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BD81842MUV-M PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD81842MUV-M
기능 Automotive Panel Power Management IC
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BD81842MUV-M 데이터시트, 핀배열, 회로
Datasheet
Power Supply IC Series for TFT-LCD Panels
Automotive Panel Power Management IC
BD81842MUV-M
General Description
The BD81842MUV-M is a power management IC for
TFT-LCD panels which are used in car navigation,
in-vehicle center panel, and instrument cluster.
Incorporates high-power FET with low on resistance for
large currents that employ high-power packages, thus
driving large current loads while suppressing the
generation of heat. A charge pump controller is
incorporated as well, thus greatly reducing the number
of application components. Also Gate Shading Function
is included.
Key Specifications
Input voltage range :
AVDD Output voltage range :
SRC Output voltage range :
VCOM Output current :
Oscillator Frequency :
Operating temperature range :
2.0V to 5.5V
6.0V to 18V
12V to 34V
200mA (Typ.)
2.1MHz (Typ.)
-40to +105
Special Characteristics
FB Regulation voltage :
±3% (Ta=-40105)
Oscillator Frequency : ±10.5% (Ta=-40105)
Typical Application Circuit (TOP VIEW)
Applications
TFT-LCD Panels which are used in car navigation,
in-vehicle center panel, and instrument cluster.
Features
AEC-Q100 Qualified(Note 1)
Boost DC/DC converter; 18 V / 2.5 A switch current.
Switching frequency: 2.1 MHz
Operational Amplifier (short current 200mA)
Incorporates Positive / Negative Charge-pump
Controllers.
Gate Shading Function
Protection circuits:
Under Voltage Lockout
Protection Circuit
Thermal Shutdown Circuit (Latch Mode)
Over Current Protection Circuit (AVDD)
Timer Latch Mode Short Circuit Protection (AVDD
SRC /VGL)
Over / Under Voltage Protection Circuit for Boost
DC/DC Output
No SCP time included (185ms from UVLO-off)
(Note1: Grade 2)
Package
VQFN24SV4040
TDK
VIN SLF7055T-100M2R5(10μH,2.5A)
W(Typ.) x D(Typ.) x H(Max.)
4.0mm x 4.0mm x 1.0mm
10uF
10uF
RSX301LA-30
10V/0.5Amax
AVDD
5.5V
VCOM
AVDD
18k
22k
1uF
AVDD
0.1uF
DA227
0.1uF
0.1uF
DA227
33nF
24
SRC GSOUT
1k
23 22
21 20
1
INP
2
INN
3
VCOM
4
AGND1
5
AVDD
6
DRP
19
18
PGND
FB 17
16
COMP
15
RSTIN
14
AGND2
VIN 13
78
9 10
CTL
11 12
10uF 10uF 10uF
91k
13k
24k
10k 10k 2.2nF
VIN
3.3V
1uF
10k RST
20V/20mA max
SRC
1uF 150k
10k
0.1uF
1uF
16k 0.22μF
120k
VGL
DA227
-7.1V/20mA max
1uF
Figure 1. Application Circuit
Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/31
TSZ02201-0313AAF00540-1-2
23. Jun. 2016 Rev.002




BD81842MUV-M pdf, 반도체, 판매, 대치품
BD81842MUV-M
Block Diagram
VREF
12
(1.25V)
Reference
Voltage
Error Amplifier
FB
17
1.25V
COMP
16
Oscillator
13
VIN
0.265V
Fall Fall/Thermal
Control
Comparator
Digital Control
Block
Sequence
Control
Current Sense and
Limit
Datasheet
SW
20
PGND1
18
PGND2
19
AVDD
5
FBN
11
0.265V
Negative
Charge Pump
FBP
10
1.25V
Positive
Charge pump
INN
2
INP
1
DLY
24
CTL
8
AVDD
High Voltage
Switch Control
RE
21
GSOUT
22
RSTIN
15
1.25V
185ms
Figure 3. Block Diagram
AVDD
AGND1
AVDD
AGND1
DRN
7
DRP
6
VCOM
3
AGND1
4
SRC
23
RST
9
AGND2
14
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/31
TSZ02201-0313AAF00540-1-2
23. Jun. 2016 Rev.002

4페이지










BD81842MUV-M 전자부품, 판매, 대치품
BD81842MUV-M
Datasheet
Electrical characteristics (unless otherwise specified VIN = 3.3V, AVDD = 10V and Ta=25)
Parameter
Limits
Symbol
Unit
Min Typ Max
Condition
GENERAL
Circuit Current
Under Voltage Lockout Threshold
Internal Reference Output
Voltage
Thermal Shutdown (rising)
Duration to Trigger Fault
Condition
BOOST CONVERTER (AVDD)
IVIN
VUVLO
VREF
TSD
TSCP
-
1.75
1.225
1.2125
-
51
1.2
1.85
1.25
1.25
160
63
3
1.95
1.275
1.2875
-
75
mA
No Switching
Ta=-40105
V
VIN rising
Ta=-40105
V
No load
Ta=25
V
No load
Ta=-40105
Junction Temp
ms
FB , FBP or FBN
below threshold
FB Regulation Voltage
1.2375 1.25 1.2625 V Ta=25
VFB
1.2125 1.25 1.2875 V Ta=-40105
FB Fault Trip Level
FB Input Bias Current
SW Leakage Current
VTL_FB 0.9 1.0 1.1 V FB falling
IFB
-
0.1
2
µA
FB= 1.5V
Ta=-40105
ISW_L
-
0
10
µA
SW=20V
Ta=-40105
Maximum switching Duty Cycle
MDUTY
85
90
95 % FB= 1.0V
SW ON-Resistance
RSW - 200 250 mΩ SW= 200mA
SW Current Limit
Over Voltage Protection
Under Voltage Protection
ISWLIM 2.5 4.5 6.5 A Ta=-40105
VOVP 18 20 22 V AVDD rising
VUVP 1 1.3 3 V AVDD falling
BOOST Soft Start Time
Oscillator frequency
TSS_FB
FSW
12.5
1.9
1.88
15.5
2.1
2.1
18.5 ms Ta=-40105
2.3 MHz Ta=25
2.32 MHz Ta=-40105
RESET
RST Output Low Voltage
RSTIN Threshold Voltage
RSTIN Input Current
RST Blanking Time
Operational Amp rifer
VRST
VTH_L
IRSTIN
TNO_SCP
-
1.18
-
165
0.05
1.25
0
185
0.2
1.32
6
205
V RST =1.2mA
V
RSTIN rising
Ta=-40105
µA
RSTIN=0 to VIN-0.3
Ta=-40105
ms
No SCP Zone
Ta=-40105
Input Range
Offset Voltage
Input Current
Output Swing Voltage
(INP= 5.0V)
Short Circuit Current
Slew Rate
VRANGE
VOS
IINP
VOH
VOL
ISHT_VCOM
SR
0
-
-
-
4.94
-
10
-
AVDD
V
2 15 mV INP= 5.0V
0
3
µA
INP= 5.0V
Ta=-40105
5.03 5.06 V VCOM = +50mA
4.97 - V VCOM = -50mA
200 400 mA INP= 5.0V
40 250 V/us
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/31
TSZ02201-0313AAF00540-1-2
23. Jun. 2016 Rev.002

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BD81842MUV-M

Automotive Panel Power Management IC

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