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NCP1840 - 8-Channel Programmable LED Driver

General Description

Pin 1 Name CPO 2 5, 11 14 LED1 LED8 6, 15, 21 7 8 9 10 16, 17, 19, 20 18 GND DVCC SCL SDA RBIAS C2 , C1

Charge pump output used as power supply to the LEDs.

Key Features

  • Individual Current Level Programmability (5.
  • bit) per Channel.
  • Individual PWM Programmability (6.
  • bit) per Channel.
  • I2C Serial Communication Interface for Programming.
  • Constant Current Regulated Outputs.
  • 30 mA Maximum per Channel.
  • Logarithmic Output Current Levels.
  • External Resistor for Setting Full.
  • Scale Current for all Channels.
  • Low Noise QUAD.
  • MODE Charge Pump Delivers > 90% Efficiency.

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Datasheet Details

Part number NCP1840
Manufacturer onsemi
File Size 375.59 KB
Description 8-Channel Programmable LED Driver
Datasheet download datasheet NCP1840 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCP1840 8-Channel Programmable LED Driver 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.