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BM81810MUF-M 데이터시트(PDF) 55 Page - Rohm

부품명 BM81810MUF-M
부품 상세설명  Automotive Panel Power Management IC
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제조업체  ROHM [Rohm]
홈페이지  http://www.rohm.com
Logo ROHM - Rohm

BM81810MUF-M 데이터시트(HTML) 55 Page - Rohm

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TSZ02201-0A3A0AS00510-1-2
© 2020 ROHM Co., Ltd. All rights reserved.
15.May.2020 Rev.001
TSZ22111
• 15 • 001
www.rohm.com
VCOM Block Function
VCOM Block (VCOM Calibrator) can set below functions by EEPROM.
1.
VCOM (HOT) Voltage (Register Address 04h [7:0])
VCOM (HOT) voltage can be set by 40mV step from AVDD/2 +/- 0.0V to 4.0V.
2.
VCOM (CAL) Voltage (Device Address 1001111x)
VCOM (CAL) voltage is the function to make minor adjustment of VCOM (HOT) voltage value.
VCOM (HOT) can be set by 10mV step from +/- 0.0V to 0.63V.
Refer Page 19,
“EEPROM I2C Format for DVR (VCOM calibrator)” for VCOM (CAL) voltage setting.
3.
VCOM (COLD) Voltage (Register Address 05h [6:0])
To set VCOM (COLD) voltage can have the VCOM voltage relates to NTC Pin voltage, when NTC Function is used.
VCOM (COLD) voltage range can be set by 10mV step from VCOM (CAL)
–0V to VCOM (CAL)+0.63V.
Refer “NTC Block Function” for the detail description of NTC Function.
However, VCOM output voltage setting range is AVDD x0.7 to AVDD x0.2 or AVDD/2+4.8V to AVDD/2-4.8V.
For Example AVDD = 13.0V
AVDD/2 = 6.5V
2.5V
10.5V
11.13V
1.87V
+0.63V
-0.63V
VCOM Min Voltage
AVDD x 0.2 = 13 x 0.2 = 2.6V
VCOM Max Voltage
AVDD x 0.7 = 13 x 0.7 = 9.1V
Figure 90. VCOM Block Diagram
DAC
REGISTER
AVDD
VCOM
NEG


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