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LP3942 - The Dual RGB LED Controller

Description

The LP3942 is an integrated stand-alone RGB LED controller with a high efficiency and low noise programmable 1.5x and 2x charge pump.

The RGB LEDs are controlled through the low voltage SPI interface.

RGB programmability allows unique color and brightness control with both RGB outputs.

Features

  • n Pre-regulated 1.5x and 2x charge pump with regulated output (4.5V and 5.0V) n 2 separately controlled PWM RGB LED drivers with programmable color and brightness n Overlapping and non-overlapping RGB mode n Wide input voltage range 3V.
  • 5.0V n Output current up to 120 mA n Low voltage SPI interface n Programmable low current Standby mode n Tiny LLP24 package (5mm.
  • 4mm.
  • 0.8mm).

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Full PDF Text Transcription

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PRELIMINARY www.DataSheet4U.com November 2004 LP3942 The Dual RGB LED Controller with 1.5x/2x Charge Pump and SPI Interface LP3942 The Dual RGB LED Controller with 1.5x/2x Charge Pump and SPI Interface General Description The LP3942 is an integrated stand-alone RGB LED controller with a high efficiency and low noise programmable 1.5x and 2x charge pump. The RGB LEDs are controlled through the low voltage SPI interface. RGB programmability allows unique color and brightness control with both RGB outputs. The color control has preselected color settings for color blending. The LED current control is done using constant current sinks that can be also used as switches. The nonoverlapping RGB output PWM control minimizes the input noise.
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