BQ28Z560-R1 datasheet(18/60 Pages) TI1

18 / 60 page

No Charger

Attach a Charge

Normal

Overcharge

Voltage Protection

Overcurrent Protection

During Charging

Shutdown

Short-Circuit

Protection

Over-Discharge

Protection

CHG: ON

DSG: OFF

VREG: ON

CHG: ON

DSG: OFF

VREG: ON

CHG: OFF

DSG: ON

VREG: ON

CHG: OFF

DSG: ON

VREG: ON

CHG: ON

DSG: ON

VREG: ON

CHG: OFF

DSG: OFF

VREG: OFF

CHG: ON

DSG: OFF

VREG: OFF

for a period of

t > 4.0 ms

VM >

– 0.9 V

for a period of t > 400 µs

VM < 0.15 V

No Load detected

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

VM < –0.112 V

for a period of 12 ms

Charger removed and

Load detected

for a period of 4.0 ms

> 4.25 V

for a period

of 1.0 s

< 2.3 V

for a period of t > 24 ms

During Discharging

Overcurrent Protection

> 2.3 V

BAT

< 4.07 V

for a period of 8.0 ms

BAT

bq28z560-R1

SLUSBD3 – APRIL 2013

www.ti.com

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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