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BD8105FV
Technical Note
● Block Operation
1)Serial I/F
The I/F is a 3-line serial (LATCH, CLK, SERIN) style.
12-bit output ON/OFF can be set-up. This is composed of shift register. + 12-bit register.
2)Driver
It is a 12-bit open drain output.
3)TSD (Thermal Shut Down)
To prevent heat damage and overheating, when the chip temperature goes over approximately 175 ℃, the output turns
off. When the temperature goes back down, normal operation resumes.
However, the intended use of the temperature
protection circuit is to protect the IC, so please construct thermal design with the junction temperature Tjmax under
150 ℃ .
● Application Circuit
VCC
10uF
VBAT
10uF
↓ IF
Rres
VF
VCC
D0
Micro-
computer
SDWN
LATCH
RST_B
CLK
SERIN
SEROUT
GND
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
VCC
10uF
VCC
SDWN
LATCH
RST_B
CLK
SERIN
SEROUT
GND
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
Fig.12
IF=
VBAT - VF
Rres + RON
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
5/12
2011.05 - Rev.C
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