Datasheet LT8331 (Analog Devices) - 25

LT8331
TYPICAL APPLICATIONS 4.5V to 80V Input, 12V SEPIC Converter
L1 C5 33μH 1µF D1 • VIN VOUT = 12V 4.5V TO C1 75mA AT VIN = 4.5V 80V 1µF L2 C3 120mA AT V R3 IN = 12V ×2 V 33μH 22µF 120mA AT VIN = 24V 1M IN SW1-2 LT8331 • 120mA AT VIN = 48V 120mA AT VIN = 80V EN/UVLO R1 1M INTVCC SYNC/MODE FBX GND BIAS VOUT R4 R2 787k INTV INTVCC 154k RT SS CC C2 R5 C4 1µF 63.4k 0.1µF 8331 TA07 450kHz D1: ROHM RB578VAM100TR C3: MURATA GRM32ER71E226KE15L L1, L2: COILTRONICS DRQ74-330 C5: MURATA GRM31CR72A105KA01L C1: MURATA GRM32ER72A105KA01L
4.5V to 80V Input, 5V SEPIC Converter
L1 C5 33μH 1µF D1 • VIN VOUT = 5V 4.5V TO C1 130mA AT VIN = 4.5V C3 80V 1µF L2 175mA AT V R3 IN = 12V 47µF V 33μH 180mA AT VIN = 24V 1M IN SW1-2 ×2 LT8331 • 180mA AT VIN = 48V 180mA AT VIN = 80V EN/UVLO R1 1M INTVCC SYNC/MODE FBX GND BIAS VOUT R4 R2 787k INTV INTVCC 464k RT SS CC C2 R5 C4 1µF 100k 0.1µF 8331 TA08 300kHz D1: ROHM RB578VAM100TR C3: MURATA GRM31CR61A476ME15L L1, L2: COILTRONICS DRQ74-330 C5: MURATA GRM31CR72A105KA01L C1: MURATA GRM32ER72A105KA01L Rev. C For more information www.analog.com 25 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts