LP55281 Datasheet | National Semiconductor

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 .. interface allows easy control of LP55281. Small Micro SMD or Micro SMDxt package together with minimum number of external ponents 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 patible interface 2 addresses in I2C patible 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 National Semiconductor® is a registered trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation .national. Connection Diagram .. 36-bump Micro SMD package, 3 - 3 - 0.6 mm body size, 0.5 mm pitch NS Package Number TLA36AAA 36-bump Micro SMDxt package, 3 - 3 - 0.65 mm body size, 0.5 mm pitch NS Package Number RLA36AAA Package Mark 36-bump Micro SMD package, 3 - 3 - 0.6 mm body size, 0.5 mm pitch NS Package Number TLA36AAA 36-bump Micro SMDxt package, 3 - 3 - 0.65 mm body size, 0.5 mm pitch NS Package Number RLA36AAA Ordering Information Order Number LP55281TL LP55281TLX LP55281RL LP55281RLX Package Marking D56B D56B D61B D61B Supplied As TNR 250 TNR 1000 TNR250 TNR1000 Spec/Flow No PB No PB No PB No PB .national. Pin Descriptions Pin 6F...