ncp5890 ON Semiconductor, ncp5890 Datasheet - Page 2

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

Log
U3
1
SFH5711
2
4
R3 22k
GND
GND
220k
GND
R4
C4 2.2 mF
GND
12k
22k
R2
R1
I2CADR
AMBS
AGND
GND
SCL
SDA
VSB
8
6
1
2
IREF
7
4
5
3
IPK
Under Voltage
4.7uF/6.3V
Detection
1Hz
I−PEAK
REFERENCE
DIGITAL CONTROL
GND
REF.
Thermal Shutdown
I−LED
I2C Port
MONITORING
Figure 2. Simplified Block Diagram
C1
160 Hz
AMBIENT
LIGHT
Vbat
http://onsemi.com
Gradual Dimming
CONTROLLER
PWM BOOST
Embedded
15
+Vbat
2
160 Hz
160 Hz
I−LED
160 Hz
4.7uH
PWM3
PWM1
PWM2
L1
GND
GND
Lx
13
OVP Detection
GND
NSR0240P2
D8
PWM2
PWM3
PWM1
PGND
FB
16
14
12
11
10
9
Vos
D1
D5
D2
D3
D4
D6
GND
C2 1.0 mF/50 V
Max = 25 mA
I−Load
400 mV max
Vdrop =
GND