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Test Summary
1.4
Controls and Key Parameters Setting
Jack
(1)
Description
Factory Setting
JP1
If on, high-side sensing resistor is disabled
Jumper on
JP2
Reserved for other ICs
Jumper (BATEN, GND) on
JP3
bq24351 GATDRV pin
Jumper off
JP4
bq2057C BAT pin connection to bq24351
Jumper on
JP5
bq2057C VCC pin connection to bq24351
Jumper on
JP6
bq2057C CC pin connection to bq24351
Jumper on
JP7
If on, low-side current-sensing resistor is disabled
Jumper off
(1)
Short JP1, JP4, JP5, and JP6, and disconnect JP7 to use onboard bq2057C as charger; to use external charger to control
bq24351, disconnect JP1, JP4, JP5, and JP6 and short JP7.
1.5
Recommended Operating Conditions
Symbol
Description
MIN
TYP
MAX
Unit
Supply voltage, V
IN
Input voltage from ac adapter input
4.5
5
26
V
Battery voltage, V
BAT
Voltage applied at VBAT terminal of J4
0
3–4.2
5
V
Supply current, I
AC
Maximum input current from ac adapter input
0
1.5
A
Charge current, I
chrg
Battery charge current
0.05
0.56
1
A
Operating junction temperature range, T
J
0
125
°C
2
Test Summary
2.1
Definitions
This procedure details how to configure the evaluation board. On the test procedure, the following naming
conventions are followed. See the schematic for details.
VXXX
External voltage supply name (VIN, VBAT, VOUT)
LOADW
External load name (LOADR, LOADI)
V(TPyyy)
Voltage at internal test point TPyyy. For example, V(TP1) means the voltage at
TP1.
V(Jxx):
Voltage at jack terminal Jxx.
V(TP(XXXXX))
Voltage at test point XXXXX. For example, V(ACDET) means the voltage at the
test point which is marked as ACDET.
V(XXX, YYY)
Voltage across points XXX and YYY.
I(JXX(YYY))
Current going out from the YYY terminal of jack XX.
Jxx(BBB)
Terminal or pin BBB of jack xx
Jxx ON
Internal jumper Jxx terminals are shorted
Jxx OFF
Internal jumper Jxx terminals are open
Jxx (-YY-) ON
Internal jumper Jxx adjacent terminals marked as YY are shorted
Measure
→
A,B
Check specified parameters A, B. If measured values are not within specified
limits, the unit under test has failed.
Observe
→
A,B
Observe if A, B occur. If they do not occur, the unit under test has failed.
Assembly drawings show locations for jumpers, test points, and individual components.
2.2
Equipment
2.2.1
Power Supplies
Power supply 1 (PS 1): a power supply capable of supplying 15 V at 2 A is required.
3
SLUU455 – October 2010
bq24351EVM for Li-Ion Charger Front-End Protection IC
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