BM81810MUF-M datasheet(61/78 Pages) ROHM | Automotive Panel Power Management IC

부품명	BM81810MUF-M

부품 상세설명	Automotive Panel Power Management IC

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제조업체	ROHM [Rohm]

홈페이지	http://www.rohm.com

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BM81810MUF-M

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TSZ02201-0A3A0AS00510-1-2

15.May.2020 Rev.001

TSZ22111

• 15 • 001

www.rohm.com

NTC Block Function

NTC Block is the function to adjust VGH, VCOM voltage depending on NTC pin voltage.

NTC pin will output 40

μA (Typ) current.

Connecting thermistor element can perform temperature adjustment function.

Below functions can be set by EEPROM.

1.

VGH NTC Enable (Register Address 02h [7])

VGH Block NTC Function can be changed to Enable or Disable.

2.

VCOM NTC Enable (Register Address 05h [7])

VCOM Block NTC Function can be changed to Enable or Disable.

Pin connection when NTC is not used.

When NTC function is not used, connect NTC pin to OPEN.

EN Block Function

When inserting resistor to EN terminal, EN threshold voltage is decided by resistance division with internal resistor.

Threshold Voltage calculation;

EN threshold voltage high typical ( VENH ) = 0.9/300x (400+Rup) [V]

EN threshold voltage low typical ( VENL )

= 0.9/500x (600+Rup) [V]

The EN threshold voltage including unevenness is as follows;

Figure 101. NTC Block Diagram

Figure 102. EN Block Diagram

NTC

Θ

LOGIC

ADC

4bit

VGH

VCOM

REGISTER

DAC

REGISTER

DAC

-

+

VREF

(0.9V)

100KΩ

300KΩ

200KΩ

Rup

VEN

EN

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