High-Frequency,

Low-Cost SMBus Chargers

2 ______________________________________________________________________________________

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.

DCIN, CSSP, BATT, CSIP to GND......................... -0.3V to +28V

CSIP to CSIN, CSSP to CSSN .............................. -0.3V to +0.3V

ADAPTLIM, ACOK to GND.................................. -0.3V to +6V

PDSL to GND......................................................... -0.3V to +37V

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

BST to LX................................................................. -0.3V to +6V

BST to GND........................................................... -0.3V to +34V

LX to GND ............................................................... -6V to +28V

LDO Short Circuit to GND ......................................... Momentary

24-Pin, 4mm x 4mm Thin QFN

(derate 20.8mW/NC above +70NC) ............................1666mW

Operating Temperature Range .......................... -40NC to +85NC

Junction Temperature .....................................................+150NC

Storage Temperature Range............................ -65NC to +150NC

Lead Temperature (soldering, 10s).................................+300NC

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT SUPPLIES

Adapter Present Quiescent

Current (Note 1)

Charging enabled,

3

6

mA

Charging disabled

1.5

2.2

mA

BATT + CSIP + CSIN +

LX Input Current

Adapter absent or

charger shut down

(Note 1)

1.5

F

A

200

650

DCIN Input Current

Charger disabled

0.7

1.0

mA

Charger added

1.5

2.5

mA

DCIN Input-Voltage Range

for Charger

8

26

V

DCIN Undervoltage-Lockout

Trip Point for Charger

7

7.2

V

7.7

7.9

DCIN Input-Voltage Range

8

24

V

CHARGE-VOLTAGE REGULATION

Battery Full-Charge Voltage

and Accuracy

ChargingVoltage() = 0x41A0

16.733

16.8

16.867

V

-0.4

+0.4

%

ChargingVoltage() = 0x3130

12.516 12.592 12.668

V

-0.6

+0.6

%

ChargingVoltage() = 0x20D0

8.333

8.4

8.467

V

-0.8

+0.8

%

ChargingVoltage() = 0x1060

4.15

4.192

4.234

V

-1.0

+1.0

%

Battery Undervoltage-Lockout

Trip Point for Trickle Charge

3

3.5

4

V