USB-Powered Li+ Charger
ABSOLUTE MAXIMUM RATINGS
IN, BATT, SELI, CHG, EN to GND ..............................-0.3V to 7V
SELV to GND ...............................................-0.3V to (V + 0.3V)
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Maximum Die Temperature..............................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
IN
Continuous Power Dissipation (T = +70°C)
A
8-Pin SO (derate 17.5mW/°C above +70°C)....................1.4W
Short-Circuit Duration.................................................Continuous
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 = 4.5V, EN = IN, T = 0°C to +85°C, unless otherwise noted.)
IN
A
PARAMETER
CONDITIONS
MIN
4.35
3.75
TYP
MAX
6.50
4.05
UNITS
V
Input Supply Voltage
Input Undervoltage Lockout
Input Undervoltage Lockout Hysteresis
I
rising
V
IN
50
0.9
2.5
mV
mA
µA
Operating, EN = IN, no load
Shutdown, EN = GND
2.0
5.0
Input Supply Current
Charging Headroom
Precondition Threshold
SELI = GND (100mA mode),
100
200
V
= 4.35V
IN
mV
SELI = IN (500mA mode)
BATT rising, transition from precondition to
charge mode
2.3
2.5
2.7
1.0
V
Precondition Threshold Hysteresis
CHG Output Leakage Current
CHG Output Low Voltage
80
mV
µA
V
V
= V
= 6.5V
CHG
0.1
IN
I
= 10mA
0.4
500
100
70
SINK
V
= V = 5.5V, V = 2.7V
BATT
455
85
43
SELI
IN
Charging Current
mA
SELI = GND, V = 5.5V, V
= 2.7V
IN
BATT
V
= 2V, SELI = GND or IN
20
BATT
SELV = GND, I
= 0
4.08
4.18
4.10
4.12
BATT
BATT Regulation Voltage
V
SELV = IN, I
= 0
4.20
4.22
BATT
BATT Leakage Current (Input
Power Removed)
V
= 4.2V, EN = IN = GND
1
5
µA
BATT
BATT Shutdown Current
EN = GND, V
= 4.2V
0.1
2
µA
V
BATT
Logic Input Low Voltage (EN, SELI, SELV)
Logic Input High Voltage (EN, SELI, SELV)
Logic Input Leakage Current (EN, SELI)
Logic Input Leakage Current (SELV)
V
V
V
V
= 4.35V to 6.5V
= 4.35V to 6.5V
0.8
IN
IN
IN
IN
2.0
V
= 0 to 6.5V; V
= 0 to 6.5V, V
, V = 6.5V or GND
SELI EN
1
1
µA
µA
= V or GND
SELV
IN
Die temperature beyond which charging
current is reduced
Thermal Regulation
125
C
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
