Datasheet

value equals
N
2
– 1 cells). RB1 is a 150K
Ω
resistor, and
RB2 (RB20–RB25) is jumper-selected.
Temperature Disable: Connecting a 10K
Ω
resistor be
-
tween THERM and SNS disables temperature control.
DSEL (JP2): Selects LED1 and LED2 display state (see
bq2004 data sheet, Table 2).
VSEL (JP3): Selects -
∆
V or peak-voltage detection, or
disables voltage-based termination (see bq2004 data
sheet).
AUTO DIS SELECT (JP7): Jumping JP7 enables auto
-
matic discharge-before-charge.
Setup Procedure
1. Configure VSEL, TM1, TM2, DSEL, INH, and
number-of-cells (NOC) jumpers.
2. Connect the provided thermistor or a 10K
Ω
resistor
between THERM and SNS.
3. If using the discharge-before-charge option, connect
a current-limiting discharge load between BAT and
LOAD.
4. Attach the battery pack to BAT and SNS. For tem
-
perature control, the thermistor must contact the
cells.
5. Attach DC current source to DC (+) and GND (-)
connections in J1. (Note: Capacitors C2 and C3
must be changed from those shipped with the board
for input voltage in excess of 25V.)
3
DV2004L1
Rev. B Board
Symbol Description Minimum Typical Maximum Unit Notes
I
DC
Maximum input current - - 3 A
V
DC
Maximum input voltage
2.0+V
BAT
or 8.5
-
18 + V
BAT
or 35
V Note 1
V
BAT
BAT input voltage - - 24 V
V
THERM
THERM input voltage 0 - 5 V
I
DSCHG
Discharge load current - - 2 A
Note: 1. The voltage at R14 is application-specific and limits the dissipation of Q2 to a safe limit during Q4
conduction. See Table 1 for recommended R14 selections per V
DC+
and I
CHARGE
.
Recommended DC Operating Conditions