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8731AE Datasheet(PDF) 3 Page - Maxim Integrated Products |
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8731AE Datasheet(HTML) 3 Page - Maxim Integrated Products |
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3 / 32 page  SMBus Level 2 Battery Charger with Remote Sense _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (VDCIN = VLX = VCSSP = VCSSN = 19V, VBST - VLX = 4.5V, VFBSA = VFBSB = VCSIP = VCSIN = 16.8V, BATSEL = GND = PGND = 0, CLDO = 1µF, VCC = LDO, CREF = 1µF, CDAC = 0.1µF, VDD = 3.3V, ACIN = 2.5V; pins CCI, CCV, and CCS are compensated per Figure 1; TA = 0 °C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER CONDITIONS MIN TYP MAX UNITS Adapter present, not charging, ICSIP + ICSIN + ILX + IFBS, VFBS_ = VLX = VCSIN = VCSIP = 19V 2 5 Battery Quiescent Current Adapter absent, ICSIP + ICSIN + ILX + IFBSA + IFBSB + ICSSP + ICSSN, VFBS_ = VLX = VCSIN = VCSIP = 19V, VDCIN = 0V +1 µA VAdapter = 26V, VBattery = 16.8V, not charging 200 500 µA Charging 0.4 1 mA VAdapter = 19V, VBattery = 16.8V Not charging 200 500 µA Charging 0.4 1 mA Adapter Quiescent Current IDCIN + ICSSP + ICSSN VAdapter = 8V, VBattery = 4V Not charging 200 500 µA INPUT-CURRENT REGULATION CSSP-to-CSSN Full-Scale Current-Sense Voltage VFBS_ = 19V 106.7 110 113.3 mV RS1, Figure 1 = 10m Ω, InputCurrent() = 11004mA or 3584mA -3 +3 Input Current Accuracy RS1, Figure 1 = 10m Ω, InputCurrent() = 2048mA -5 +5 % POR Input Current RS1, Figure 1 = 10m Ω 256 mA Input Current-Limit Gain Error -2 +2 % Input Current-Limit Offset Based on InputCurrent() = 1024mA and 11004mA -1 +1 mV CSSP/CSSN Input Voltage Range 8 26 V IINP Transconductance VCSSP - CSSN = 110mV 2.85 3.0 3.15 mA/V IINP Offset Based on VCSSP - CSSN = 110mV and 20mV -1.5 +1.5 mV VCSSP - CSSN = 110mV -5 +5 VCSSP - CSSN = 55mV or 35mV -4 +4 IINP Accuracy VCSSP - CSSN = 20mV -10 +10 % IINP Output Voltage Range 0 3.5 V SUPPLY AND LINEAR REGULATOR DCIN, Input Voltage Range 8.0 26.0 V DCIN falling 7 7.4 DCIN Undervoltage-Lockout Trip Point DCIN rising 7.5 7.85 V VCSSP - VCSIN falling 9 15 21 Power-Fail Threshold VCSSP - VCSIN rising 160 210 271 mV |
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