CAT4002A Overview
The CAT4002A and CAT4004A provide respectively two and four matched low dropout current sources to drive LEDs. The CAT400XA uses an external resistor RSET to set the current in the LED channels. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching.
CAT4002A Key Features
- 2 and 4 LED Current Sinks with Tight Matching
- 32 Dimming Levels
- Low Dropout Driver 50 mV at 20 mA
- No Switching Noise
- Shutdown Current less than 1 mA
- LED Current set by External Resistor
- Dimming via 1-wire EZDim Interface
- Thermal Shutdown Protection
- 6-lead SC-70, and 8-pad UDFN 2 mm x 2 mm Packages
- These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS