MAX8731 Просмотр технического описания (PDF) - Maxim Integrated
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MAX8731 Datasheet PDF : 32 Pages
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SMBus Level 2 Battery Charger with
Remote Sense
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
Battery Quiescent Current
Adapter present, not charging, ICSIP + ICSIN + ILX + IFBS,
VFBS_ = VLX = VCSIN = VCSIP = 19V
Adapter absent, ICSIP + ICSIN + ILX + IFBSA + IFBSB + ICSSP
+ ICSSN, VFBS_ = VLX = VCSIN = VCSIP = 19V, VDCIN = 0V
Adapter Quiescent Current
IDCIN +
ICSSP +
ICSSN
INPUT-CURRENT REGULATION
VAdapter = 26V, VBattery = 16.8V, not
charging
VAdapter = 19V,
VBattery = 16.8V
Charging
Not charging
VAdapter = 8V,
VBattery = 4V
Charging
Not charging
CSSP to CSSN Full-Scale
Current-Sense Voltage
VFBS_ = 19V
MIN
106.7
TYP
2
200
0.4
200
0.4
200
110
MAX UNITS
5
µA
+1
500
µA
1
mA
500
µA
1
mA
500
µA
113.3 mV
Input Current Accuracy
RS1 (Figure 1) = 10mΩ, InputCurrent() = 11004mA or
3584mA
RS1 (Figure 1) = 10mΩ, InputCurrent() = 2048mA
POR Input Current
RS1 (Figure 1) = 10mΩ
Input Current-Limit Gain Error
Input Current-Limit Offset
Based on InputCurrent() = 1024mA and 11004mA
CSSP/CSSN Input Voltage Range
IINP Transconductance
VCSSP - CSSN = 110mV
IINP Offset
Based on VCSSP - CSSN = 110mV and 20mV
VCSSP - CSSN = 110mV
IINP Accuracy
VCSSP - CSSN = 55mV or 35mV
VCSSP - CSSN = 20mV
IINP Output Voltage Range
SUPPLY AND LINEAR REGULATOR
DCIN, Input Voltage Range
DCIN Undervoltage-Lockout
Trip Point
DCIN falling
DCIN rising
Power-Fail Threshold
VCSSP - VCSIN falling
VCSSP - VCSIN rising
-3
+3
%
-5
+5
%
256
mA
-2
+2
%
-1
+1
mV
8
26
V
2.85 3.0 3.15 mA/V
-1.5
+1.5
mV
-5
+5
-4
+4
%
-10
+10
0
3.5
V
8.0
26.0
V
7
7.4
V
7.5 7.85
9
15
21
mV
160 210 271
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