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LTC4101 Datasheet(PDF) 6 Page - Linear Technology |
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LTC4101 Datasheet(HTML) 6 Page - Linear Technology |
6 / 30 page LTC4101 6 4101fa TYPICAL PERFORMANCE CHARACTERISTICS Disconnect/Reconnect Battery (Load Dump) Battery Leakage Current vs Battery Voltage Efficiency at VPROG = 4.208V SMBus Accelerator Operation Low Current Operation INFET Response Time to Reverse Current Output Voltage vs Output Current PWM Frequency vs Duty Cycle TA = 25°C, unless otherwise noted. TEST PERFORMED ON DEMOBOARD VIN = 15VDC CHARGER = ON ICHARGE = <10mA Vs OF PFET (5V/DIV) Id (REVERSE) OF PFET (5A/DIV) Vgs OF PFET (2V/DIV) 4101 G01 VCHARGE = 4.2V INFET = 1/2 Si4925DY Vgs = 0 Vs = 0V Id = 0A 1.25μs/DIV OUTPUT CURRENT (A) 0 0.5 1.0 2.0 3.0 4.0 1.5 2.5 3.5 4.5 4101 G02 0 –0.5 –1.0 –1.5 –2.0 –2.5 –3.0 –3.5 –4.0 –4.5 –5.0 VDCIN = 20V VPROG = 4.176V IPROG = 4V DUTY CYCLE (VOUT/VIN) 0 0.1 0.2 0.4 0.6 0.9 0.8 0.3 0.5 0.7 1.0 4101 G03 PROGRAMMED CURRENT = 10% DCIN = 9V DCIN = 12V DCIN = 24V 350 300 250 200 150 100 50 0 4101 G04 LOAD CURRENT = 1A, 2A, 3A DCIN = 12V VFLOAT = 4.2V VFLOAT 1V/(DIV) LOAD STATE DISCONNECT RECONNECT 1A STEP 3A STEP 3A STEP 1A STEP BATTERY VOLTAGE (V) 0 5 10 15 20 25 30 4101 G05 40 35 30 25 20 15 10 5 0 VDCIN = 0V IOUT (A) 0.5 0.0 1.5 1.0 2.0 2.5 3.5 3.0 4101 G06 VIN = 20V VIN = 8V 100 96 92 88 84 80 76 72 1μs/DIV 4101 G07 5V 0V RPULLUP = 15k LTC4101 VDD = 5V CBUS = 200pF IPROG (A) 0 0.6 0.4 0.5 0.3 0.2 0.1 0 0.05 4101 G08 0.10 0.40 0.15 0.20 0.25 0.30 0.35 VDD = 5V VBAT = 4V VDCIN = 20V VPROG = 4.208V PROGRAMMED CURRENT NO LOW CURRENT MODE LOW CURRENT MODE |
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