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/Title (NCP1840 - 8-Channel Programmable LED Driver)
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BroadVision, Inc.
2020-10-16T11:13:36+08:00
2013-02-26T10:53:24-07:00
2020-10-16T11:13:36+08:00
application/pdf
NCP1840 - 8-Channel Programmable LED Driver
ON Semiconductor
The NCP1840 is a general purpose LED driver that allows for full
programmability of eight separate LED channels through a simple I2C
serial communication interface. The current through each of the
channels can be up to 30 mA and is controlled via constant current
regulation. Each channel has programmable Pulse−Width Modulation
(PWM) control along with programmable current control, allowing
for very flexible, optimized LED brightness and color control.
Logarithmic output current levels are achieved to best accommodate
natural eye viewing.
A QUAD−MODE® charge pump allows for higher forward voltage
LEDs and/or multiple LEDs in series per channel to be driven with a
low−voltage supply. This makes the NCP1840 capable of efficiently
driving LEDs in applications that are running off of low−voltage
processor supply levels along with battery−powered applications. Few
external components are required making this a very cost−effective
solution for multi−channel LED driving.
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