LTC3230 - 5-LED Main/Sub Display Driver with Dual LDO

Features
  • Low Noise Charge Pump Provides High Efficiency with Automatic Mode Switching
  • Multimode Operation: 1x, 1.5x, 2x
  • Full-Scale Current Set Resistor
  • Up to 125mA Total LED Current
  • Single Wire Enable/Brightness Control for Main and Sub Display LEDs
  • 32:1 Linear LED Brightness Control
  • Dual 200mA Linear Regulators
  • Four 25mA Low Dropout Main LED Current Sources
  • One 25mA Low Dropout Sub LED Current Source
  • Low Noise Constant Frequency Operation
  • Low Shutdown Current: 3µA
  • Internal Soft-Start Limits Inrush Current During Start-Up and Mode Switching
  • Open/Short LED Protection
  • No Inductors
  • 20-Lead 3mm x 3mm QFN Package
Typical Application

Applications
  • Multi-LED Driver and Dual LDO Supplies for Cell Phone, PDA, Digital Camera and PND Applications
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC3230EUD#PBF3x3 QFN-20E$2.21$1.55
LTC3230EUD#TRPBF3x3 QFN-20E$1.61
Demo Boards
Part NumberDescriptionPrice
DC1217ALTC3230EUD | 5-LED Main/Aux Drv + Dual LDO in 3x3 QFNContact Factory
Companion Boards
Part NumberDescriptionPrice
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
Datasheet
Press Release
Related Product
LTC3230 - 5-LED Main/Sub Display Driver with Dual LDO
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LTC3230 Footprints and Symbols