NCV78723 Datasheet, PDF (1/32 Pages) ON Semiconductor – High Efficiency Buck Dual LED Driver with Integrated Current Sensing

NCV78723
High Efficiency Buck Dual
LED Driver with Integrated
Current Sensing for
Automotive Front Lighting
The NCV78723 is a single-chip and high efficient Buck Dual 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 NCV78723 is in particular designed for
high current LEDs and provides a complete solution to drive 2 LED
strings of up-to 60 V. It includes 2 independent current regulators for
the LED strings and required diagnostic features for automotive front
lighting with a minimum of external components – the chip doesn’t
need any external sense resistor for the buck current regulation.
The available output current and voltages can be customized per
individual LED string. When more than 2 LED channels are required
on 1 module, then 2, 3 or more devices NCV78723 can be combined;
also with NCV78713 device – the derivative of the NCV78723
incorporating Buck Single LED Driver. Thanks to the SPI
programmability, one single hardware configuration can support
various application platforms.
Features
• Single Chip
• Buck Topology
• 2 LED Strings up-to 60 V
• High Current Capability up to 1.6 A DC per Output
• High Overall Efficiency
• Minimum of External Components
• Integrated High Accuracy Current Sensing
• Integrated Switched Mode Buck Current Regulator
• Average Current Regulation through the LEDs
• High Operating Frequencies to Reduce Inductor Sizes
• Low EMC Emission for LED Switching and Dimming
• SPI Interface for Dynamic Control of System Parameters
• Fail Safe Operating (FSO) Mode, Stand-Alone Mode
Typical Applications
• High Beam
• Low Beam
• DRL
• Position or Park Light
• Turn Indicator
• Fog
• Static Cornering
www.onsemi.com
1 24
QFN24
CASE 485CS
MARKING DIAGRAM
1
N78723−0
AWLYYWWG
G
N78723 = Specific Device Code
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information on page 31 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
November, 2015 − Rev. 2
Publication Order Number:
NCV78723/D