CAT3661 LED Driver, 1-Channel Low-Power Description The CAT3661 is a high efficiency low power fractional charge pump that drives one LED with up to 5 mA of current. Softstart CAT3661 1 F 1 F VIN 1 F 1 M LED 1 F 1 M Low Battery Fault LED Fault ON/OFF 60 k Figure 1. Typical Application Circuit Table 1. ORDERING INFORMATION Part Number Lead Finish Package Shipping CAT3661HV3GT2 NiPdAu TQFN 2000 / Tape & Reel (PbFree) For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Table 2. ABSOLUTE MAXIMUM RATINGS Parameter Value Unit VIN voltage GND0.3 to 6 V VOUT voltage GND0.3 to 7 V EN, nFLTB, nFLTL, LED, RSET voltage (Note 1) GND0.3 to 6 V C1, C2 voltage GND0.3 to 7 V Storage Temperature Range 65 to +160 C Junction Temperature Range 40 to +150 C Lead Temperature 300 C ESD Rating HBM (Human Body Model) 2000 V ESD Rating MM (Machine Model) 200 V Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. EN, nFLTL, nFLTB, LED and RSET can be driven above VIN up to the absolute maximum voltage. Table 3. RECOMMENDED OPERATING CONDITIONS Parameter Value Unit VIN 2.0 to 5.5 V Ambient Temperature Range 40 to +85 C LED current 0.1 to 5 mA nFLTB, nFLTL pullup resistor current 0 to 1 mA LED Forward Voltage Range (V ) 1.3 to 4.2 V F Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability.