CAT4137TD-GT3 ON Semiconductor

CAT4137 White LED Driver, CMOS Boost Converter Description The CAT4137 is a DC/DC step-up converter that delivers a regulated output current. Operation at a constant switching frequency CAT4137 LD V V IN OUT 2.2 to 22 H 5.5 V C2 C1 SW 1 F 0.22 F VIN CAT4137 OFF SHDN FB ON V = 300 mV FB R1 GND 15 L: Murata LQH32CN220 D: Central CMDSH2-3 (rated 30 V) Figure 1. Typical Application Circuit Table 1. ABSOLUTE MAXIMUM RATINGS Parameter Rating Unit VIN, FB voltage 0.3 to +7 V SHDN voltage 0.3 to +7 V SW voltage 0.3 to +40 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 Unit VIN 2.2 to 5.5 V SW pin voltage 0 to 24 V Ambient Temperature Range 40 to +85 C LED Bias Current 1 to 30 mA