MAX1898 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1898 Datasheet PDF : 12 Pages
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Linear Charger for Single-Cell Li+ Battery
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 8V, VBATT = 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND, TA = -40°C to +85°C, unless otherwise noted.)
PARAMETER
BATT Input Current
IN, CS Input Current
VOLTAGE LOOP
Voltage-Loop Set Point
VBATT Prequal Voltage Threshold
DRV Sink Current
Maximum Voltage (VIN - VDRV)
CONDITIONS
Done, RSTRT = GND, VBATT = 4.1V for
MAX1898EUB42 and 4.0V for MAX1898EUB41
Done, RSTRT = open, VBATT = 4.1V for
MAX1898EUB42 and 4.0V for MAX1898EUB41
EN/OK = GND
VIN = 4V
VIN = VBATT = 4V (IIN + ICS)
VIN = 12V, (IIN + ICS), done, RSTRT = open
MAX1898EUB42
MAX1898EUB41
Timers running
MAX1898EUB42
MAX1898EUB41
VDRV = VIN - 1V, VBATT = 3.5V
VBATT = 3.5V
MIN
4.137
4.038
2.394
2.337
3.5
3
MAX
100
10
10
10
10
5
4.263
4.162
2.646
2.583
7
VBATT Restart Threshold (As a
Percentage of Voltage-Loop Set
Point)
RSTRT = GND
92
98
CURRENT LOOP
Internal Current-Sense Resistance
RMS Charge Current
Current-Sense Amplifier Gain, ISET
to IIN Fast Charge
Current-Sense Amplifier Gain, ISET
to IIN Prequal
Current-Loop Regulation Set Point
CHG Trip Threshold (As a
Percentage of Full Load Current)
Timer Accuracy
CHG Output Low Current
CHG Output High Leakage
CHG Blink Rate
IN to CS pin-to-pin resistance
ICS = 500mA, VSET = 1.4V
ICS = 50mA, VISET = 0.14V,
VBATT = 2V
RSET = 2.8kΩ, VBATT = 3.5V, closed-loop
performance
ILOAD falling, RSET = 2.8kΩ
ILOAD rising, RSET = 2.8kΩ
CCT = 100nF for 2 hours, 54 minutes nominal
V CHG = 1V
V CHG = 12V
Fault state (50% duty cycle), CT = 100nF
50
200
1.4
0.93
1.07
0.6
1.50
440
560
15
25
17
27
-13
+13
3.5
7
1
1
2
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
UNITS
µA
µA
mA
V
V
mA
V
%
mΩ
A
mA/A
mA/A
mA
%
%
mA
µA
Hz
4 _______________________________________________________________________________________
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