LP55281 - Quad RGB Driver from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Knowledge Base

Features
• Audio synchronization for a single fun light LED
• 4 PWM controlled RGB LED drivers
• High efficiency Boost DC-DC converter
• SPI/I 2C compatible interface
• 2 addresses in I 2C 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)

General Description

LP55281 is a quad RGB LED driver for handheld devices. More...


Applications

• Cellular Phones
• PDAs, MP3 players
  Typical Application
*click for larger image


ParametersValues
Regulated LEDs 12
LED Configuration Parallel
Current Matching 5%
Boost Type Inductive
Switching Frequency 2000 kHz
Switching Type PWM
Total LED Current 400 mA
Efficiency (peak) 88 %
PowerWise Technology Audio Adaptive RGB LED Driver
Boost Voltage Regulated
Supply Current 1 mA
Input Min Voltage 3 Volt
Input Max Voltage 5.5 Volt
OutputMax Voltage 5.3 Volt
PWM BrightCtrl Yes
Analog-V BrightCtrl No
Ambient Light Compensation No
RGB-LED Yes
Temperature Min -30 deg C
Temperature Max 85 deg C
RegType Lighting Management Unit
PowerWise Yes

  Block Diagram
*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LP55281 Quad RGB Driver 1482
Kbytes		 20-Jun-07 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LP55281RLEVQuad RGB Driver from the PowerWise® FamilyFull productionN/A
 
Buy Now 		1+$100.001-
6 weeksN/A
LP55281RLMICRO SMDXT36NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$1.60reel
of
250		XYTT
I D61B
6 weeksN/A
LP55281RLXMICRO SMDXT36NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$1.60reel
of
1000		XYTT
I D61B
6 weeksN/A
LP55281TLMICRO SMD36NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$1.60reel
of
250		XYTT
I D56B
6 weeksN/A
LP55281TLXMICRO SMD36NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$1.60reel
of
1000		XYTT
I D56B
6 weeksN/A

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/I 2C 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.

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1631: AN-1631 LP55281 Evaluation Kit 5177
Kbytes		 13-Jun-07 Download
AN-1631 (Chinese): AN-1631 LP55281 Evaluation Kit
 816 Kbytes  

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]