© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 1
1 Publication Order Number:
NCP5608/D
NCP5608
Multiple LED Charge Pump
Driver
The NCP5608 is a high efficiency boost converter operating in
current loop, based on a charge pump multi mode, to drive White
LED. The current mode regulation allows a uniform and
programmable brightness of the LEDs. The chip has been optimized
for small ceramic capacitors, capable to supply up to 2.0 W output
power.
Features
• 2.7 to 5.5 V Input Voltage Range
• Up to 500 mA Output Current
• Capable to Drive 8 LED
• Multi Mode Charge Pump Based Converter
• I2C Serial Link Protocol
• Consistent High Efficiency
• Independently Block Programmable Output Currents
• Programmable 3 or 4 Operating Backlight LED at Zero Extra
Losses
• Constant Output Current Regulation
• Built−in Dimming Function
• Tight Automatic LED Current Matching
• Thermal Shutdown Protection
• Low Battery Return Noise
• This is a Pb−Free Device*
Typical Applications
• LED Display Back Light Control
• Keyboard Back Light
• High Power Photo Flash
• Multiple Displays
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
24 PIN TQFN (4x4)
MT SUFFIX
CASE 511AA
MARKING
DIAGRAM
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
http://onsemi.com
PIN CONNECTIONS
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
NCP
5608
ALYW
G
1
24
PGN
C1N
C1P
V
OUT
C3N
C3P
C2P
C2N
LED3
LED2
LED1
LED4
LED5
24 23 22 21 20 19
7 8 9 10 11 12
18
17
16
15
14
13
1
2
3
4
5
6
LED7
LED8
CCMP
IREFBK
IREFFL
AGND
SCL
SDA
PVbat
AVbat
LED6
Device Package Shipping
†
ORDERING INFORMATION
NCP5608MTR2G TQFN24
(Pb−Free)
4000 / Tape & Ree
