MAX745C/D データシートの表示（PDF） - Maxim Integrated
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MAX745C/D Datasheet PDF : 8 Pages
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Switch-Mode Lithium-Ion
Battery Charger
ABSOLUTE MAXIMUM RATINGS
DCIN to GND ............................................................-0.3V to 26V
BST, DHI to GND ......................................................-0.3V to 30V
BST to LX ....................................................................-0.3V to 6V
DHI to LX............................................(LX - 0.3V) to (BST + 0.3V)
LX to GND ................................................-0.3V to (DCIN + 0.3V)
VL to GND...................................................................-0.3V to 6V
CELL0, CELL1, IBAT, STATUS, CCI, CCV,
REF, SETI, VADJ, DLO, THM/SHDN to GND ..-0.3V to (VL + 0.3V)
BATT, CS to GND .....................................................-0.3V to 20V
PGND to GND..........................................................-0.3V to 0.3V
VL Current ...........................................................................50mA
Continuous Power Dissipation (TA = +70°C)
SSOP (derate 8.00mW/°C above +70°C) ......................640mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature.........................................-60°C to +150°C
Lead Temperature (soldering, 10sec) .............................+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
(VDCIN = 18V, VBATT = 8.4V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER
SUPPLY AND REFERENCE
DCIN Input Voltage Range
DCIN Quiescent Supply Current
VL Output Voltage
REF Output Voltage
REF Output Load Regulation
SWITCHING REGULATOR
Oscillator Frequency
DHI Maximum Duty Cycle
DHI On-Resistance
DLO On-Resistance
BATT Input Current
CS Input Current
BATT, CS Input Voltage Range
CS to BATT Offset Voltage (Note 1)
CS to BATT
Current-Sense Voltage
Absolute Voltage Accuracy
CONDITIONS
6.0V < VDCIN < 24V, logic inputs = VL
6.0V < VDCIN < 24V, no load
TA = +25°C
6.0V < VDCIN < 24V
0 < IREF < 1mA
Output high or low
Output high or low
VL < 3.2V, VBATT = 12V
VL > 5.15V, VBATT = 12V
VL < 3.2V, VCS = 12V
VL > 5.15V, VCS = 12V
4V < VBATT < 16V
SETI = VREF (full scale)
SETI = 400mV
Not including VADJ resistor tolerance
With 1% tolerance VADJ resistors
MIN TYP
6
4
5.15 5.40
4.17 4.2
4.16 4.2
10
270 300
89
93
4
6
0
170
14
-0.65
-0.75
±1.5
185
18
MAX UNITS
24
V
6
mA
5.65
V
4.23
V
4.24
20 mV/mA
330
kHz
%
7
Ω
14
Ω
5
µA
500
5
µA
400
19
V
mV
205
mV
22
0.65
%
0.75
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