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MAX1757 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1757 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 17 page Stand-Alone, Switch-Mode Li+ Battery Charger with Internal 14V Switch _______________________________________________________________________________________ 7 4.194 4.196 4.195 4.197 4.200 4.201 4.199 4.198 4.202 0 200 300 400 500 100 600 700 800 900 1000 REFERENCE LOAD REGULATION REFERENCE LOAD ( µA) 1000 0.1 0.1 1 10 TIMEOUT vs. TIMER1 CAPACITANCE 1 CAPACITANCE (nF) 10 100 PREQUALIFICATION MODE TOP-OFF MODE VOLTAGE MODE 1000 1 0.1 1 10 FAST-CHARGE TIMEOUT vs. TIMER2 CAPACITANCE 10 CAPACITANCE (nF) 100 50 60 70 80 90 100 6 8 10 12 14 EFFICIENCY vs. INPUT VOLTAGE INPUT VOLTAGE (V) ICHG = 1.0A 2 CELLS 1 CELL 3.95 4.05 4.00 4.15 4.10 4.25 4.20 4.30 4.40 4.35 4.45 0 1.0 1.5 2.0 0.5 2.5 3.0 3.5 4.0 4.5 VOLTAGE LIMIT vs. VADJ VOLTAGE VADJ VOLTAGE (V) 4.185 4.195 4.190 4.205 4.200 4.210 4.215 -40 20 40 -20 0 60 80 100 REFERENCE VOLTAGE vs. TEMPERATURE TEMPERATURE ( °C) Typical Operating Characteristics (Circuit of Figure 1, VDCIN = 12V, V SHDN = VVL, VCELL = GND, VVADJ = VREF/2, VISETIN = VISETOUT = VREF, see Figure 1, TA = +25°C, unless otherwise noted.) 0 1.0 0.5 2.5 2.0 1.5 4.0 3.5 3.0 4.5 0 0.6 0.8 0.2 0.4 1.0 1.2 1.4 1.6 BATTERY VOLTAGE vs. CHARGING CURRENT CHARGING CURRENT (A) 0 0.4 0.2 1.0 0.8 0.6 1.4 1.2 1.6 0 1.5 2.0 0.5 1.0 2.5 3.0 3.5 4.0 4.5 CHARGING CURRENT vs. ISETOUT VOLTAGE ISETOUT VOLTAGE (V) 0 20 40 60 80 100 120 01.0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 INPUT CURRENT-SENSE REGULATION VOLTAGE vs. ISETIN VOLTAGE ISETIN VOLTAGE (V) |
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