8977 CXLC8978 consists of 12+1 channel buffers target toward the needs of thin film transistor liquid crystal display (TFT LCD). This device incorporates one Vcom buffer and 12 gamma buffers, and is programmed through I2 C interface. It contains two register banks which can store two different sets of gamma and VCOM values. Each buffer is capable of driving heavy capacitive loads and offering large current loading (Vcom: 100mA, Gammas: 25mA). The CXLC8977 CXLC8978 is available in the QFN4X4-24 package.

   产品特点 返回TOP

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„ Supply Operation Range : 7V to 20V 

„ 12+1 Channels : 

--- 12 Channel Rail-to-Rail Programmable Gamma Buffers 

Š 10 bits Resolution for each Channel 

Š 25mA Output Current for each Channel 

---1 Channel Rail-to-Rail Vcom Buffer: 

Š 10 Bits Adjustable Output 

Š ±100mA Output Current 

Š ±300mA Output Short-Circuit Current 

Š 50V/μs Slew Rate 

Š Programmable VCOM Limits 

---2 Banks Registers Using BKSEL to Select which Bank Data Output 

„ 2-Wire I2 C Slave Mode Interface 

„ Non-Volatile Memory (NVM) Store Setting (at Least 100 Re-Write Times) 

„ QFN4X4-24 Package

   应用范围 返回TOP

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„ TFT-LCD Monitors 

„ LCD Televisions

   技术规格书（产品PDF) 返回TOP 

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     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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ntegrated Buffer
Part NO.	VDD  (V) min	VDD  (V) max	CH  Vr+ Vcom	IOUT (mA)  Vr,Vcom	S/R  (V/μs） Vr,Vcom	BW (MHz） Vr,Vcom	ISC (mA) Vr,Vcom	Note	Package
CXLC8973	6.5	18	1	100	20	19	260	SMBus, Rail-to-Rail Output	TDFN3X3-10
CXLC8974	9	20	14+1	25,   100	16,   70	10,   19	100, 260	Rail-to-Rail   Output,  SMBus,2 Banks MTP	QFN5X5-32
CXLC8975	6.5	19.5	18+1	30,   100	16,   80	9,   15	120,  300	Rail-to-Rail   Output	TQFP7X7-48/(FD)
CXLC8976	6.5	19.5	14+1	30,   100	16,   80	9,   15	120, 300	Rail-to-Rail   Output	TQFP7X7-48/(FD)
CXLC8977	7	20	12+1	25, 100	16, 50	30	100, 300	Rail-to-Rail   Output,  SMBus,2 Banks REG	QFN4X4-24
CXLC8978	7	20	16+2	25,   100	16,   50	30	100,  300	Rail-to-Rail   Output, SMBus,2 Banks MTP	QFN5X5-28
CXLC8979	7	20	12+1+1	25, 100	16, 50	30	100, 300	Rail-to-Rail   Output, SMBus,Banks MTP, CRC	QFN4X4-24
CXLC8980	6.5	18	14+1	25,   100	20,   20	10,   20	75,  140	Rail-to-Rail   Output,SMBus ,2 Banks MTP, Checksum	TQFN5X5-32
CXLC8981	7	18	1	100	23	20	270	SMBus,Rail-to-Rail  Output	TDFN3X3-8
CXLC8982	7	18	1	100	--	--	--	SMBus,   VCOM REF	TDFN3X3-8
CXLC8983	7	20	8+1	25, 100	16, 50	30	100, 300	SMBus,   Rail-to-Rail  Output,2 Bank MTP	QFN4X4-24