MAX8731 Maxim Integrated Products, MAX8731 Datasheet - Page 4

• Manufacturer Part Number: MAX8731
• Description: SMBus Level 2 Battery Charger
• Manufacturer: Maxim Integrated Products

SMBus Level 2 Battery Charger with
Remote Sense
ELECTRICAL CHARACTERISTICS (continued)
(V
C
Figure 1; T
4
LDO Output Voltage
LDO Load Regulation
LDO Undervoltage-Lockout Threshold
V
V
V
V
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 (I
DHI On-Resistance Low
DHI On-Resistance High
DLO On-Resistance High
DLO On-Resistance Low
LDO
DCIN
DD
DD
DD
DD
_______________________________________________________________________________________
Range
UVLO Rising
UVLO Hysteresis
Quiescent Current
= 1µF, V
= V
MIN
A
LX
= 0°C to +85°C, unless otherwise noted. Typical values are at T
PARAMETER
)
= V
CC
CSSP
= LDO, C
= V
CSSN
REF
= 19V, V
= 1µF, C
BST
8.0V < V
0 < I
V
DCIN < 6V, V
0 < I
REF falling
V
V
V
∆V
Charger switching, FBS_ selected
Charger not switching or FBS_ not selected
V
V
DHI high
V
I
I
I
I
DAC
DHI
DHI
DLO
DLO
DCIN
ACOK
ACOK
CSIN
CSIN
CSIN
DCIN
CSIN
- V
LDO
REF
= -10mA
= 10mA
= 10mA
= -10mA
= 0.1µF, V
- V
= 16.0V, V
= 16.0V, V
LX
= 8.0V, V
= 28V, V
= 0.4V, ACIN = 1.5V
= 5.5V, ACIN = 2.5V
/ ∆(V
DCIN
< 500µA
< 30mA
FBS
= 4.5V, V
CSIN
DD
< 28V, no load
CSIN
LDO
DD
= 5.5V, SCL = SDA = 5.5V
CSSP
CSSP
- V
CONDITIONS
FBSA
= 3.3V, ACIN = 2.5V; pins CCI, CCV, and CCS are compensated per
FBS_
falling
= V
= 19V
= 17V
LX
)
= V
= 20V , DHI low
FBSB
= V
A
= +25°C.)
CSIP
= V
CSIN
= 16.8V, BATSEL = GND = PGND = 0,
4.071
2.007
MIN
5.25
3.20
0.95
225
360
260
2.7
10
-1
-2
1
0
4.096
2.048
TYP
1.00
100
250
400
300
500
5.4
2.5
3.1
0.5
34
16
20
4
1
3
3
1
4.120
2.089
MAX
5.55
5.15
1.05
440
360
800
100
200
275
5.5
2.7
3.9
+1
+2
27
30
14
1
2
3
5
5
3
UNITS
mV
mV
mA
mV
mV
V/V
mV
µA
µA
µA
µA
µA
µA
µA
ns
Ω
Ω
Ω
Ω
A
V
V
V
V
V
V
V