CAT3626 LED Driver, Charge Pump, 2 6-Channel, I C Interface Description The CAT3626 is a high efficiency 1x/1.5x fractional charge pump CAT3626 1 F 1 F pair A pair B pair C C1 C1+ C2 C2+ V IN VIN VOUT C IN 3 V to CAT3626 C 5.5 V OUT LEDA1 1 F LEDA2 1 F LEDB1 EN LEDB2 ENABLE 20 mA SDA LEDC1 2 I C Interface SCL LEDC2 GND Figure 1. Typical Application Circuit Table 1. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units VIN, LEDxx voltage 6 V VOUT, C1, C2 voltage 7 V EN, SDA, SCL voltage VIN + 0.7 V V Storage Temperature Range 65 to +160 C Junction Temperature Range 40 to +150 C Lead Temperature 300 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 2. RECOMMENDED OPERATING CONDITIONS Parameter Range Units VIN 3 to 5.5 V Ambient Temperature Range 40 to +85 C LED forward voltage Up to 4.2 V I per LED pin 0 to 32 mA LED NOTE: Typical application circuit with external components is shown above.