NCV78663 Datasheet, PDF (1/37 Pages) ON Semiconductor – Power Ballast and Dual LED Driver

NCV78663
Power Ballast and Dual LED
Driver for Automotive Front
Lighting
The NCV78663 is a single−chip and high efficient smart Power
ballast and Dual LED DRIVER designed for automotive front lighting
applications like high beam, low beam, daytime running light (DRL),
turn indicator, fog light, static cornering, and so on.
The NCV78663 is a best fit for high current LEDs and provides a
complete solution to drive two strings up to 60 V, by means of two
internal independent buck switch channels, with a minimum of
external components.
For each channel, the output current and voltage can be customized
according to the application requirements. Diagnostic feature for
automotive front lighting is provided on−chip.
The device integrates a voltage booster controller, realizing a unique
input current filter with a limited number of externals.
The NCV78663 can be used in stand−alone mode or together with a
companion microcontroller allowing maximum flexibility. Depending
on the voltage and current of the connected LED string, the LED
ballast parameters can be adapted by writing the SPI settings in the
device, as such that no hardware changes are required.
Features
• Single Chip Boost−Buck Solution
• Two Independent LED Strings Up to 60 V
• High Overall Efficiency
• Minimum of External Components
• Active Input Filter with Low Current Ripple from Battery
• Integrated Switched Mode Buck Current Regulator
• Two Integrated Buck Switches with 1.4 A Peak Current Capability
• Integrated Boost Controller
• Programmable Input Current Limitation
• Average Current Regulation Through the LEDs
• High Operating Switching Frequencies to Reduce Inductor Sizes
• Integrated PWM Dimming with Wide Frequency Range
• Low EMC Emission for LED Switching and Dimming
• SPI Interface for Optional External mC and Dynamic Control of
System Parameters
• This is a Pb−Free Device
Typical Applications
• High Beam
• Low Beam
• DRL
• Position or Park light
• Turn Indicator
• Fog Light
• Static Cornering
http://onsemi.com
MARKING
DIAGRAM
SSOP36 EP
CASE 940AB
NCV78663−0
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 36 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
August, 2013 − Rev. 1
Publication Order Number:
NCV78663/D