MAX1645-MAX1645A Maxim, MAX1645-MAX1645A Datasheet - Page 4

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

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
T
Advanced Chemistry-Independent, Level 2
Battery Chargers with Input Current Limiting
4
A
DC-TO-DC CONVERTER SPECIFICATIONS
Minimum Off-Time
Maximum On-Time
Maximum Duty Cycle
LX Input Bias Current
LX Input Quiescent Current
BST Supply Current
DLOV Supply Current
Inductor Peak Current Limit
DHI Output Resistance
DLO Output Resistance
THERMISTOR COMPARATOR SPECIFICATIONS
THM Input Bias Current
Thermistor Overrange Threshold
Thermistor Cold Threshold
Thermistor Hot Threshold
Thermistor Underrange
Threshold
Thermistor Comparator
Threshold Hysteresis
SMB INTERFACE LEVEL SPECIFICATIONS (V
SDA/SCL Input Low Voltage
SDA/SCL Input High Voltage
SDA/SCL Input Hysteresis
SDA/SCL Input Bias Current
SDA Output Low Sink Current
INT Output High Leakage
INT Output Low Voltage
SMB INTERFACE TIMING SPECIFICATIONS (V
SCL High Period
SCL Low Period
Start Condition Setup Time
from SCL
Start Condition Hold Time
from SCL
SDA Setup Time from SCL
SDA Hold Time from SCL
= +25°C.)
_______________________________________________________________________________________
PARAMETER
DD
= +3.3V, V
SYMBOL
BATT
t
t
t
t
HD:STA
SU:DAT
HD:DAT
SU:STA
t
t
t
HIGH
LOW
t
OFF
ON
= +16.8V, V
V
V
DHI high
V
R
DHI high or low, V
DLO high or low, V
V
V
V
V
V
V
All 4 comparators, V
V
V
I
INT
DCIN
DCIN
DLOV
THM
DD
DD
DD
DD
DD
SDA
INT
CSI
DD
DD
= 1mA
= 2.8V to 5.65V
= 2.8V to 5.65V, V
= 2.8V to 5.65V, V
= 2.8V to 5.65V, V
= 2.8V to 5.65V, V
= 5.65V
= 50mΩ
= 2.8V to 5.65V)
= 0.4V
DCIN
= 4% of V
= 2.8V to 5.65V, Figures 4 and 5)
= 28V, V
= 0, V
= V
LDO
= +18V, T
BATT
, DLO low
BATT
CONDITIONS
DD
= V
BST
DLOV
to 96% of V
DD
= V
LX
A
- V
THM
THM
THM
THM
= 0°C to +85°C, unless otherwise noted. Typical values are at
= 2.8V to 5.65V
LX
= 20V
= 4.5V
LX
= 20V
falling
falling
falling
falling
= 4.5V
DD
,
89.5
MIN
250
5.0
1.4
4.7
4.7
99
74
22
-1
-1
1
5
6
6
4
4
0
99.99
TYP
1.25
75.5
23.5
200
220
6.0
7.5
10
91
25
6
5
6
6
1
MAX
92.5
500
200
1.5
7.0
0.6
15
15
10
14
14
77
25
1
1
9
1
1
% of V
% of V
% of V
% of V
% of V
UNITS
mA
ms
mV
mV
µA
µA
µA
µA
µA
µA
µA
µs
µs
µs
µs
µs
ns
ns
%
Ω
Ω
A
V
V
DD
DD
DD
DD
DD