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BM81810MUF-M 데이터시트(PDF) 54 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) 54 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
DRN
VGL
DAC
REGISTER
VGL
DRIVER
ERRAMP
CP_CLK
PAVDD
DISCHARGE
D_VGL
C_VGL
C_DRN
DRN
VGL
DAC
REGISTER
DRIVER
ERRAMP
CP_CLK
PAVDD
DISCHARGE
VGL
C_DRN2
C_DRN1
D_VGL1
D_VGL2
C_VCN
C_VGL
VGL Block Function
VGL Block (Negative Charge Pump) can set below functions by EEPROM.
1.
VGL Voltage (Register Address 03h [7:0])
VGL voltage can be set by 0.1V step from -4.0V to -14.0V.
2.
DRN Switching Frequency (Register Address 0Ch [5:4])
Switching frequency can set AVDD frequency x1, x1/2, or x1/4.
Application Example for VGL (1
st Stage Negative Charge Pump)
Below Figure shows the circuit construction of 1
st Stage Negative Charge Pump.
Under this circuit, the possible setting range of VGL output voltage is -4 V to -(AVDD
– 2Vf) V
(When VGL positive current is 0mA)
Application Example for VGL (2
nd Stage Negative Charge Pump)
Below Figure shows the circuit construction of 2
nd Stage Negative Charge Pump.
Under this circuit, the possible setting range of VGL output voltage is -4 V to -(AVDDx2
– 4Vf) V
(When VGL positive current is 0mA)
Figure 87. VGL Block Diagram
Figure 88. 1
st Stage Negative Charge Pump
Figure 89. 2
nd Stage Negative Charge Pump
DRN
VGL
DAC
REGISTER
VGL
DRIVER
ERRAMP
CP_CLK
PAVDD
DISCHARGE


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