BQ29312A Datasheet, PDF (9/35 Pages) Texas Instruments – TWO-CELL, THREE-CELL, AND FOUR-CELL LITHIUM-ION OR LITHIUM-POLYMER BATTERY PROTECTION AFE

www.ti.com
STATE DIAGRAM
bq29312A
SLUS629A – JANUARY 2005 – REVISED AUGUST 2005
No Power
POWER SUPPLY TO PACK
INITIALIZE
FETS: OFF(*2)
REG: start Working
I²C: OFF
CURRENT FAULT : OFF
CELL MONITOR : OFF
WATCHDOG : OFF
THERMISTOR PWER CTRL : OFF
SHIP MODE EXIT BY POWER
SUPPLY TO PACK
HOST FAULT MODE
FETS: OFF
REG: ON
I²C: ON
CURRENT FAULT : OFF
CELL MONITOR : OFF
WATCHDOG : ON
THERMISTOR PWER CTRL : OFF
REG >2.4 V
REG < 2.3 V
IFAULT
RESET CURRENT LATCH
NORMAL MODE
FETS: ON *2
REG: ON
I²C: ON
CURRENT FAULT : ON
CELL MONITOR : ON
WATCHDOG : ON
THERMISTOR PWER CTRL : ON
HOST CLOCK STOP
RESET WDTF LATCH
STATE CTL REGISTER b1 = 1
AND NO SUPPLY POWER TO PACK
STATE CTL REGISTER b0 = 1
or SLEEP PIN = REG or OPEN
*1
SLEEP MODE EXIT BY
STATE CTL REGISTER b0 = 0
AND SLEEP PIN = GND
*1
CURRENT DETECT MODE
FETS: OFF
REG: ON
I²C: ON
CURRENT FAULT : ON
CELL MONITOR : ON
WATCHDOG : ON
THERMISTOR PWER CTRL : ON
SLEEP MODE
FETS: OFF
REG: ON
I²C: ON
CURRENT FAULT : OFF
CELL MONITOR : OFF
WATCHDOG : OFF
SHIP MODE SET BY
STATE CTL REGISTER
b1 = 1 AND NO SUPPLY
POWER TO PACK
THERMISTOR PWER CTRL : OFF
SHIP MODE
FETS: OFF
REG: OFF
I²C: OFF
CURRENT FAULT : OFF
CELL MONITOR : OFF
WATCHDOG : OFF
THERMISTOR PWER CTRL : OFF
SHIP MODE SET BY STATE CTL REGISTER
b1 = 1 AND NO SUPPLY POWER TO PACK
Interrupt Request When
Enrering These States
*1: Interrupt Request is Granted When Only External Sleep Pin Changes
*2: When PMS connect to Pack, Default State of CHG FET is ON.
9