Texas Instruments BQ2004H Evaluation Module for NiCd/NiMH, switchmode, up to 3A DV2004HS1 DV2004HS1 데이터 시트

제품 코드
DV2004HS1
다운로드
페이지 6
TM1 and TM2 (JP4 and JP5): Select fast charge
safety time/hold-off/top-off (see bq2004/E/H data sheet).
Number of Cells (JP6): A resistor-divider network is
provided to select 4 to 10 cells (the resulting resistor
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 (LED3 optional)
display state (see bq2004E data sheet, Table 2, page 5).
VSEL (JP3): Selects -
∆V or peak-voltage detection, or
disables voltage-based termination (see bq2004E data
ssheet, page 7).
AUTO DIS SELECT (JP7): Jumping JP7 enables auto-
matic discharge-before-charge.
AUTO CYCLE SELECT (JP8): Jumping JP8 auto-
matically initiates a continuous discharge-before-
charge/fast-charge cycling for data collection purposes.
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 or auto-cycle
options, 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.
3
DV2004S1/ES1/HS1
Rev. C Board
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
-
-
24
V
V
THERM
THERM input voltage
0
-
5
V
I
DSCHG
Discharge load current
-
-
2
A
Note:
1.
The V
DC+
limits consider the appropriate Zener diode at D5. The voltage at D5 is application-specific
and limits the V
GS
of Q4 to a safe enhancement value during Q4 conduction. See Table 1 for recom-
mended D5 selections per V
DC+
.
Recommended DC Operating Conditions
Closed Jumper
Number of Cells
RB25
User-selectable
RB24
10
RB23
8
RB22
6
RB21
5
RB20
4