BQ28Z560-R1_14 Datasheet, PDF (18/61 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge

bq28z560-R1
SLUSBD3 – APRIL 2013
Not Recommended For New Designs
Shutdown
CHG: OFF
DSG: OFF
VREG: OFF
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Attach a Charge
No Charger
Short-Circuit
Protection
CHG: ON
DSG: OFF
VREG: ON
VM >VBAT – 0.9 V
for a period of t > 400 µs
VM < 0.15 V
or
No Load detected
VBAT > 2.3 V
for a period of
t > 4.0 ms
Over-Discharge
Protection
CHG: ON
DSG: OFF
VREG: OFF
VBAT < 2.3 V
for a period of t > 24 ms
Overcurrent Protection
During Discharging
CHG: ON
DSG: OFF
VREG: ON
VM > 0.15 V for a period
of 12 ms
VM < 0.15 V or
No Load detected
for a period of 4.0 ms
Normal
CHG: ON
DSG: ON
VREG: ON
VM < –0.112 V
for a period of 12 ms
VBAT > 4.25 V
for a period
of 1.0 s
VBAT < 4.07 V
for a period of 8.0 ms
Overcurrent Protection
During Charging
CHG: OFF
DSG: ON
VREG: ON
Charger removed and
Load detected
for a period of 4.0 ms
Overcharge
Voltage Protection
CHG: OFF
DSG: ON
VREG: ON
Figure 6. FET Control Protection
NOTE
When the CHG FET or DSG FET is turned OFF due to fault conditions, bus
communication is not valid. The bus communication will only be activated by removal of
the fault condition (see Table 2).
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