ncp5890 ON Semiconductor, ncp5890 Datasheet - Page 3

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

Photo Sense
SCL
SDA
Log
1
2
I2C Port
4
Low Pass
Filter
PHTIM
I−LED max
BOOST CONVERTER
I−LED min
GRDIMT
PHGAIN
PWM0
PWM1
PWM2
Figure 3. Basic NCP5890 Structure
1.3MHz oscillator
MONITORING
1 kHz oscillator
ANALOG
5 bits
http://onsemi.com
3 bits
DIGITAL COMPARATOR
3
& PROCESSING
High I−LED
COUNTER
DIGITAL COMPARATOR
DIGITAL
5 bits
Low I−LED
1
5 bits
I−LED CONTROL
PWM0 Drive
PWM1 Drive
PWM2 Drive
GND
I−LED