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MAX8724 Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX8724 Datasheet(HTML) 9 Page - Maxim Integrated Products |
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9 / 30 page  Low-Cost Multichemistry Battery Chargers _______________________________________________________________________________________ 9 ELECTRICAL CHARACTERISTICS (continued) (VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3V, VVCTL = VICTL = 0.75 x VREFIN, CELLS = open, CLS = REF, VBST - VLX = 4.5V, ACIN = GND = PGND = 0, CLDO = 1µF, LDO = DLOV, CREF = 1µF; CCI, CCS, and CCV are compensated per Figure 1a; TA = -40°C to +85°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY AND LDO REGULATOR DCIN Input Voltage Range VDCIN 8 28 V DCIN Quiescent Current IDCIN 8.0V < VDCIN < 28V 6 mA VBATT = 19V, VDCIN = 0V 1 BATT Input Current IBATT VBATT = 2V to 19V, VDCIN = 19.3V 500 µA LDO Output Voltage 8V < VDCIN < 28V, no load 5.25 5.55 V LDO Load Regulation 0 < ILDO < 10mA 100 mV REFERENCE REF Output Voltage 0 < IREF < 500µA 4.065 4.120 V TRIP POINTS VDCIN falling, referred to VCSIN (MAX1908/MAX8724 only) 50 150 BATT Power-Fail Threshold VCSSP falling, referred to VCSIN (MAX8765/MAX8765A only) 50 150 mV ACIN rising (MAX8765/MAX8765A only) 2.028 2.068 ACIN Threshold ACIN rising (MAX1908/MAX8724 only) 2.007 2.089 V SWITCHING REGULATOR DHI Off-Time VBATT = 16V, VDCIN = 19V, VCELLS = VREFIN 0.35 0.45 µs DHI Minimum Off-Time VBATT = 16V, VDCIN = 17V, VCELLS = VREFIN 0.24 0.33 µs DHI Maximum On-Time 2.5 7.5 ms DHI Maximum Duty Cycle 99 % Battery Undervoltage Charge Current VBATT = 3V per cell (RS2 = 15m Ω), MAX1908 only, VBATT rising 150 450 mA CELLS = GND, MAX1908 only, VBATT rising 6.09 6.30 CELLS = open, MAX1908 only, VBATT rising 9.12 9.45 Battery Undervoltage Current Threshold CELLS = VREFIN, MAX1908 only, VBATT rising 12.18 12.60 V DHI On-Resistance High VBST - VLX = 4.5V, IDHI = +100mA 7 Ω DHI On-Resistance Low VBST - VLX = 4.5V, IDHI = -100mA 3.5 Ω DLO On-Resistance High VDLOV = 4.5V, IDLO = +100mA 7 Ω DLO On-Resistance Low VDLOV = 4.5V, IDLO = -100mA 3.5 Ω |
Similar Part No. - MAX8724 |
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Similar Description - MAX8724 |
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