STVM100 I²C LCD/e-paper VCOM calibrator

The STVM100 is a programmable VCOM adjustment solution for thin-film transistor (TFT) liquid-crystal displays (LCDs) to remove “flickers”. It can replace a mechanical potentiometer, so that the factory operator can physically view the front screen when performing the VCOM adjustment. This significantly reduces labor costs, increases reliability, and enables automation.

STVM100 provides a digital I²C interface to control the sink current output (IOUT). This output drives an external resistive voltage divider, which can then be applied to an external VCOM buffer. Three external resistors R1, R2, and RSET determine the highest and lowest value of the VCOM. An increase in the output sink current will lower the voltage on the external divider so that the VCOM can be adjusted by 128 steps within this range. Once the desired VCOM setting is achieved, it can be stored in the internal EEPROM that will be automatically recalled during each power-up.

STVM100 is available in an 8-pin, 3mm x 3mm TDFN8 or 3mm x 3mm TSSOP8 package

技术特性

I²C interface, slave address: 1001111
7-bit adjustable sink current output
2.25V to 3.6V logic supply voltage VDD
AVDDoperating voltages
- 4.5V to 20V for VDD from 2.6V to 3.6V, and
- 4.5V to 13V for VDD from 2.25V to 3.6V
EEPROM for storing the optimum VCOM setting
Guaranteed monotonic output over operating range
400kHz maximum interface bus speed
Operating temperature: -40°C to 85°C
Available in an 8-pin 3mm x 3mm TDFN8 or 3mm x 3mm TSSOP8 Package

应用领域

TFT-LCD panels
e-paper and e-book displays

功能框图

STVM100 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STVM100DC6F	Active	0.6343	1000	DFN8 3x3x0.75	Tape And Reel
STVM100DS6F	Active	0.6343	1000	MSOP/TSSOP 8	Tape And Reel

DATASHEET

描述	版本	大小
STVM100 :DS5122: I²C LCD/e-paper VCOM calibrator	8	524KB

APPLICATION NOTES

描述	版本	大小
AN2686: Using the STVM100 to fully auto adjust LCD flicker	1	520KB
AN3110: Using the STVM100 to automatically adjust VCOM voltage in e-paper	1	273KB