NCV78703
Multiphase Booster LED
Driver for Automotive Front
Lighting
The NCV78703 is a single−chip and high efficient booster for smart
Power ballast and LED Driver designed for automotive front lighting
applications like high beam, low beam, DRL (daytime running light),
turn indicator, fog light, static cornering, etc. The NCV78703 is in
particular designed for high current LEDs and with NCV78723 (dual
channel buck)/713 (single channel) provides a complete solution to
drive multiple LED strings of up−to 60 V. It includes a current−mode
voltage boost controller which also acts as an input filter with a
minimum of external components. The available output voltage can be
customized. Two devices NCV78703 can be combined and the booster
circuits can operate together to function as a multiphase booster
(2−phase, 3−phase, 4−phase, 5−phase, 6−phase) in order to further
optimize the filtering effect of the booster and lower the total
application BOM cost for higher power. Thanks to the SPI
programmability, one single hardware configuration can support
various application platforms.
www.onsemi.com
24
1
24
1
QFN24
QFN24
MW SUFFIX
CASE 485L
MW SUFFIX
CASE 485CS
MARKING DIAGRAM
N703−1
ALYWG
G
Features
Case 485L
• Single Chip
• Multiphase Booster
N78703−0
AWLYYWWG
G
• High Overall Efficiency
• Minimum of External Components
• Active Input Filter with Low Current Ripple from Battery
• Integrated Boost Controller
• Programmable Input Current Limitation
• High Operating Frequencies to Reduce Inductor Sizes
• PCB Trace for Current Sense Shunt Resistor is Possible
• Low EMC Emission
• SPI Interface for Dynamic Control of System Parameters
• Fail Save Operating (FSO) Mode, Stand−Alone Mode
• Integrated Failure Diagnostic
Case 485CS
N703
= Specific Device Code
or N78703
A
= Assembly Location
L or WL = Wafer Lot
Y or YY = Year
W or WW = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
Typical Applications
ORDERING INFORMATION
See detailed ordering and shipping information on page 34 of
this data sheet.
• High Beam
• Low Beam
• DRL
• Position or Park Light
• Turn Indicator
• Fog
• Static Cornering
© Semiconductor Components Industries, LLC, 2016
1
Publication Order Number:
January, 2016 − Rev. 0
NCV78703/D