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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LP55281TL/NOPB Datenblatt(PDF) 1 Page - Texas Instruments |
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LP55281TL/NOPB Datenblatt(HTML) 1 Page - Texas Instruments |
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1 / 35 page  MCU R3 G3 B3 R4 G4 B4 IRGB IRT ASE2 AUDIO INPUTS LP55281 SW BATTERY FB VDDA VREF D1 VDD2 VDD1 GNDs SCK/SCL SI/A0 SS/SDA SO IF_SEL VDDIO RGB3 RGB4 RRT RRGB COUT 10 P F IMAX = 300...400 mA VOUT = 4...5.3V CVDD 100 nF Lboost CIN 10 P F CVDDA 1 é F CREF 100 nF CVDDIO 100 nF ALED RGB1 RGB2 R1 G1 B1 R2 G2 B2 ASE1 4.7 P H LP55281 www.ti.com SNVS458B – JUNE 2007 – REVISED JUNE 2007 LP55281 Quad RGB Driver Check for Samples: LP55281 1 FEATURES • Small 36-bump Micro SMD (3 mm x 3 mm x 0.6 mm) or 36-bump Micro SMDxt package (3 mm 23 • Audio synchronization for a single fun light x 3 mm x 0.65 mm) LED • 4 PWM controlled RGB LED drivers APPLICATIONS • High efficiency Boost DC-DC converter • Cellular Phones • SPI/I2C compatible interface • PDAs, MP3 players • 2 addresses in I2C compatible interface • LED connectivity test through the serial interface 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 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. Typical Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 National Semiconductor is a registered trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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