ltc1759cg-trpbf Linear Technology Corporation, ltc1759cg-trpbf Datasheet - Page 14

• Manufacturer Part Number: ltc1759cg-trpbf
• Description: Smart Battery Charger
• Manufacturer: Linear Technology Corporation

LTC1759
OPERATIO
14
FUNCTION
ChargingCurrent()
ChargingVoltage()
AlarmWarning()
TERMINATE_CHARGE_
CHARGING_CURRENT
CHARGING_VOLTAGE
OVER_TEMP_ALARM
U
RESERVED_ALARM1
BATTERY_PRESENT
ALARM_INHIBITED
OVER_CHARGED_
POWER_FAIL
AC_PRESENT
THERM_UR
ALARM
ALARM
[15:0]
[15:0]
FIELD
WORD BIT
MAPPING
15:0
15:0
11
12
13
14
15
15
14
13
12
RESET VALUE
POWER-ON
(BINARY)
Value
Value
Value
Value
0
0
0
0
0
0
0
ALLOWED VALUES
• 0 – Thermistor Indicates Not Underrange
• 1 – Thermistor Indicates Underrange
• Read Only. Write Will NACK
• 0 – Charger Not Alarm Inhibited
• 1 – Charger Alarm Inhibited. This Bit Is Set but Never Cleared by
• Read Only. Write Will NACK
• Cleared to Power-On Reset Value When:
• 0 – V
• 1 – V
• Read Only. Write Will NACK
• 0 – Battery Is Not Present
• 1 – Battery Is Present
• Read Only. Write Will NACK
• 0 – Charge Power Is Not Available
• 1 – Charge Power Is Available
• Read Only. Write Will NACK
• Unsigned Integer Representing Charger Current in mA
• Three Possible Responses
• Write Only. Read Will NACK
• Unsigned Integer Representing Charger Voltage in mV
• Three Possible Responses
• Write Only. Read Will NACK
• 1 – Terminate Charging Immediately
• Write Only. Read Will NACK
• Writing a 0 to This Bit Will Be Ignored
• 1 – Terminate Charging Immediately
• Write Only. Read Will NACK
• Writing a 0 to This Bit Will Be Ignored.
• 1 – Terminate Charging Immediately
• Write Only. Read Will NACK
• Writing a 0 to This Bit Will Be Ignored.
• 1 – Terminate Charging Immediately
• Write Only. Read Will NACK
• Writing a 0 to This Bit Will Be Ignored.
AlarmWarning()
1) POR_RESET = 1
2) BATTERY_PRESENT = 0
3) AC_PRESENT = 0
4) A Valid ChargingVoltage(), ChargingCurrent() Pair Is Received
– Supply the Current Requested
– Supply Its Programmatic Maximum Current If the Request Is
– Supply Its Maximum Safe Current If the Request Is hffff [Supply
– Supply the Voltage Requested
– Supply Its Programmatic Maximum Voltage If the Request Is
– Supply Its Maximum Voltage If the Request Is hffff [Supply
Greater Than Its Programmatic Value and Less Than hffff
Current Required to Meet ChargingVoltage()].
Greater Than Its Programmatic Value and Less Than hffff
Voltage Required to Meet ChargingCurrent()].
BAT
BAT
/V
/V
DCIN
DCIN
< 0.9
> 0.9