LTC1759 データシートの表示（PDF） - Linear Technology

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LTC1759

Smart Battery Charger

Linear Technology 

U

OPERATIO

Table 3. Charger_Controller Functional Features

# CONDITION

0 POWER_ON_RESET = 1

1 CHARGING_RESET_STATE = 1 AND the Battery Is Present

AND AC_PRESENT = 1 AND INHIBIT_CHARGE = 0 AND Thermistor Is

Ideal

2 CHARGING_RESET_STATE = 1 AND the Battery Is Present

AND AC_PRESENT =1 AND INHIBIT_CHARGE = 0 AND THERM_

UR = 1 OR THERM_COLD = 1

3 CHARGING_WAKE-UP_STATE = 1 AND the Time-Out Period

Exceeds tTIMEOUT AND THERM_UR = 1 OR THERM_COLD = 1

LTC1759

ACTION

CHARGING_RESET_STATE =1

(Asynchronously Reset the Charger_Controller State Machine During

Power-On Reset)

CHARGING _WAKE-UP_STATE = 1

The Charger_Controller Will “Wake Up” Charge the Battery

at IWAKE-UP Indefinitely

CHARGING_WAKE-UP_STATE = 1

The Charger_Controller Will “Wake Up” Charge the Battery

at IWAKE-UP Until Condition 3 Is Met

CHARGING_NONE_STATE = 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

4 CHARGING_WAKE-UP_STATE = 1 AND an AlarmWarning() Message CHARGING_NONE_STATE =1

Is Received with Any Bit in the Upper Nibble Set

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

5 CHARGING_WAKE-UP_STATE = 1 (from Condition 1 above) AND

THERM_HOT Changes from 0 to 1 AND THERM_UR = 0

CHARGING_NONE_STATE = 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

6 CHARGING_WAKE-UP_STATE = 1 (from Condition 2 above) AND

THERM_UR Changes from 1 to 0 AND THERM_HOT = 1

CHARGING_NONE_STATE = 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

7 CHARGING_WAKE-UP-STATE = 1 AND INHIBIT_CHARGE Is

Set to 1

CHARGING_WAKE-UP_STATE =1

The Charger_Controller Stops Charging the Selected Battery. The Timer

Continues to Run. The Charger Can Resume “Wake-Up” Charging If

INHIBIT_CHARGE = 0

8 (CHARGING_WAKE-UP_STATE = 1 OR CHARGING_NONE_STATE = 1) CHARGING_CONTROLLED_STATE = 1

AND (Both ChargingCurrent() AND ChargingVoltage() Commands

The Charger_Controller Will Supply “Controlled Charge” to the

Are Received within tTIMEOUT) AND INHIBIT_CHARGE = 0

AND THERM_HOT = 0

Battery as Specified in the Current and Voltage Commands

9 (CHARGING_WAKE-UP_STATE = 1 OR CHARGING_NONE_STATE = 1) CHARGING_CONTROLLED_STATE = 1

AND (Both ChargingCurrent() AND ChargingVoltage() Commands

The Charger_Controller Will Supply “Controlled Charge” to the

Are Received within tTIMEOUT) AND INHIBIT_CHARGE = 0

AND THERM_UR = 1

Battery as Specified in the Current and Voltage Commands

10 CHARGING_CONTROLLED_STATE = 1

CHARGING_NONE_STATE = 1

AND No New ChargingCurrent() and ChargingVoltage() Commands Are The Charger_Controller Stops Charging the Battery. It Cannot

Received for a Time-Out Period of tTIMEOUT

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

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

11 CHARGING_CONTROLLED_STATE = 1

The Charger_Controller Is Supplying “Controlled Charge” to the

Battery AND (an AlarmWarning() Message Is Received

with Any Bit in the Upper Nibble Set)

CHARGING_NONE_STATE = 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

17

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