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LTC4057 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4057 Datasheet(HTML) 3 Page - Linear Technology |
3 / 24 page LTC4085 3 4085fd SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCLPROG CLPROG Pin Voltage RPROG = 2k RPROG = 1k l l 0.98 0.98 1 1 1.02 1.02 V V ISS Soft-Start Inrush Current IN or OUT 5 mA/μs VCLEN Input Current Limit Enable Threshold Voltage (VIN – VOUT) VIN Rising (VIN – VOUT) VIN Falling 20 –80 50 –60 80 –20 mV mV Battery Charger VFLOAT Regulated Output Voltage IBAT = 2mA IBAT = 2mA, (0°C to 85°C) 4.165 4.158 4.2 4.2 4.235 4.242 V V IBAT Current Mode Charge Current RPROG = 100k (0.1%), No Load RPROG = 50k (0.1%), No Load l l 465 900 500 1000 535 1080 mA mA IBAT(MAX) Maximum Charge Current (Note 8) 1.5 A VPROG PROG Pin Voltage RPROG = 100k RPROG = 50k l l 0.98 0.98 1 1 1.02 1.02 V V kEOC Ratio of End-of-Charge Current to Charge Current VBAT = VFLOAT (4.2V) l 0.085 0.1 0.11 mA/mA ITRIKL Trickle Charge Current VBAT = 2V, RPROG = 100k (0.1%) 40 50 60 mA VTRIKL Trickle Charge Threshold Voltage l 2.8 2.9 3 V VCEN Charger Enable Threshold Voltage (VOUT – VBAT) Falling; VBAT = 4V (VOUT – VBAT) Rising; VBAT = 4V 55 80 mV mV VRECHRG Recharge Battery Threshold Voltage VFLOAT – VRECHRG l 65 100 135 mV tTIMER TIMER Accuracy VBAT = 4.3V -10 10 % Recharge Time Percent of Total Charge Time 50 % Low-Battery Trickle Charge Time Percent of Total Charge Time, VBAT < 2.8V 25 % TLIM Junction Temperature in Constant Temperature Mode 105 °C Internal Ideal Diode RFWD Incremental Resistance, VON Regulation IBAT = 100mA 125 m Ω RDIO(ON) ON Resistance VBAT to VOUT IBAT = 600mA 215 m Ω VFWD Voltage Forward Drop (VBAT – VOUT)IBAT = 5mA IBAT = 100mA IBAT = 600mA l 10 30 55 160 50 mV mV mV VOFF Diode Disable Battery Voltage 2.8 V IFWD Load Current Limit, for VON Regulation 550 mA ID(MAX) Diode Current Limit 2.2 A External Ideal Diode VFWD,EDA External Ideal Diode Forward Voltage VGATE = 1.85V; IGATE = 0 20 mV Logic VOL Output Low Voltage, CHRG, ACPR ISINK = 5mA l 0.1 0.25 V VIH Input High Voltage SUSP, HPWR Pin l 1.2 V VIL Input Low Voltage SUSP, HPWR Pin l 0.4 V IPULLDN Logic Input Pull-Down Current SUSP, HPWR 2 μA The l indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VBAT = 3.7V, HPWR = 5V, WALL = 0V, RPROG = 100k, RCLPROG = 2k, unless otherwise noted. ELECTRICAL CHARACTERISTICS |
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