Datasheet LT3652 (Analog Devices) - 22

LT3652
TYPICAL APPLICATIONS 2-Cell Li-Ion Charger (8.3V at 2A) With 3 Hour Timer Termination Powered by Inexpensive 12V at 1A Unregulated Wall Adapter; VIN_REG Loop Servos Maximum Charge Current to Prevent AC Adapter Output from Drooping Lower than 12V
MBRS340 D3 AC ADAPTER INPUT 12V AT 1A V SW IN SH-DC121000 330k LT3652 1µF 1N914 V VISHAY MBRS340 IN_REG BOOST 8.2µH 1HLP-2525CZ8R2M11 47k 0.05 SHDN SYSTEM 1µF SENSE 10k LOAD CHRG 51k BAT + 10k NTC 626k 10µF 100µF FAULT V TIMER FB 412k 10µF 0.68µF + R1 10k B = 3380 REMOVABLE 2-CELL Li-Ion PACK
SH-DC121000
(8.3V FLOAT)
AC Adapter V vs I Characteristics
3652 TA02a 20 18 16 14 12 10 8 OUTPUT VOLTAGE (V) 6 4 2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 OUTPUT CURRENT (A) 3652 TA02b
Basic 2A 1-Cell LiFePO4 Charger (3.6V Float) With C/10 Termination
CMSH3-40MA VIN V SW IN 5V TO 32V (40V MAX) LT3652 1µF CMDSH2-4L VIN_REG 5.6µH BOOST 0.05 SHDN SENSE SYSTEM 10µF LOAD CHRG BAT C3 FAULT NTC 30k 10µF TIMER + VFB 223k 3652 TA03 330k LiFePO4 CELL 3652fe 22 For more information www.linear.com/LT3652 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Typical Application Related Parts