BD9415FS
3.1 Application Circuit Example
An example application using the BD9415FS.
3.1.1 Basic Application Example
VIN
+
VCC
CVCC
32
31
30
29
1
2
3
4
5
6
7
8
AGND
SSFB
RT
VCC
FAILB
UVLO
REG90
CREG90
DUTYP
PWM4 28
PWM3 27
PWM2 26
PWM4
PWM3
PWM2
PWM1
STB
N
STB
REG90
REG90
PGND
CS
25
PWM1
LSP 24
9
DUTYON
OVP
23
VREF
10
11
12
13
14
15
16
22
G4
S1
21
LED1
LED4
20
G1
S4
19
S2
G3
18
LED2
G2
LED3
17
S3
Figure 10. Basic Application Example
3.1.2 Application Example of Unused CH
VCC
+
( )
CVCC
32
31
30
29
1
2
3
4
5
6
7
8
AGND
SSFB
RT
VCC
FAILB
UVLO
REG90
CREG90
DUTYP
PWM4 28
PWM3 27
PWM2 26
PWM4
STB
N
STB
REG90
PWM3
PWM2
PWM1
REG90
PGND
CS
25
PWM1
LSP 24
9
DUTYON
OVP
23
VREF
10
11
12
13
14
15
16
22
G4
S1
21
LED1
LED4
20
G1
S4
19
S2
G3
LEDunused
18
LEDunused
LED2
G2
LED3
17
S3
Figure 11. Application Example of Unused CH
When an LED terminal was unused, please dispose the unused CH as follows.
・Please input lower than 3.0V (typical) of voltage to a LEDx pin (ex. 1.0 to 2.0V).
・Gx pin, Sx pin is short
・Unused PWMx = L
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TSZ02201-0F2F0C100140-1-2
23.May.2016 Rev.001
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