SOT23 Dual-Input USB/AC Adapter 1-Cell Li+
Battery Chargers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DC
= 5V, V
USB
= 0, I
BAT
= 0, C
BAT
= 1µF, 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.
DC to GND......................................................................0 to +8V
DC to BAT .......................................................................0 to +7V
BAT, CHG, POK, USB to GND .................................-0.3V to +7V
Continuous Power Dissipation (T
A
= +70°C)
5-Pin Thin SOT23 (derate 9.1mW/°C above +70°C)....727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC
DC Voltage Range (Note 1) 3.7 7.0 V
DC to BAT Voltage Range 0.1 6.0 V
DC Undervoltage Lockout
Threshold
Input rising, 430mV hysteresis, V
BAT
= 3V (Note 1) 3.75 3.95 4.15 V
DC Supply Current 1.75 3 mA
DC to BAT On-Resistance V
DC
= 3.7V, V
BAT
= 3.6V 1 2 Ω
DC to BAT Dropout Voltage
When charging stops, V
BAT
= 4V,
DC falling, 200mV hysteresis
30 60 90 mV
USB
USB Voltage Range (Note 1) 3.7 6.0 V
USB Undervoltage Threshold
Input rising, 430mV hysteresis, V
DC
= 0,
V
BAT
= 3V (Note 1)
3.75 3.95 4.15 V
USB Supply Current V
USB
= 5V, V
DC
= 0 1.65 3 mA
USB to BAT On-Resistance V
USB
= 3.7V, V
BAT
= 3.6V, V
DC
= 0 2 4 Ω
USB to BAT Dropout Voltage
When charging stops, V
BAT
= 4V,
USB falling, 200mV hysteresis, V
DC
= 0
30 60 90 mV
BAT
BAT Regulation Voltage V
DC
or V
USB
= 5V 4.158 4.2 4.242 V
DC Charging Current V
BAT
= 3.3V, V
USB
= 0, V
DC
= 5V 220 280 340 mA
USB Charging Current V
BAT
= 3.3V, V
DC
= 0, V
USB
= 5V 80 90 100 mA
BAT Prequal Threshold V
BAT
rising, 100mV hysteresis 2.9 3 3.1 V
Prequalification Charging Current V
BAT
= 2.8V 20 40 80 mA
BAT Leakage Current V
DC
= V
USB
= 0, V
BAT
= 4.2V 5 µA
POK, CHG, AND THERMAL LIMIT
CHG Threshold
Charge current where CHG goes high,
I
BAT
falling, 50mA hysteresis
25 50 100 mA
CHG, POK Logic-Low Output I
CHG
, I
POK
= 10mA 150 300 mV
CHG, POK Leakage Current V
CHG
, V
POK
= 6V, T
A
= +25°C 0.001 1 µA
Thermal-Limit Temperature
Charge current reduced by 17mA/°C above this
temperature
+110 °C
