MAX8725 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX8725 Datasheet PDF : 30 Pages
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Multichemistry Battery Chargers with Automatic
System Power Selector
ABSOLUTE MAXIMUM RATINGS
DCIN, CSSP, CSSN, SRC, ACOK to GND..............-0.3V to +30V
DHIV ........................................................…SRC + 0.3, SRC - 6V
DHI, PDL, PDS to GND ...............................-0.3V to (VSRC + 0.3)
BATT, CSIP, CSIN to GND .....................................-0.3V to +20V
CSIP to CSIN or CSSP to CSSN or PGND to GND ...-0.3V to +0.3V
CCI, CCS, CCV, DLO, IINP, REF,
ACIN to GND ........................................-0.3V to (VLDO + 0.3V)
DLOV, VCTL, ICTL, MODE, CLS, LDO,
PKPRES to GND ...................................................-0.3V to +6V
DLOV to LDO.........................................................-0.3V to +0.3V
DLO to PGND ..........................................-0.3V to (DLOV + 0.3V)
LDO Short-Circuit Current...................................................50mA
Continuous Power Dissipation (TA = +70°C)
28-Pin TQFN (derate 20.8mW/°C above +70°C) .......1666mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VVCTL = VICTL = 1.8V, MODE = float, ACIN = 0, CLS =
REF, GND = PGND = 0, PKPRES = GND, LDO = DLOV, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CHARGE VOLTAGE REGULATION
VCTL Range
CONDITIONS
MIN TYP MAX UNITS
0
3.6
V
VVCTL = 3.6V (3 or 4 cells);
-0.8
not including VCTL resistor tolerances
+0.8
Battery Regulation Voltage
Accuracy
VVCTL = 3.6V/20 (3 or 4 cells); not including -0.8
VCTL resistor tolerances
VVCTL = 3.6V (3 or 4 cells); including VCTL
resistor tolerances of 1%
-1.0
+0.8
%
+1.0
VVCTL Default Threshold
VCTL Input Bias Current
CHARGE-CURRENT REGULATION
ICTL Range
CSIP-to-CSIN Full-Scale Current-
Sense Voltage
VVCTL = VLDO (3 or 4 cells, default
threshold of 4.2V/cell)
-0.5
VVCTL rising
4.1
VVCTL = 3V
0
VDCIN = 0, VVCTL = 5V
0
+0.5
4.3
V
2.5
µA
12
MAX1909
MAX8725
0
3.6
V
0
3.2
69.37 75.00 80.63 mV
MAX1909: VICTL = 3.6V (not including ICTL
-7.5
resistor tolerances)
MAX8725: VICTL = 3.2V (not including ICTL
-5
resistor tolerances)
+7.5
+5
Charge-Current Accuracy
MAX1909: VICTL = 3.6V x 0.5, MAX8725:
VICTL = 3.2V x 0.5 (not including ICTL
-5
resistor tolerances)
+5
%
MAX1909: VICTL = 0.9V (not including ICTL
resistor tolerances)
-7.5
+7.5
MAX8725: VICTL = 0.18V (not including
ICTL resistor tolerances)
-30
+30
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