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BD8105FV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD8105FV
기능 LED driver
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BD8105FV 데이터시트, 핀배열, 회로
Power Management IC Series for Automotive Body Control
LED Driver
BD8105FV
No.09039EBT01
Description
The BD8105FV is a serial parallel control LED driver with 35V input voltage rating.
Responding to the 3-line serial data, it turns the 12ch open drain output on/off.
Due to its compact size, it is optimal for small spaces.
Features
1) Open Drain Output
2) 3-line Serial Control + Enable Signal
3) Internal Temperature Protection Circuit (TSD)
4) Cascade Connection Compatible
5) SSOP-B20W
6) Internal 12ch Power Transistor
Applications
These ICs can be used with car and consumer electronic.
Absolute Maximum Ratings (Ta=25)
Item
Symbol
Value
Unit
Power Supply Voltage
VCC
7
V
Output VoltagePin No : 49, 1116
VDmax
35
V
Input VoltagePin No : 1, 2, 3, 17, 18
VIN -0.3VCC
V
Power Dissipation
Pd
1187*
mW
Operating Temperature Range
Topr -40+105
Storage Temperature Range
Tstg -55+150
Drive Current (DC)
IomaxD
50
mA
Drive CurrentPulse
IomaxP
150**
mA
Junction Temperature
Tjmax
150
* Pd decreased at 9.50mW/for temperatures above Ta=25,mounted on 70×70×1.6mm Glass-epoxy PCB.
** Do not however exceed Pd. Time to impress200msec
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/12
2009.07 - Rev.B




BD8105FV pdf, 반도체, 판매, 대치품
BD8105FV
Block Diagram
Technical Note
SDWN
3
17 SERIN
LATCH
1
CLK
18
2 RST_B
VCC
19
10 GND
Pin Setup Diagram
BD8105FVSSOP-B20W
LATCH 1
RST_B 2
SDWN 3
D11 4
D10 5
D9 6
D8 7
D7 8
D6 9
GND 10
Fig.11
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
TSD
<11:0>
Serial
I/F
Driver
<11:0> <11:0> <11:0>
4 D11
5 D10
6 D9
7 D8
8 D7
9 D6
11 D5
12 D4
13 D3
14 D2
15 D1
16 D0
SEROUT
SEROUT
20
Fig.10
20 SEROUT
19 VCC
18 CLK
17 SERIN
16 D0
15 D1
14 D2
13 D3
12 D4
11 D5
Terminal NumberTerminal Name
Pin Terminal
Number Name
Function
1
LATCH
Latch Signal Input Terminal
H: Latches Data
2
RST_B
Reset Reversal Input Terminal
L: FF Data 0
3
SDWN
Shutdown Input Terminal
H: Output Off
4 D11 Drain Output Terminal 11
5 D10 Drain Output Terminal 10
6 D9 Drain Output Terminal 9
7 D8 Drain Output Terminal 8
8 D7 Drain Output Terminal 7
9 D6 Drain Output Terminal 6
10 GND Ground Terminal
11 D5 Drain Output Terminal 5
12 D4 Drain Output Terminal 4
13 D3 Drain Output Terminal 3
14 D2 Drain Output Terminal 2
15 D1 Drain Output Terminal 1
16 D0 Drain Output Terminal 0
17 SERIN Serial Data Input Terminal
18 CLK Clock Input Terminal
19
VCC
Supply Voltage Input Terminal
20 SEROUT Serial Data Output Terminal
4/12 2009.07 - Rev.B

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BD8105FV 전자부품, 판매, 대치품
BD8105FV
Technical Note
3Enable Signal
By applying voltage at least VCC×0.8 or more to the SDWN terminal, D0 (16 pin)~D11 (4 pin) become open forcibly.
At this time, the temperature protection circuit (TSD) stops. D11D0 become PWM operation by inputting PWM to
SDWN(3 pin).
4SEROUT
A cascade connection can be made (connecting at least 2 or more IC’s in serial).
Serial signal input from SERIN is transferred into receiver IC by the fall edge of the CLK signal.
Since this functionality gives enough margins for the setup time prior to the rise edge of the CLK signal on the receiver
IC (using the exact same CLK signal of sender IC), the application reliability can be improved as cascade connection
functionality.
LATCH
SERIN
CLK
SEROUT
d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0
1 2 3 4 5 6 7 8 9 10 11 12 13
D11
Fig.14
Cascade Connection
By using (at least) 2 ICs, each IC’s D11~D0, at (at least) 24ch, can be controlled by the 24-bit SERIN signal. The serial
data input to the sender IC can be transferred to the receiver IC by inputting 12CLK to the CLK terminal.
LATCH
SERIN
CLK
Send side IC
Receive side IC
d23 d22 d21 d20 d19 d18 d17 d16 d15 d14 d13 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1 d0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Fig.15
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
7/12
2009.07 - Rev.B

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BD8105FV

LED driver

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