BQ29330 Datasheet, PDF (5/26 Pages) Texas Instruments – 2-,3-,AND 4-CELL LITHIUM-ION OR LITHIUM-POLYMER BATTERY PROTECTION AFE

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bq29330
SLUS673A – SEPTEMBER 2005 – REVISED DECEMBER 2005
SAFETY STATE DIAGRAM
LEGEND:
UVLO = Undervoltage Lock Out
KEY:
Disabled = OFF and cannot be changed via firmware
Enabled= Can be changed by firmware
No Power Supply
Power Supply to PACK
Power Supply to PACK
UVLO Mode
CHG: OFF
DSG: OFF
ZVCHG: OFF
VREG: OFF
RST: HIGH
I² C: Disabled
Current Protection: Disabled
VCELL: Disabled
Watchdog: Disabled
Therm, Output: Disabled
Internal V_LED> 2.4 V
Internal
V_LED < 2.3 V
32 kHz Resumes
FirmwareCommand
Normal Mode
CHG: ON
DSG: ON
ZVCHG: OFF
VREG/VLED: 2.5V/3.3V
RST: Driven low
I²C: Enabled
after
t_RST
Current Protection: Enabled
VCELL: Enabled
Watchdog: Enabled
Therm, Output: Enabled
Firmware
Command
Firmware
Command
32 kHz Input Halted
and t _WTO expired
Firmware
Command
Firmware
Command
V_SR > V_OL or V_SCD for a period of t_OL or t_SCD
Respectively, or V_SR > V_SCC for a period
of t_SCC
WTO Mode
CHG: OFF
DSG: OFF
ZVCHG: OFF
VREG/VLED: 2.5 V/3.3 V
RST: Pulsed
I²C: Enabled
Current Protection: Enabled
VCELL: Enabled
Watchdog: Enabled
Therm, Output: Enabled
32 kHz Input Halted
and t_WTOexpired
Current Protection Mode
CHG: OFF
DSG: OFF
ZVCHG: OFF
VREG/VLED: 2.5 V/3.3 V
I²C: Enabled
Current Protection: Enabled
VCELL: Enabled
Watchdog: Enabled
Therm, Output: Enabled
Ship Mode
CHG: OFF
DSG: OFF
ZVCHG: OFF
VREG/VLED: OFF/OFF
I2C: Disabled
Current Protection: Disabled
VCELL: Disabled
Watchdog: Disabled
Therm, Output: Disabled
Firmware Command
& No Supply to PACK
No supply PACK
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DSG: OFF
Firmware
Command
Sleep Mode
CHG: OFF
DSG: OFF
ZVCHG: OFF
VREG/VLED: ON/ON
I² C: Enabled
Current Protection: Enabled
VCELL: Enabled
Watchdog: Enabled
Therm, Output: Disabled
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