M
Chemistry-Independent
Battery Chargers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DCIN to AGND..........................................................-0.3V to 30V
DCIN to IOUT...........................................................-0.3V to 7.5V
BST to AGND............................................................-0.3V to 36V
BST, DHI to LX............................................................-0.3V to 6V
LX to AGND ..............................................................-0.3V to 30V
THM, CCI, CCV, DACV, REF,
DLO to AGND................................................-0.3V to (VL + 0.3V)
VL, SEL,
INT
, SDA, SCL to AGND (MAX1647) ...........-0.3V to 6V
SETV, SETI to AGND (MAX1648)................................-0.3V to 6V
BATT, CS+ to AGND.................................................-0.3V to 20V
ELECTRICAL CHARACTERISTICS
(V
DCIN
= 18V, V
REF
= 4.096V,
T
A
= 0°C to +85°C
. Typical values are at T
A
= +25°C, unless otherwise noted.)
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.
PGND to AGND.....................................................-0.3V to +0.3V
SDA,
INT
Current................................................................50mA
VL Current...........................................................................50mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SO (derate 8.7mW/°C above +70°C).................696mW
20-Pin SSOP (derate 8mW/°C above +70°C) ...............640mW
Operating Temperature Range
MAX1647EAP, MAX1648ESE ...........................-40°C to +85°C
Storage Temperature.........................................-60°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
%
-0.65
0.65
MAX1647, ChargingVoltage( ) = 0x1060,
ChargingVoltage( ) = 0x3130; MAX1648,
V
SETV
= 3.15V, V
SETV
= 1.05V
Voltage Accuracy
mV
2.94
MAX1647, SEL = open,
ChargingCurrent( ) = 0x0020
CS to BATT Single-Count
Current-Sense Voltage
V
0
19
BATT, CS Input Voltage Range
μA
350
1
500
5
VL < 5.15V, V
BATT
= 12V
VL < 3.2V, V
CS
= 12V
BATT Input Current (Note 1)
1
5
VL < 3.2V, V
BATT
= 12V
6
14
High or low
DLO On-Resistance
4
7
High or low
DHI On-Resistance
mA
V
mV
V
V
4
6
7.5V < V
DCIN
< 28V, logic inputs = VL
7.5V < V
DCIN
< 28V, no load
I
LOAD
= 10mA
MAX1647
0μA < I
SOURCE
< 500μA
DCIN Quiescent Current
VL Output Voltage
VL Load Regulation
VL AC_PRESENT Trip Point
REF Output Voltage
V
7.5
28
DCIN Input Voltage Range
%
89
93
DHI Maximum Duty Cycle
kHz
200
250
300
Oscillator Frequency
μA
700
REF Overdrive Input Current
SWITCHING REGULATOR
5.15
5.4
5.65
100
5.15
4.07
3.20
3.74
4
3.9
UNITS
MIN
TYP
MAX
CONDITIONS
PARAMETER
μA
170
400
VL < 5.15V, V
CS
= 12V
CS Input Current (Note 1)
mV
170
185
200
MAX1647, SEL = open,
ChargingCurrent( ) = 0x07F0;
MAX1648, V
SETI
= 1.024V
CS to BATT Full-Scale
Current-Sense Voltage
SUPPLY AND REFERENCE