MAX1679 Datasheet, PDF (2/12 Pages) Maxim Integrated Products – Single-Cell Li Battery Charger for Current-Limited Supply

Single-Cell Li+ Battery Charger
for Current-Limited Supply
ABSOLUTE MAXIMUM RATINGS
IN, CHG, GATE to GND ........................................ -0.3V to +26V
BATT, TSEL, THERM, ADJ to GND ........................ -0.3V to +6V
GATE to IN................................................................-6V to +0.3V
THERM, ADJ to BATT...............................................-6V to +0.3V
GATE Continuous Current ................................................ -10mA
Continuous Power Dissipation (T_A = +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) ........... 330mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10sec) ............................ +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V_IN = V _CHG = +10V, V_BATT = +4.2V, TSEL = GND, GATE = unconnected, ADJ = unconnected, THERM = 10kΩ to GND, T_A = 0°C
to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage (Note 1)
V_IN External PMOS FET off
5
22
V
Input Voltage for Removable
Battery (Note 1)
V_IN External PMOS FET off
6
22
V
Undervoltage Lockout Trip Point
V_BATT rising
2.1
2.2
2.3
V
Undervoltage Lockout Trip-Point
Hysteresis
V_BATT falling
60
mV
Fast-Charge Qualification
Threshold
V_BATT rising, transition from precharge to full
current
2.425 2.500 2.575
V
Fast-Charge Restart Threshold
Precharge Source Current
BATT Regulation Voltage
BATT Regulation Adjust Range
ADJ Source Impedance
ADJ Output Voltage
Battery Removal Detection
Threshold
Battery Removal Detection
Threshold Hysteresis
BATT Input Current (Note 2)
BATT Input Current, Fast-
Charge State
BATT Input Current, Done State
IN Input Current, Fast-Charge
State
IN Input Current, Done State
Timer Accuracy
CHG Output Leakage Current
I_BATT
I_BATT
I_IN
I_IN
V_BATT falling, transition from DONE to
PREQUAL state (Figure 2)
V_BATT = 2V
No load on ADJ
V_BATT rising
V_BATT falling
V_IN ≤ V_BATT -0.3V
V_BATT = 4V
V_BATT = 4.25V
V_BATT = 4V, V_IN = 4V
V_BATT = 4.25V, V_IN = 22V
See Table 3
V _CHG = 22V, CHG = high
3.783 3.89 4.00
V
4
5
6
mA
4.1685 4.2000 4.2315 V
4.0
4.2
V
9.8
10
10.2
kΩ
1.393 1.400 1.407
V
4.875 5.0 5.125
V
%
125
mV
0.1
1
µA
900 1500 µA
500 1000 µA
30
100
µA
250
600
µA
-10
+10
%
-1
+1
µA
2 _______________________________________________________________________________________