Linear-mode 5-Channel LED Driver

            • No noise, non pulsating LED current
            • High efficiency LED driver: 1x battery current
            • Ultra low dropout current sink
              • VIN operates down to VF+49mV @15.5mA
              • Up to 98% peak efficiency
            • Low supply current in all conditions: 190µA typical
            • Easy 32-level current setting via one pin serial bus control
            • ±1.5% typ / ±7% max current accuracy
            • Fast, smooth start up
            • No inrush current; no overshoot
            • VIN Range: 2.7 to 5.5V
            • 0.1 µA Shutdown Current
            • No external components required
            • Automatic Soft-Start
            • Pb-free Packages: TDFN22-8, SOT23-8
            • RoHS and Green compliant
            • -40 to +85˚C Temperature Range


  • White LED backlighting
  • Keypad LEDs
  • RGB LEDs and other LED lighting
  • Constant current outputs
  • MP3 players

Key Electrical Specifications

Vin(Min) Vin(Max)
Output Current
Per Channel(Max)


Channels Control Type Package
2.7V 5.5V 4 4 Serial Digital  SOT23-8;TDFN22-8

Typical Application Diagram