Datasheet

Setup
2-2
2.1 Setup
The bq24001/2/3/7 EVM board requires a dc power source (0–6VDC, ≥ 1.1 A
or equivalent to provide input power and a single-cell lithium-ion or lithium-
polymer battery to charge. Adjust the power supply for 5.1 V ±0.1 VDC and set
the current limit to 1.3 A ±0.2 A. Power down the supply.
The test setup connections and jumper setting selections are listed below.
2.1.1 I/O Connections
Jack Connect to:
J1 – DC+ Power source positive output
J1 – DC– Power source negative output
J7 – BAT+ Positive lead of single lithium ion cell
J7 – DC– Negative lead of single lithium ion cell
J7 – SENSE+ Tie to battery’s positive terminal
J8 – THRM Tie to thermistor lead in battery pack
J8 – DC–
Tie to other thermistor lead (may be same wire as BAT–)
2.1.2 Jumper-Selectable Configuration (Factory Set to Bold Selections)
Jumper Selection
J2 Adapter power good (APG) or battery thermistor, APG/THRM
J3
†
Enable, ON/OFF
J4 Regulation voltage per cell, 4.2 V/4.1 V
J5 Timer, 3-hour (float, no jumper),/4.5-hour/6-hour
J6
Stat2 green diode, jumper for bq24002/3
†
This jumper enables/disables the IC for bq24001/2/3. For bq24007, this jumper enables/disables
the change timer.
2.2 Test Procedures
2.2.1 For Single-Cell Applications
Set up the evaluation board as described above, by making the necessary I/O
connections and jumper selections.
Note:
Before test and evaluation, it is important to verify that the maximum power
dissipation on the IC is not exceeded. Pmax = 2.3 W.
P
diss, single cell
= (V
I
– 3.5 V) × I
CHG
where V
I
= V
DC+
–0.1 V
Note:
V
I
, for a single cell, should not exceed 5.9 VDC for the 1-A charge rate and
8.1 V for the .5-A charge rate.
Turn on the power supply previously set for 5.1 V. The red LED illuminates to
indicate charging, unless there is a fault or the battery is fully charged.