Datasheet
Power supply IC series for TFT-LCD panels
12V Input Multi-Channel
System Power Supply IC
BM81004MUV
General Description
BM81004MUV is a system power supply for TFT-LCD
panels used for liquid crystal TVs. This IC is
incorporated with Negative and Positive charge pump
controller and Gate Pulse Modulation (GPM) function. It
also features built-in EEPROM to contain each setting
voltage, soft start time etc.
Features
■
Step-up DC/DC converter (AVDD).
(Synchronous rectification, Built-in load switch).
■
Step-down DC/DC converter 1(VIO).
(Non-synchronous rectification).
■
Step-down DC/DC converter 2(VCORE).
■
Step-down DC/DC converter 3(HAVDD).
(Synchronous rectification).
■
Positive charge pump controller (VGH).
■
Negative charge pump controller (VGL).
■
Gate Pulse Modulation (GPM) function.
■
High Voltage LDO (50mA)
■
10 bit DAC-controlled Gamma Amplifier 4ch
■
8 bit DAC-controlled VCOM Amplifier
■
Output voltage control by I2C.
■
Built-in EEPROM.
■
Switching Frequency 750kHz (AVDD, VIO).
■
Switching Frequency 1MHz (VCORE, HAVDD).
Applications
■
TFT-LCD panel
Typical Application Circuit 1
(TOP
VIEW)
SW
SW
AVDD
VGH
Key Specifications
Input voltage range:
AVDD Output voltage range:
VIO Output voltage range:
HAVDD Output voltage range:
VGH Output voltage range:
VGL Output voltage range:
Switching Frequency:
Operating temperature range:
Package
VQFN48V7070A
8.6V to 14.0V
11.7V to 18.0V
2.2V to 3.7V
4.8V to 11.1V
25V to 40.5V
-10.2V to -4.0V
750kHz(Typ)
1MHz(Typ)
-40℃ to +105℃
W(Typ) x D(Typ) x H(Max)
7.00mm x 7.00mm x 1.0mm
HAVDD
VIN
SWB1
VGH
RE
VGHM
DRVP
N.C.
PGND3
VINB3
SWB3
DRVN
VDD3
VGL
EN
VGL
PGND2
PGATE
AVDDS
SWO
SWI
SW
SW
VCORE
SWB2
VDD2
VINB2
VINB1
VINB1
AVDD
VIN
BM81004MUV
N.C.
SWB1
PGND
PGND
VL
COMP
AGND
CTRL
INN
VIO
SWB1
AMPGND
AMP4
AMP3
AMP2
AMP1
VDD1
AVIN
SDA
SCL
PG
A0
HVLDO
VIN
AVDD
Figure 1.
Application Circuit 1
○Product
structure:Silicon monolithic chip
○
This chip is not designed for protection against ratio active rays.
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VCOM
HVCC
BM81004MUV
Typical Application Circuit 2
(TOP
VIEW)
SW
SW
AVDD
VGH
HAVDD
VIN
SWB1
VDD3
PGND3
SWB3
N.C.
VINB3
VGH
VGHM
DRVN
DRVP
VGL
RE
EN
VGL
PGND2
PGATE
AVDDS
SWO
SWI
SW
SW
VCORE
SWB2
VDD2
VINB2
VINB1
VINB1
AVDD
VIN
BM81004MUV
N.C.
SWB1
PGND
PGND
VL
COMP
AGND
CTRL
VIO
SWB1
AMPGND
AMP4
AMP3
HVLDO
VCOM
HVCC
AMP2
AMP1
VDD1
AVIN
SDA
SCL
VIN
AVDD
Figure 2. Application Circuit 2
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BM81004MUV
Contents
General Description ........................................................................................................................................................................ 1
Features.......................................................................................................................................................................................... 1
Applications .................................................................................................................................................................................... 1
Typical Application Circuit 1 ............................................................................................................................................................ 1
Key Specifications........................................................................................................................................................................... 1
Package .......................................................................................................................................................................................... 1
Typical Application Circuit 2 ............................................................................................................................................................ 2
Pin Configuration ............................................................................................................................................................................ 4
Pin Description................................................................................................................................................................................ 4
Block Diagram ................................................................................................................................................................................ 5
Description of each Block ............................................................................................................................................................... 6
Absolute Maximum Ratings ............................................................................................................................................................ 7
Recommended Operating Ranges ................................................................................................................................................. 7
Electrical Characteristics................................................................................................................................................................. 8
Typical Performance Curves ......................................................................................................................................................... 12
Timing Chart ................................................................................................................................................................................. 24
Example Application ..................................................................................................................................................................... 25
Protection function explanation of each block ............................................................................................................................... 26
Protection function list ................................................................................................................................................................... 29
Serial transmission ....................................................................................................................................................................... 30
Register Map ................................................................................................................................................................................ 33
Command Table 1 ......................................................................................................................................................................... 34
Command Table 2 ......................................................................................................................................................................... 35
Selecting Application Components ............................................................................................................................................... 36
Layout Guideline ............................................................................................................................................................................. 41
Power Dissipation ......................................................................................................................................................................... 41
I/O Equivalence Circuit ................................................................................................................................................................. 42
Operational Notes ......................................................................................................................................................................... 45
Ordering Information ..................................................................................................................................................................... 47
Marking Diagram .......................................................................................................................................................................... 47
Physical Dimension Tape and Reel Information ............................................................................................................................ 48
Revision history ............................................................................................................................................................................ 49
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BM81004MUV
Pin Configuration
(TOP VIEW)
PGND3
VGHM
VINB3
SWB3
DRVN
26
DRVP
VDD3
VGH
N.C.
36
35
34
33
32
31
30
29
28
27
PGND2
SWB2
VDD2
VINB2
VINB1
VINB1
N.C.
SWB1
SWB1
AMPGND
AMP4
AMP3
VGL
25
RE
EN
37
24
PGATE
AVDDS
SWO
SWI
SW
SW
PGND
PGND
VL
COMP
AGND
CTRL
38
23
39
22
40
21
41
20
42
19
Thermal Pad
43
18
44
17
45
16
46
15
47
14
48
13
1
2
3
4
5
6
7
8
9
10
11
12
HVLDO
VCOM
AMP2
HVCC
AMP1
VDD1
AVIN
SDA
SCL
Figure 3. Pin Configuration
Pin Description
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SYMBOL
AMP2
AMP1
VDD1
PG
SDA
SCL
A0
AVIN
HVLDO
HVCC
VCOM
INN
CTRL
AGND
COMP
VL
PGND
PGND
SW
SW
SWI
SWO
AVDDS
PGATE
FUNCTION
Gamma amplifier output pin 2
Gamma amplifier output pin 1
Step-down DC/DC output pin 1
Power GOOD signal output pin
Serial data input pin
Serial clock input pin
I2C address selected pin
Power supply input pin
High Voltage LDO output pin
VCOM and Gamma power supply pin
VCOM amplifier output pin
VCOM amplifier feedback pin
GPM control pin
Analog GND pin
Error amplifier output pin
Internal REG output pin
Step-up DC/DC GND pin
Step-up DC/DC GND pin
Step-up DC/DC switching pin
Step-up DC/DC switching pin
Load switch input pin
Load switch output pin
Step-up DC/DC feedback pin
Load switch gate drive pin
PIN No.
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SYMBOL
VGL
DRVN
DRVP
VGH
VGHM
RE
VINB3
N.C.
SWB3
PGND3
VDD3
EN
PGND2
SWB2
VDD2
VINB2
VINB1
VINB1
N.C.
SWB1
SWB1
AMPGND
AMP4
AMP3
FUNCTION
Negative charge pump output pin
Negative charge pump drive pin
Positive charge pump drive pin
Positive charge pump output pin
GPM output pin
GPM Slope adjustment pin
Power supply pin for Step-down DC/DC 3
INN
PG
A0
―
Step-down DC/DC switching pin 3
Step-down DC/DC GND pin 3
Step-down DC/DC output pin 3
Enable pin
Step-down DC/DC GND pin 2
Step-down DC/DC switching pin 2
Step-down DC/DC output pin 2
Power supply pin for Step-down DC/DC 2
Power supply pin for Step-down DC/DC 1
Power supply pin for Step-down DC/DC 1
―
Step-down DC/DC switching pin 1
Step-down DC/DC switching pin 1
Gamma amplifier GND pin
Gamma amplifier output pin 4
Gamma amplifier output pin 3
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BM81004MUV
Block Diagram
AVDD
HVCC
HVLDO
HVLDO
HVCC
HVLDO
HVLDO
HVCC
+
OPAMP
-
COMP
PGATE
AVDDS
AVDD
VCOM
INN
HVCC
+
-
AMP1
+
-
AMP2
+
-
AMP3
+
-
AMP4
SWO
SWI
DAC
BOOST
CONVERTER
SW
PGND
VIN
VINB1
VIN
BUCK
CONVERTER 1
SWB1
VIO
AMPGND
VIN
VDD1
AVIN
VL
INTERNAL
REGULATOR
BUCK
CONVERTER 2
VIN
VINB2
VCORE
SWB2
PGND2
EEPROM
VDD2
VINB3
SDA
SCL
A0
BUCK
CONVERTER 3
I2C
INTERFACE
DAC
SWB3
HAVDD
PGND3
VDD3
DRVP
EN
SEQUENCE
CONTROL
VGH
REGULATOR
SW
AVDD
PG
SW
VGH
VGH
VGL
GPM
VGHM
RE
AGND
VGL
DRVN
CTRL
VGL
SWB1
Figure 4. Block Diagram
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