MAX1879 Maxim, MAX1879 Datasheet - Page 2

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

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
Simple, Efficient, 1-Cell Li+ Pulse Charger
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
+85°C, unless otherwise noted. Typical values are at T
2
Input Voltage (Note 1)
Undervoltage Lockout Trip Point
Undervoltage Lockout Trip-Point
Hysteresis
Fast-Charge Qualification
Threshold
Fast-Charge Restart Threshold
Fast-Charge Reset Threshold
Delay
Precharge Source Current
BATT Regulation Voltage
BATT Regulation Adjust Range
ADJ Source Impedance
ADJ Output Voltage
BATT Removal Detection
Threshold
BATT Removal Detection
Threshold Hysteresis
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
Timer Accuracy
CHG Output Leakage Current
CHG Output Sink Current
IN
_______________________________________________________________________________________
= V
CHG
PARAMETER
= +10V, V
BATT
= +4.2V, TSEL = GND, GATE = unconnected, ADJ = unconnected, THERM = 10kΩ to GND, T
SYMBOL
I
I
BATT
BATT
V
I
I
IN
IN
IN
External PMOS FET off
BATT rising
BATT falling
BATT rising, transition from precharge to
full current
BATT falling, transition from Done to
Prequalification state (Note 2)
(Note 3)
V
No load on ADJ
BATT rising
BATT falling
V
V
V
V
V
V
V
A
BATT
IN
BATT
BATT
BATT
BATT
CHG
CHG
= +25°C.)
≤ V
= 22V, CHG = high
= 1.0V, CHG = low
= 2V
= 4.0V
= 4.25V, V
= 4.0V, V
= 4.25V, V
BATT
- 0.3V
CONDITIONS
IN
Continuous Power Dissipation (T A = +70°C)
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
IN
IN
= 4.0V
8-Pin µMAX (derate 4.1mW/°C above +70°C) ............ 330mW
present
= 22V
4.1685
2.425
1.393
4.875
3.92
MIN
-10
4.4
2.1
4.0
9.8
-1
5
4
4.2000
1.400
TYP
4.00
125
900
700
2.2
2.5
0.1
60
10
85
50
1
5
5
8
4.2315
2.575
1.407
5.125
MAX
1500
1200
4.08
10.2
200
500
+10
2.3
4.2
1.5
22
12
+1
6
A
= 0°C to
UNITS
mV
mA
mV
mA
ms
kΩ
µA
µA
µA
µA
µA
µA
%
V
V
V
V
V
V
V
V