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LTC1759

CONDITION

ACTION

CHARGING_CONTROLLED_STATE = 1 AND THERM_HOT

CHARGING_NONE_STATE = 1

Changes from 0 to 1 AND THERM_UR = 0

The Charger_Controller Stops Charging the Battery. It Cannot

“Wake Up” Charge Again Until Condition 15 Is Met. It Can Supply

“Controlled Charge” to the Battery If Conditions 8 or 9 Are Met

CHARGING_CONTROLLED_STATE = 1 AND THERM_UR

CHARGING_NONE_STATE = 1

Changes from 1 to 0 AND THERM_HOT = 1

The Charger_Controller Stops Charging the Battery. It Cannot

“Wake Up” Charge Again Until Condition 15 Is Met. It Can Supply

“Controlled Charge” to the Battery If Conditions 8 or 9 Are Met

CHARGING_CONTROLLED_STATE = 1

AND INHIBIT_CHARGE Is Set to 1

INHIBIT_CHARGE Asynchronously Inhibits Charging Without

Affecting the Charger_Controller State Machine. This Means the Charger

Stops Charging the Battery but Continues to Accept New

ChargingCurrent() and ChargingVoltage() Commands, Continues to

Monitor the Battery Thermistor Input and Continues to Track the

Communication Time-Out. It Will Resume Charging the Battery If

INHIBIT_CHARGE Is Cleared to 0, Possibly at Different Current and

Voltage If New Commands Have Been Sent in the Interim

ANY STATE

CHARGING_RESET_STATE= 1

The Charger_Controller Is in Any State AND (the Battery Is Removed

The Charger_Controller Is Set to Its Power-On Default State

OR AC_PRESENT = 0 OR a 1 Is Written to POR_RESET)

NOTE:

Condition 15 Takes Precedence Over Any Other Condition.

(CHARGING_CONTROLLED_STATE = 1) OR

CHARGING_NONE_STATE = 1

CHARGING_WAKE-UP_STATE = 1) AND

The Charger_Controller Stops Charging the Battery. It Cannot

A 1 Is Written to RESET_TO_ZERO

“Wake Up” Charge Again Until Condition 15 Is Met. It Can Supply

“Controlled Charge” to the Battery If Conditions 8 or 9 Are Met.

The Valid Charge Command Timer Is Cleared When RESET_TO_ZERO =

1. This Prevents Charging from Continuing Until After a Valid

ChargeCurrent() and ChargeVoltage() Pair Is Received

ANY STATE AND

Alert SMHost of Change by Setting INTB = 0

AC_PRESENT Transitions 0 to 1 or 1 to 0 OR

BATTERY_PRESENT Transitions 0 to 1 or 1 to 0

CHARGING_RESET_STATE = 1

CHGEN = 0

The Charger Is Not Charging

CHARGING _WAKE-UP_STATE = 1

CHGEN = ~INHIBIT_CHARGE

The Charger Will Provide a Wake-Up Current When CHGEN = 1

CHARGING_CONTROLLED_STATE = 1

CHGEN = ~INHIBIT_CHARGE

The Charger Will Provide Specified Charging Voltage and Current

When CHGEN = 1

A Zero Value for ChargingVoltage() Is Handled by Forcing CHGEN = 0

CHARGING_NONE_STATE = 1

CHGEN = 0

The Charger Is Not Charging

OPERATIO

LTC1759 Datasheet(PDF) 18 Page - Linear Technology

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