ncp5890 ON Semiconductor, ncp5890 Datasheet - Page 17

• Manufacturer Part Number: ncp5890
• Description: Light Management Ic Dedicated For Lcd Backlighting And Multi-led Fun Light Applications
• Manufacturer: ON Semiconductor

to 9.5 V and cannot accommodate over voltage during the operation.
In addition, the first PWM structure can control two LED in series as depicted in Figure 17. The next PWM pin is limited
SFH5711
SDA
SCL
Log
U3
GND
1
GND
2
IREF
4.7 mF/6.3 V
4
PWM#1 DRIVER
PWM#2 DRIVER
PWM#3 DRIVER
C4
R2
R1
GND
R4
C1
220 k
Figure 17. Basic PWM Internal Voltage Clamps
R3
2.2 mF
Figure 18. Serial PWM#1 Extension LED
22 k
+Vbat
12 k
56 k
GND
GND
15
1
2
3
4
5
7
6
Vbat
SCL
SDA
I2CADR
VSB
AMBS
IREF
IPK
AGND
Vout
http://onsemi.com
L1
NCP5890
8
16
GND
U1
4.7 mF
PGND
PWM1
PWM2
PWM3
17
14
Vos
GND
GND
FB
Lx
D1
I−Load Max = 25mA
13
16
12
11
10
9
DZ1
9.5V
DZ2
9.5V
DZ3
9.5V
MBR0540
D11
D2
PWM1
PWM2
PWM3
FB
D4
D8
D2
D3
D7
D1
D3
10
12
11
C2
D5
9
1.0 mF/50 V
GND
D6
D4
D5
D6
D7