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LTC3577EUFF-3PBF Datasheet(PDF) 10 Page - Linear Technology |
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LTC3577EUFF-3PBF Datasheet(HTML) 10 Page - Linear Technology |
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10 / 52 page  LTC3577-3/LTC3577-4 10 357734fa TYPICAL PERFORMANCE CHARACTERISTICS Input Supply Current vs Temperature Input Supply Current vs Temperature (Suspend Mode) Battery Drain Current vs Temperature Input Current Limit vs Temperature Input RON vs Temperature Charge Current vs Temperature (Thermal Regulation) ELECTRICAL CHARACTERISTICS Note 5: Total input current is the sum of quiescent current, IBUSQ, and measured current given by VCLPROG/RCLPROG • (hCLPROG + 1). Note 6: hC/10 is expressed as a fraction of measured full charge current with indicated PROG resistor. Note 7: The current limit features of this part are intended to protect the IC from short term or intermittent fault conditions. Continuous operation above the maximum specified pin current rating may result in device degradation or failure. Note 8: The serial port is tested at rated operating frequency. Timing parameters are tested and/or guaranteed by design. Note 9: VOUT not in UVLO. Note 10: Buck FB high, not switching. Note 11: Measured with the LDO running unity gain with output tied to feedback pin. Note 12: Dropout voltage is the minimum input to output voltage differential needed for an LDO to maintain regulation at a specified output current. When an LDO is in dropout, its output voltage will be equal to VIN – VDROP. Note 13: PGOOD threshold is expressed as a percentage difference from the Buck1, Buck2 and LDO1 regulation voltages. The threshold is measured from Buck1, Buck2 and LDO1 output rising. Note 14: IVOUT_LED is the sum of VOUT and VIN3 current due to LED driver. Note 15: The IBATQ specifications represent the total battery load assuming VINLDO1, VINLDO2, VIN12 and VIN3 are tied directly to VOUT. TEMPERATURE (°C) –50 0.7 25 357734 G01 0.4 0.2 –25 0 50 0.1 0 0.8 0.6 0.5 0.3 75 100 125 VBUS = 5V 1x MODE TA = 25°C unless otherwise specified TEMPERATURE (°C) –50 –25 0 0.04 0.10 0 50 75 357734 G02 0.02 0.08 0.06 25 100 125 VBUS = 5V TEMPERATURE (°C) –50 400 1000 1100 1200 0 50 75 357734 G04 200 100 800 600 300 900 0 700 500 –25 25 100 125 VBUS = 5V RCLPROG = 2.1k 10x MODE 5x MODE 1x MODE TEMPERATURE (°C) –50 0 100 140 160 180 300 240 0 50 75 357734 G05 120 260 280 220 –25 25 100 125 IOUT = 400mA VBUS = 4.5V VBUS = 5.5V VBUS = 5V TEMPERATURE (°C) –50 400 500 600 25 75 357734 G06 300 200 –25 0 50 100 125 100 0 VBUS = 5V 10x MODE RPROG = 2k TEMPERATURE (°C) –50 0 50 150 200 250 450 350 0 50 75 357734 G03 100 400 300 –25 25 100 125 NO LOAD ON ALL SUPPLIES VBAT = 3.8V VBUS = 0V ALL SUPPLIES ENABLED (EXCEPT BOOST) PULSE-SKIP MODE ALL SUPPLIES ENABLED (EXCEPT BOOST) Burst Mode OPERATION ALL SUPPLIES DISABLED EXCEPT LDO1 |
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