3

FG2148-1.eps

Battery Pack

B4N

B3N B2N B1N

B1P

NEG

POS

bq2148

Load

Charger

Cells

PACK+

PACK-

Figure 1. Module Connection Diagram

FG2158cc.eps

B1P

NC

Load

or

Charger

Three-Cell Configuration

POS

NEG

B1N

B2N

B3N

B4N

B1P

Load

or

Charger

Four-Cell Configuration

POS

NEG

B1N

B2N

B3N

B4N

Note: B1P, B4N, POS, and NEG accomodate a #20 AWG stranded wire.

B1N, B2N, and B3N accomodate a #24 AWG stranded wire.

Figure 1. Module Connection Diagram

Absolute Maximum Ratings

Symbol

Parameter

Value

Unit

Conditions

Supply voltage (B1P to B4N)

18

V

DC

Maximum transient voltage (B1P to B4N)

32

V

Maximum duration =

1.5

µs

Charging voltage (POS to NEG)

18

V

Continuous charge/discharge current

3.9

A

°C

Operating temperature

0 to +70

°C

Storage temperature

-55 to +125

°C

Note:

Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation

should be limited to the Recommended DC Operating Conditions detailed in this data sheet. Exposure to con-

ditions beyond the operational limits for extended periods of time may affect device reliability.