Dual-Input, USB/AC Adapter, 1-Cell

Li+ Charger with OVP and Thermal Regulation

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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, DCOK to GND .................................................-0.3V to +20V

DCLV, BYP, USB, UOK, DCI, REF, USEL, THRM,

EN, BATT, CHG, PON to GND .............................-0.3V to +7V

PGND to GND .......................................................-0.3V to +0.3V

Continuous Current (DCLV) ..................................................1.1A

Continuous Current (USB) ....................................................0.6A

(derate 21.3mW/°C above +70°C) ...................................1.7W

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Maximum Junction Temperature .....................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT VOLTAGE RANGES AND INPUT CURRENT

Maximum DC Input Voltage with

Overvoltage Protection

Q2 input MOSFET must be in place; charging

occurs only below 6.2V, Figures 3, 4, and 5

18

V

Maximum DC Input Voltage Without

Overvoltage Protection

DC = DCLV, Q2 input MOSFET not on circuit,

Figure 2

6.5

V

Maximum Input Voltage for Charging

6.0

6.2

6.5

V

2

4

DC Supply Current

4

6

mA

DCLV Operating Voltage Range

4.35

6.00

V

DCLV Shutdown Supply Current

300

500

µA

USB Input Voltage Range

4.35

6.50

V

500

750

µA

2

3

mA

USB Supply Current

160

300

µA

DCI Input Current

1

100

nA

BYP Output Resistance

(Note 1)

5

Ω

THRM Input Bias Current

1

100

nA

BATTERY VOLTAGE

BATT Regulation Voltage

4.1685

4.20

4.2315

V

BATT Prequal Voltage Threshold

BATT rising

2.8

3

3.2

V

Prequal Threshold Hysteresis

70

mV

100

USB Charging Headroom

200

mV

DC Charging Headroom

250

mV

REF Voltage (Buffered Output)

does not affect BATT regulation accuracy

2.94

3

3.06

V