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