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LTC1759

OPERATIO

POWER-ON

WORD BIT

RESET VALUE

FUNCTION

FIELD

MAPPING

(BINARY)

ALLOWED VALUES

RESET_TO_ZERO

• 0 – Charging Value Unchanged

• 1 – Set Charging Values to Zero

NOTE:

This function is implemented by forcing the charger to

CHARGING_NONE_STATE and not allowing charge to resume until a

valid ChargingCurrent() and ChargingVoltage() Pair Is received.

• Write Only. Read Will NACK

Reserved

15:4

• Not Implemented. Writes to These Bits Are Ignored.

• Write Only. Read Will NACK

ChargerStatus()

CHARGE_INHIBITED

This Is the ChargerMode() INHIBIT_CHARGE Bit

• 0 – Charger Is Enabled

• 1 – Charger Is Inhibited

• Read Only. Write Will NACK

MASTER_MODE

• 0 – Charger Is in Slave Mode (Polling Disabled)

• 1 – Charger Is in Master Mode (Polling Enabled)

• Always Returns 0

• Read Only. Write Will NACK

VOLTAGE_NOTREG

• 0 – Charger’s Output Voltage Is in Regulation

• 1 – Requested ChargingCurrent() Is Not Being Met

• Not Supported; Always Returns 0

• Read Only. Write Will NACK

CURRENT_NOTREG

• 0 – Charger’s Output Current Is in Regulation

• 1 – Requested ChargingCurrent() Is Not Being Met

• Not Supported; Always Returns 0

• Read Only. Write Will NACK

LEVEL_3:LEVEL_2

5:4

• 00 – Reserved

• 01 – Charger Is a Smart Battery Controlled

• 10 – Reserved

• 11 – Charger Is a Host Controlled

• Always Returns 01

• Read Only. Write Will NACK

CURRENT_OR

• 0 – ChargingCurrent() Value Is Valid

• 1 – ChargingCurrent() Value Is Invalid

• This Value Is Valid Only When Charging with

CHARGE_INHIBITED = 0 or 1

• Read Only. Write Will NACK

VOLTAGE_OR

• 0 – ChargingVoltage() Value Is Valid

• 1 – ChargingVoltage() Value Is Invalid

• This Value Is Valid Only When Charging with

CHARGE_INHIBITED = 0 or 1

• Read Only. Write Will NACK

THERM_OR

Value

• 0 – Thermistor Indicates Not Overrange

• 1 – Thermistor Indicates Overrange

• Read Only. Write Will NACK

THERM_COLD

Value

• 0 – Thermistor Indicates Not Cold

• 1 – Thermistor Indicates Cold

• Read Only. Write Will NACK

THERM_HOT

Value

• 0 – Thermistor Indicates Not Hot

• 1 – Thermistor Indicates Hot

• Read Only. Write Will NACK

LTC1759 Datasheet(PDF) 13 Page - Linear Technology

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