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LTC3577EUFF-4PBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC3577EUFF-4PBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 52 page  LTC3577-3/LTC3577-4 4 357734fa ELECTRICAL CHARACTERISTICS Power Manager. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, VBAT = 3.8V, ILIM0 = ILIM1 = 5V, WALL = 0V, VINLDO2 = VINLOD1 = VIN12 = VIN3 = VOUT, RPROG = 2k, RCLPROG = 2.1k, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Power Supply VBUS Input Supply Voltage 4.35 5.5 V IBUS_LIM Total Input Current (Note 5) ILIM0 = 5V, ILIM1 = 5V (1x Mode) ILIM0 = 0V, ILIM1 = 0V (5x Mode) ILIM0 = 0V, ILIM1 = 5V (10x Mode) l l l 80 450 900 90 475 950 100 500 1000 mA mA mA IBUSQ Input Quiescent Current, POFF State 1x, 5x, 10x Modes ILIM0 = 5V, ILIM1 = 0V (Suspend Mode) 0.42 0.05 0.1 mA mA hCLPROG Ratio of Measured VBUS Current to CLPROG Program Current 1000 mA/mA VCLPROG CLPROG Servo Voltage in Current Limit 1x Mode 5x Mode 10x Mode 0.2 1.0 2.0 V V V VUVLO VBUS Undervoltage Lockout Rising Threshold Falling Threshold 3.5 3.8 3.7 3.9 V V VDUVLO VBUS to VOUT Differential Undervoltage Lockout Rising Threshold Falling Threshold 50 –50 100 mV mV RON_ILIM Input Current Limit Power FET On- Resistance (Between VBUS and VOUT) 200 mΩ Battery Charger VFLOAT VBAT Regulated Output Voltage LTC3577-3 LTC3577-3, 0 ≤ TA ≤ 85°C 4.179 4.165 4.200 4.200 4.221 4.235 V V LTC3577-4 LTC3577-4, 0 ≤ TA ≤ 85°C 4.079 4.065 4.1 4.1 4.121 4.135 V V ICHG Constant-Current Mode Charge Current IC Not in Thermal Limit RPROG = 1k, Input Current Limit = 2A RPROG = 2k, Input Current Limit = 1A RPROG = 5k, Input Current Limit = 0.4A l l l 950 465 180 1000 500 200 1050 535 220 mA mA mA IBATQ_OFF Battery Drain Current, POFF State, Buck3 Disabled, No Load (Note 15) VBAT = 4.3V, Charger Time Out VBUS = 0V 6 55 27 100 μA μA IBATQ_ON Battery Drain Current, PON State, Buck3 Enabled (Notes 10, 15) VBUS = 0V, IOUT = 0μA, No Load On Supplies, Burst Mode Operation 130 200 μA VPROG,CHG PROG Pin Servo Voltage VBAT > VTRKL 1.000 V VPROG,TRKL PROG Pin Servo Voltage in Trickle Charge VBAT < VTRKL 0.100 V hPROG Ratio of IBAT to PROG Pin Current 1000 mA/mA ITRKL Trickle Charge Current VBAT < VTRKL 40 50 60 mA VTRKL Trickle Charge Rising Threshold Trickle Charge Falling Threshold VBAT Rising VBAT Falling 2.5 2.9 2.75 3.0 V V ΔVRECHRG Recharge Battery Threshold Voltage Threshold Voltage Relative to VFLOAT –75 –100 –125 mV tTERM Safety Timer Termination Period Timer Starts when VBAT = VFLOAT – 50mV 3.2 4 4.8 Hour tBADBAT Bad Battery Termination Time VBAT < VTRKL 0.4 0.5 0.6 Hour hC/10 End-of-Charge Indication Current Ratio (Note 6) 0.085 0.1 0.11 mA/mA RON_CHG Battery Charger Power FET On- Resistance (Between VOUT and BAT) 200 mΩ TLIM Junction Temperature in Constant Temperature Mode 110 °C |
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