MAX1645-MAX1645A Maxim, MAX1645-MAX1645A Datasheet - Page 2

• Manufacturer Part Number: MAX1645-MAX1645A
• Description: Advanced Chemistry-Independent / Level 2 Battery Chargers with Input Current Limiting
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
T
Advanced Chemistry-Independent, Level 2
Battery Chargers with Input Current Limiting
DCIN, CVS, CSSP, CSSN, LX to GND....................-0.3V to +30V
CSSP to CSSN, CSIP to CSIN ...............................-0.3V to +0.3V
PDS, PDL to GND ...................................-0.3V to (V
BST to LX..................................................................-0.3V to +6V
DHI to LX ...................................................-0.3V to (V
CSIP, CSIN, BATT to GND .....................................-0.3V to +22V
LDO to GND .....................-0.3V to (lower of 6V or V
DLO to GND ...........................................-0.3V to (V
REF, DAC, CCV, CCI, CCS, CLS to GND.....-0.3V to (V
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.
2
GENERAL SPECIFICATIONS
DCIN Typical Operating Range
DCIN Supply Current
A
DCIN Supply Current Charging
Inhibited
DCIN Undervoltage Threshold
LDO Output Voltage
V
(Note 1)
V
V
REF Output Voltage
BATT Undervoltage Threshold
(Note 2)
PDS Charging Source Switch
Turn-Off Threshold
PDS Charging Source Switch
Threshold Hysteresis
PDS Output Low Voltage, PDS
Below CSSP
PDS Turn-On Current
PDS Turn-Off Current
PDL Load Switch Turn-Off
Threshold
DD
DD
DD
= +25°C.)
_______________________________________________________________________________________
Input Voltage Range
Undervoltage Threshold
Quiescent Current
PARAMETER
DD
= +3.3V, V
SYMBOL
V
V
V
BATT
PDS-OFF
PDS-HYS
PDL-OFF
V
I
V
V
DCIN
DCIN
I
LDO
DD
REF
= +16.8V, V
8V < V
8V < V
When AC_PRESENT
switches
8V < V
8V < V
When the SMB res-
ponds to commands
0 < V
V
0 < I
When I
V
V
I
PDS = CSSP
V
V
PDS
SDA
CVS
CVS
PDS
CVS
DLOV
CSSP
DCIN
BST
LDO
REF
= 0
DCIN
DCIN
referred to V
referred to V
= V
referred to V
= 5V
DCIN
DCIN
DCIN
DCIN
CHARGE
< 200µA
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
CSSP
< 6V, V
= +18V, T
< 28V
< 28V
< 28V, 0 < I
< 28V
- 2V, V
drops to 128mA
CONDITIONS
DD
BATT
BATT
BATT
A
= 5V, V
DCIN
V
THM to GND ...............................................-0.3V to (V
PGND to GND .......................................................-0.3V to +0.3V
LDO Continuous Current.....................................................50mA
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature.........................................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
, V
, V
DD
= 0°C to +85°C, unless otherwise noted. Typical values are at
LDO
DCIN rising
DCIN falling
V
V
28-Pin QSOP (derate 10.8mW/°C above +70°C).........860mW
CVS
CVS
DD
DD
, SCL, SDA, INT, DLOV to GND.........................-0.3V to +6V
= 16V
< 15mA
SCL
rising
falling
falling
rising
= 5V,
4.066
5.15
-150
MIN
100
100
2.8
2.1
2.4
50
10
8
7
8
A
= +70°C)
4.096
TYP
2.55
-100
100
200
150
1.7
0.7
7.5
7.4
5.4
2.5
80
10
50
4.126
MAX
7.85
5.65
5.65
150
150
300
300
-50
2.8
2.8
28
12
6
2
DD
UNITS
+ 0.3V)
mA
mA
mA
mV
mV
mV
µA
µA
V
V
V
V
V
V
V
V