Power and Thermal Management
Analog Temperature Sensors
Battery Chargers
Charge Pumps
Digital Temperature Sensors
GSM Power Controllers
Hot Swap Controllers
LED Drivers 
Linear Regulators
MOSFET Drivers
Power Supply Controllers
Power Supply Sequencers
Supervisory
Switching Controllers
Switching Regulators
System Monitoring Products
Temperature Setpoint Controllers
LED Drivers Selection Table
  ADM8845 ADM8843 AD8240
Supply Voltage 2.6V to 5.5V 2.6V to 5.5V 9V to 27V
# LEDs 6 4 n/a
Shutdown (Y/N) Y Y Y
Current Accuracy 1% 0.3% n/a
Power Efficiency 88% 88% n/a
Brightness Control (PWM or Analog) Both Both PWM
Supply Current 2.6mA 2.6mA 300uA
Regulated Output Voltage n/a n/a 12V
PWM Frequency Range 100Hz to 200kHz 100Hz to 200kHz DC to 500Hz
Shutdown Current 5uA 10uA 10uA
Package 3mm x 3mm LFCSP 3mm x 3mm LFCSP MSOP