
Linear Technology
DESCRIPTION
The LTC®3212 is a low noise charge pump RGB LED driver capable of driving three LEDs up to 25mA each from a 2.7V to 5.5V input. Low external part count (one flying capacitor, two bypass capacitors and one to three programming resistors) makes the LTC3212 ideally suited for small, battery-powered applications.
FEATURES
■ Power and Current Control for Driving RGB LEDs
■ Individually Programmable Current Sources
■ 1x or 2x Mode, Low Noise, Constant Frequency
Charge Pump
■ Single Wire Enable Control for All LEDs
■ White Mode Adjusts R, G, B Currents for White Light
■ 25mA Maximum LED Current
■ VIN Range: 2.7V to 5.5V
■ Automatic Soft-Start, Mode Switching and Output
Disconnect in Shutdown Mode
■ Available in 12-Lead (3mm × 2mm) DFN Package
APPLICATIONS
■ Cellular Phones
■ Media Players
■ RGB Back Lights