MAX1757 Maxim, MAX1757 Datasheet - Page 6

• Manufacturer Part Number: MAX1757
• Description: Stand-Alone / Switch-Mode Li Battery Charger with Internal 14V Switch
• Manufacturer: Maxim

Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
V
6
Note 1: When V
Note 2: See Thermistor section.
Note 3: Below this threshold, charger reverts to a prequalification mode with I
Note 4: Above this threshold, charger is disabled.
Note 5: After full-charge state is complete and BATT current falls below this threshold, FULLCHG output switches high. Battery
Note 6: After charging is complete, when BATT voltage falls below this threshold, a new charging cycle is initiated.
Note 7: Specifications to -40°C are guaranteed by design, not production tested.
CONTROL INPUTS/OUTPUTS
ISETIN
FULLCHG BATT Current
Termination Threshold (Note 5)
Temperature Measurement
Frequency
SHDN Input Voltage High
SHDN Input Voltage Low
_______________________________________________________________________________________
= V
charging continues until top-off timeout occurs. See Table 1.
PARAMETER
ISETOUT
ISETOUT
= V
DCIN
REF
= 0, battery charger turns off.
, R
= V
THM
HSD
= 10kΩ, T
SYMBOL
= V
V
V
CSSP
IH
IL
A
= V
= -40°C to +85°C, unless otherwise noted.) (Note 7)
CSSN
= 12V, V
CONDITIONS
SHDN
= V
VL
, V
BATT
CELL
reduced to 10% of full scale.
= GND, V
BATT
0.93
MIN
250
1.4
= V
CS
TYP
= 4.2V, V
MAX
1.37
400
0.6
VADJ
= V
UNITS
mA
Hz
REF
V
V
/2,