Datasheet
SLUU156 – April 2003
8
bq24022 (bqTINY-II) Evaluation Module
2.3.3 Procedure
1. Make sure the steps described in Section 2.3.2 Equipment Setup are followed (SW1 and SW3 are
set to closed, and SW2 is set to off, shunts installed as listed in step 4, test board connected, and
power source set to 5.1 V ± 0.1 V
DC
). Turn on the power source.
2. Verify that output voltage, BAT+, is between 2.5 V
DC
and 2.9 V
DC
and the red LED (D1) and green
LEDs (D2 and D3) are illuminated.
3. Momentarily short J5–2 to J1–1 (CE to DC+) and verify that charging stops (DMM2 < 0.5mV).
Remove short and verify output voltage, BAT+, is between 2.5 V
DC
and 2.9 V
DC
.
4. Open switch SW1. Verify LED (D2) is off and the output voltage, BAT+, regulates between
4.160 V
DC
and 4.240 V
DC
.
5. Close switch SW2 (to position 1) and verify output voltage, BAT+, is between 3.4 V
DC
and 3.8 V
DC
.
6. Verify that the charging current is between 0.6 A and 0.8 A (DMM2 is between 60mVDC and
80mV
DC
).
7. Open switch SW3, set switch SW2 to off and verify that the LEDs, D1 and D2, alternate being
illuminated.
8. Turn off J1 power source, set jumper to J6–USB, SW2–off, and close switches SW1 and SW3.
Plug in USB power source, verify output voltage, BAT+, regulates between 2.5 V
DC
and 2.9 V
DC
and both LEDs (D1, D2) are illuminated.
9. Open and close switch SW1, verify output voltage, VBAT+, regulates between 4.160 V
DC
and
4.240 V
DC
and LED (D2) is off.
10. Open switch SW1, close switch SW2 (to position 2) and verify output voltage, VBAT+, regulates
between 3.1 V
DC
and 3.5 v.
11. Set switch SW2 to off and set jumper to J3–0.1. Verify output voltage, VBAT+, regulates between
4.160 V
DC
and 4.240 V
DC
.
12. Close switch SW1 and verify VBAT+ output is between 3.1 V
DC
and 3.5 V
DC
.
13. Verify that the charge current is between 0.078 A and 0.105 A (7.8 mV and 10.5 mV).
14. Turn off power and set jumper to J6–DC+. Remove UUT from test apparatus. Repeat setup and
test procedures for other untested EVMs.
2.4 Ordering Information
Table 3. Ordering Information
EVM Part Number Additional Devices Chemistry Pack Voltage Capacity
bq24022EVM None Li-Ion/Li-Poly 2.5 V to 4.2 V Any