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© Semiconductor Components Industries, LLC, 2016
July, 2016 − Rev. 2
1 Publication Order Number:
EVBUM2297/D
NCV7683GEVB
NCV7683GEVB Evaluation
Board User'sManual
Eight (8) Channel Enhanced 100 mA
Linear Current Regulator and Controller
for Automotive LED Lighting in Daisy
Chain Sequencing Application
Evaluation Board User’s Manual
Description
Automotive Rear Combination LED Lighting systems
often require the electronics to execute a sequence lighting
event for a blinker function to indicate directional change in
movement. This evaluation board will demonstrate to the
user this functionality using NCV7683 devices in a daisy
chain fashion along with the typical DC current drive and
PWM demonstration.
The three typical control inputs into the system are
available through on−board switches or through the pin
connections to external controls. The three system control
inputs are the STOP, TAIL, and TURN functions. The STOP
function displays a 100% duty cycle current through the
LEDs. The TAIL function displays a programmable PWM
current through the LEDs. The TURN function displays the
sequence event through the 8 on−chip channels and through
a serial connection through a second series of 8 channels on
a second device.
Features
• Sequencing Functionality
• One Out, All Out (Latch Off) Optional Functionality
• STOP, TAIL, TURN (100% Duty Cycle, PWM,
Sequencing) Modes
• Flexibility for
♦ External LED Connections
♦ LED Current Programmability (RSTOP)
♦ LED PWM Programmability (RTAIL)
♦ Sequence Time Programmability
♦ Sequence Interval Programmability
♦ STOP, TAIL, TURN External Connections
♦ External DIAG Pin Connection
Figure 1. Evaluation Board Picture
www.onsemi.com
EVAL BOARD USER’S MANUAL
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