MAX1645-MAX1645A Maxim, MAX1645-MAX1645A Datasheet - Page 8

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

Advanced Chemistry-Independent, Level 2
Battery Chargers with Input Current Limiting
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
Note 1: Guaranteed by meeting the SMB timing specs.
Note 2: The charger reverts to a trickle-charge mode of I
Note 3: Does not include current-sense resistor tolerance.
Note 4: Voltage difference between CCV, and CCI or CCS when one of these three pins is held low and the others try to pull high.
8
(Circuit of Figure 1, V
SDA Output Data Valid
from SCL
Maximum Charge Period
Without a ChargingVoltage() or
Charging Current() loaded
5.60
5.55
5.50
5.45
5.40
5.35
5.30
5.25
5.20
_______________________________________________________________________________________
(BATTERY REMOVAL AND REINSERTION)
BATTERY REMOVED
0
ChargingVoltage() = 15000mV
ChargingCurrent() = 1000mA
CCV
CCI
PARAMETER
2
LOAD-TRANSIENT RESPONSE
4
LDO LOAD REGULATION
LOAD CURRENT (mA)
6
8
DD
2ms/div
DCIN
10
CCV
= +3.3V, V
CCI
12 14 16 18 20
= 20V, T
BATTERY INSERTED
CCV
CCI
MAX1645 toc01
BATT
SYMBOL
A
= +25°C, unless otherwise noted.)
t
WDT
t
DV
= +16.8V, V
16V
14V
12V
1A
0
1.5V
1V
0.5V
4.100
4.098
4.096
4.094
4.092
4.090
REFERENCE VOLTAGE LOAD REGULATION
DCIN
0
ChargingCurrent() = 3008mA
V
LOAD STEP: 0A TO 2A
I
SOURCE
BATT
CCI
CCS
LOAD-TRANSIENT RESPONSE
= 16V
50
= +18V, T
LIMIT = 2.5A
(STEP IN LOAD CURRENT)
CHARGE
LOAD CURRENT (µA)
100
CONDITIONS
1ms/div
A
= 128mA below this threshold.
CCI
150
= -40°C to +85°C, unless otherwise noted. Guaranteed by design.)
CCS
Typical Operating Characteristics
200
250
MAX1645 toc02
CCS
CCI
300
4A
2A
0
2A
1V
0
4.110
4.105
4.100
4.095
4.090
4.085
4.080
5.60
5.55
5.50
5.45
5.40
5.35
5.30
5.25
5.20
-40
MIN
140
5
I
LOAD
-20
= 0
10
LDO LINE REGULATION
REFERENCE VOLTAGE
vs. TEMPERATURE
0
TEMPERATURE (°C)
15
20
V
DCIN
(V)
MAX
40
210
20
1
60
25
UNITS
80
µs
s
100
30