Datasheet LTC4009, LTC4009-1, LTC4009-2 (Analog Devices) - 6

LTC4009 LTC4009-1/LTC4009-2 Typical perForMance characTerisTics
(TA = 25°C unless otherwise noted. DIN = SSB44, L = IHLP-2525 6.8µH) Battery Load Dump Charge Current Accuracy Charge Current Line Regulation
5 0.5 RSENSE = 33mΩ BAT = 6V R 0.4 2A IN = 3.01k RSENSE = 33mΩ 4 R TAGE 0.3 IN = 3.01k /DIV) 12.1V 1A 3 DCIN = 24V 0.2 ICHG = 1A Y VOL 1A RPROG = 35.7k 0.1 TTER (500mV 3A 2 BA RECONNECT 0 ICHG = 2A LOAD 1 STATE DISCONNECT –0.1 I CLP = 20V TIME (1ms/DIV) 4009 G06 CHG = 3A –0.2 0 VOUT = 12.3V CHARGE CURRENT ERROR (%) CHARGE CURRENT ERROR (%) –0.3 –1 DCIN = 12V R –0.4 PROG = 26.7k –2 –0.5 0 2 4 6 8 10 12 14 16 18 20 22 24 5 10 15 20 25 BAT (V) DCIN (V) 4009 G15 4009 G07
Charge Current Load Regulation Input Current Limit PWM Soft-Start
3.5 3.0 ICHG = 3A I 3.0 2.5 CHG IIN 2A/DIV 2.5 2.0 I ITH CHG = 2A ICHG 2.0 1.5 1V/DIV 1.5 1.0 PROG ICHG = 1A 1V/DIV 1.0 CURRENT (A) 0.5 2.5A BULK CHARGE 2.1A INPUT CURRENT LIMIT CHARGE CURRENT (A) SHDN 0.5 0 5V/DIV DCIN = 20V 0 TIME (500µs/DIV) 4009 G10 R –0.5 SENSE = 33mΩ ICL STATE RIN = 3.01k –0.5 –1.0 11.0 11.4 11.8 12.2 12.6 13.0 0 0.5 1.0 1.5 2.0 2.5 BAT (V) SYSTEM LOAD (A) 4009 G08 4009 G09
Gate Drive Non-Overlap PWM Frequency vs Duty Cycle
600 ICHG = 750mA /DIV) BGATE 500 400 300 TGATE 200 EXTERNAL FET DRIVE (1V PWM FREQUENCY (kHz) CLP = 6V TIME (80ns/DIV) 4009 G11 100 CLP = 12V CLP = 20V CLP = 25V 0 0 20 40 60 80 100 DUTY CYCLE (%) 4009 G12 4009fd Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Test Circuits Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts