LP55281

LP55281 Quad RGB Driver June 2007 LP55281 Quad RGB Driver General Description LP55281 is a quad RGB LED driver for handheld devices. It can drive 4 RGB LED sets and a single fun light LED. The boost DC-DC converter drives high current loads with high efficiency. The RGB driver can drive individual color LEDs or RGB LEDs powered from boost output or external supply. Built-in audio synchronization feature allows user to synchronize the fun light LED to audio inputs. The flexible SPI/I2C www.DataSheet4U.com interface allows easy control of LP55281. Small Micro SMD or Micro SMDxt package together with minimum number of external components is a best fit for handheld devices. LP55281 has also a LED test feature, which can be used for example in production for checking the LED connections. Features ■ ■ ■ ■ ■ ■ ■ Audio synchronization for a single fun light LED 4 PWM controlled RGB LED drivers High efficiency Boost DC-DC converter SPI/I2C compatible interface 2 addresses in I2C compatible interface LED connectivity test through the serial interface Small 36-bump Micro SMD (3 mm x 3 mm x 0.6 mm) or 36-bump Micro SMDxt package (3 mm x 3 mm x 0.65 mm) Applications ■ Cellular Phones ■ PDAs, MP3 players Typical Application 20201101 National Semiconductor® is a registered trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation 202011 www.national.com LP55281 Connection Diagram www.DataSheet4U.com 20201171 36-bump Micro SMD package, 3 * 3 * ...