MAX1758 Maxim, MAX1758 Datasheet - Page 6

• Manufacturer Part Number: MAX1758
• Description: Stand-Alone / Switch-Mode Li Battery Charger with Internal 28V Switch
• Manufacturer: Maxim

Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 28V Switch
6
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
V
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 peak inductor current falls below this threshold, FULLCHG output switches high.
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
CONTROL INPUTS/OUTPUTS
BATT Undervoltage Threshold
(Note 3)
BATT Overvoltage Threshold
(Note 4)
FULLCHG BATT Current
Termination Threshold (Note 5)
Temperature Measurement
Frequency
SHDN Input Voltage High
SHDN Input Voltage Low
ISETIN
_______________________________________________________________________________________
= V
Battery 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
= 18V, V
CONDITIONS
SHDN
= V
VL
, V
BATT
CELL
reduced to 10% of full scale.
= GND, V
BATT
MIN
4.55
0.93
250
2.4
1.4
= V
CS
= 4.2V, V
TYP
MAX
VADJ
1.37
400
2.6
4.8
0.6
= V
UNITS
V/cell
V/cell
REF
mA
Hz
V
V
/ 2,