Datasheet

Number of Cells (JP4): A resistor-divider network is
provided to select 2 to 16 cells (the resulting resistor
value equals N – 1 cells). RB1 is a 200K
Ω
resistor, and
RB2 (R16–R22) is jumper-selected.
Temperature Disable: Connecting a 10K
Ω
resistor be
-
tween THERM and BAT– disables temperature control.
Setup Procedure
1. Configure DVEN, TM1, TM2, and number-of-cells
(NOC) jumpers.
2. Connect the provided thermistor or a 10K
Ω
resistor
between THERM and BAT-.
Note: RT1 and RT2 match the thermistor provided
and must be changed if a different thermistor type
is used (see Appendix A in the application note,
“Using the bq2003 to Control Fast Charge”).
3. If using the discharge-before-charge option, connect
a current-limiting discharge load between BAT+
and DSCHG.
4. If using the INHIBIT function, connect a switch
across JP5 (IN to +V) or connect IN to the control
-
ling signal source (3–5V).
5. Attach the battery pack to BAT+ and BAT-. For
temperature control, the thermistor must contact
the cwlls.
6. Attach DC current source to DC+ (+) and GND (-)
connections in JP6.
3
DV2003S1
Symbol Description Minimum Typical Maximum Unit Notes
I
DC+
Maximum input current - - 2.4 A
V
DC
Maximum input voltage
2.0 + V
BAT+
or 15
-
18 + V
BAT+
or 35
V Note 1
V
BAT+
BAT+ input voltage - - 30 V
V
THERM
THERM input signal 0 - 5 V
I
DSCHG
Discharge load current - - 2 A
Note: 1. The V
DC+
limits consider the 5.1V Zener diode at D9. The voltage at D9 is application-specific and
limits the V
GS
of Q1 to a safe enhancement value during Q1 conduction. See Table 1 for recommended
D9 selections per V
DC+
.
Recommended DC Operating Conditions
Closed Jumper Number of Cells
R22 14
R21 12
R20 10
R19 8
R18 6
R17 5
R16 4