MAX1879 Maxim, MAX1879 Datasheet - Page 3

• Manufacturer Part Number: MAX1879
• Description: Simple / Efficient / 1-Cell Li+ Pulse Charger
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
+85°C, unless otherwise noted. Typical values are at T
ELECTRICAL CHARACTERISTICS
(V
+85°C, unless otherwise noted.) (Note 5)
THERM Sense Current (for hot
qualification)
THERM Sense Current (for cold
qualification)
THERM Sense Voltage Trip Point
GATE Source Current
GATE Sink Current
GATE Drive Current at Battery
Removal
Input Voltage (Note 1)
Undervoltage Lockout Trip Point
Fast-Charge Qualification
Threshold
Fast-Charge Restart Threshold
Precharge Source Current
BATT Regulation Voltage
BATT Regulation Adjust Range
ADJ Source Impedance
ADJ Output Voltage
BATT Removal Detection
Threshold
BATT Input Current (Note 4)
BATT Input Current, Fast-Charge
State
BATT Input Current, Done State
IN Input Current, Fast-Charge
State
IN Input Current, Done State
CHG Output Leakage Current
CHG Output Sink Current
IN
IN
= V
= V
CHG
CHG
PARAMETER
PARAMETER
= +10V, V
= +10V, V
Simple, Efficient, 1-Cell Li+ Pulse Charger
_______________________________________________________________________________________
BATT
BATT
= +4.2V, TSEL = GND, GATE = unconnected, ADJ = unconnected, THERM = 10kΩ to GND, T
= +4.2V, TSEL = GND, GATE = unconnected, ADJ = unconnected, THERM = 10kΩ to GN
SYMBOL
SYMBOL
I
I
BATT
BATT
V
I
I
IN
IN
IN
V
V
V
External PMOS FET off
BATT rising
BATT rising, transition from precharge to
full current
BATT falling, transition from Done to
Prequalification state (Note 2)
V
No load on ADJ
BATT rising
V
V
V
V
V
V
V
A
IN
IN
BATT
BATT
IN
BATT
BATT
BATT
BATT
CHG
CHG
= +25°C.)
= 10V, V
= 10V, V
≤ V
= 22V, CHG = high
= 1.0V, CHG = low
= 5.1V, gate driven high
= 2V
= 4.0V
= 4.25V, V
= 4.0V, V
= 4.25V, V
BATT
GATE
GATE
- 0.3V
CONDITIONS
CONDITIONS
IN
IN
IN
= 8V
= 8V
= 4.0V
present
= 22V
4.137
1.379
1.383
47.8
2.05
2.35
3.88
4.85
MIN
346
MIN
4.6
4.0
9.8
4.5
75
19
18
-1
4
352.9
TYP
48.8
1.40
100
25
40
4.263
1.421
1.417
MAX
MAX
1500
1500
49.8
2.35
2.65
4.12
10.2
5.15
360
125
300
600
4.2
1.5
31
60
+1
22
12
, T A
6
A
= -40°C to
= 0°C to
UNITS
UNITS
mA
mA
mA
µA
µA
µA
µA
kΩ
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
3