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
LDO Output Voltage
LDO Load Regulation
LDO Undervoltage-Lockout Threshold
VDD Range
VDD UVLO Rising
VDD UVLO Hysteresis
VDD Quiescent Current
REFERENCE
REF Output Voltage
REF Undervoltage-Lockout Trip Point
ACOK
ACOK Sink Current
ACOK Leakage Current
ACIN
ACIN Threshold
ACIN Threshold Hysteresis
ACIN Input Bias Current
REMOTE-SENSE INPUTS
FBS_ Range
FBS_ Gain
CSIN-FBS_ Clamp Voltage
FBS_ Bias Current
FBS_ Bias Current
SWITCHING REGULATOR
Off-Time
BST Supply Current
LX Input Bias Current
Maximum Discontinuous-Mode Peak
Current (IMIN)
DHI On-Resistance Low
DHI On-Resistance High
DLO On-Resistance High
DLO On-Resistance Low
CONDITIONS
8.0V < VDCIN < 28V, no load
0 < ILDO < 30mA
VDCIN = 8.0V, VLDO falling
DCIN < 6V, VDD = 5.5V, SCL = SDA = 5.5V
0 < IREF < 500µA
REF falling
VACOK = 0.4V, ACIN = 1.5V
VACOK = 5.5V, ACIN = 2.5V
VCSIN - VFBS
∆VCSIN / ∆(VCSIN - VFBS_)
Charger switching, FBS_ selected
Charger not switching or FBS_ not selected
VCSIN = 16.0V, VCSSP = 19V
VCSIN = 16.0V, VCSSP = 17V
DHI high
VDCIN = 28V, VCSIN = VLX = 20V, DHI low
IDHI = -10mA
IDHI = 10mA
IDLO = 10mA
IDLO = -10mA
MIN TYP MAX UNITS
5.25
5.4
5.55
V
34
100
mV
3.20
4
5.15
V
2.7
5.5
V
2.5
2.7
V
100
mV
16
27
µA
4.071 4.096 4.120
V
3.1
3.9
V
1
mA
1
µA
2.007 2.048 2.089
V
10
20
30
mV
-1
+1
µA
0
200
mV
0.95 1.00 1.05
V/V
225
250
275
mV
14
µA
-2
+2
µA
360 400 440
ns
260 300 360
500 800
µA
2
µA
0.5
A
1
3
Ω
3
5
Ω
3
5
Ω
1
3
Ω
4 _______________________________________________________________________________________
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