BQ24081 Datasheet, PDF (4/10 Pages) Texas Instruments – bq24081EVM 1-A Single-Chip Li-Ion and Li-Pol Charge Management IC Evaluation Module

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Test Summary
2.3.2 Equipment Setup
1. Connect the load board to the BAT+ and BAT–. Set switches SW1 and SW3 to closed and switch SW2
to off (center).
2. Connect a voltage meter, DMM1, to the BAT+/BAT– output to monitor the output voltage (range is 0 V
to 5 V).
3. Set the lab supply for 5.1 V ±0.1 Vdc, 1 A ±0.1 A current limit and then turn off supply. Connect DMM2
across R8 to monitor the current (R8 should be a 1% or better resistor if it is used for current
measurements).
4. Shunt jumpers should be installed on JPM1 and JPM2.
2.3.3 Procedure
1. Make sure the steps described in Section 2.3.2Equipment Setup are followed (SW1 and SW3 are set
to closed, and SW2 is set to off, shunts installed as shown in step 4, test board connected, and power
source set to 5.1 V ±0.1 Vdc). Turn on the power source.
2. Verify output voltage, BAT+, is between 2.5 Vdc and 2.9 Vdc and the red LED (D1) and green LEDs
(D2) are illuminated.
3. Momentarily short J5–2 to J1–1 (TS to DC+), and verify that charging stops (DMM2 < 0.5 mV).
Remove short and verify output voltage, BAT+, is between 2.5 Vdc and 2.9 Vdc.
4. Open switch SW1. Verify LED (D2) is off and the output voltage, BAT+, regulates between 4.16 Vdc
and 4.24 Vdc.
5. Close switch SW2 (to position 1) and verify output voltage, BAT+, is between 3.4 Vdc and 3.8 Vdc.
6. Verify that the charging current is between 0.6 A and 0.8 A (DMM2 is between 60 mVdc and
80 mVdc).
7. Open switch SW3, set switch SW2 to off and verify that the LEDs, (D1, D2), alternate being
illuminated.
8. Turn off power. Remove UUT from test apparatus. Repeat setup and test procedures for other
untested EVMs.
2.4 Ordering Information
EVM Part Number
bq24081EVM
Table 2. Ordering Information
Additional Devices
None
Chemistry
Li-Ion/Li-Poly
Pack Voltage
2.5 V to 4.2 V
Capacity
Any
4
bq24081EVM 1-A Single-Chip Li-Ion and Li-Pol Charge
Management IC Evaluation Module
SLUU261 – September 2006
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