ltc1760 Linear Technology Corporation, ltc1760 Datasheet - Page 12

• Manufacturer Part Number: ltc1760
• Description: Dual Smart Battery System Manager
• Manufacturer: Linear Technology Corporation

LTC1760
12
1
2
2.1
2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.3.10
2.3.11
2.4
2.5
2.6
3
3.1
3.2
3.3
3.4
3.5
3.6
4
4.1
4.2
4.3
4.4
5
5.1
5.2
5.3
6
6.1
6.2
6.3
6.4
7
7.1
7.2
8
8.1
8.2
8.3
8.4
9
10
TABLE OF CO TE TS
Overview .............................................................................................................................................................................................. 13
The SMBus Interface ........................................................................................................................................................................... 13
Charging Algorithm Overview .............................................................................................................................................................. 24
System Power Management Algorithm and Battery Calibration .......................................................................................................... 27
Battery Calibration (Conditioning) ....................................................................................................................................................... 28
MODE Pin Operation ............................................................................................................................................................................ 29
Battery Charger Controller ................................................................................................................................................................... 29
PowerPath Controller .......................................................................................................................................................................... 31
The Voltage DAC Block ........................................................................................................................................................................ 32
The Current DAC Block ........................................................................................................................................................................ 32
SMBus Interface Overview ............................................................................................................................................................... 13
Data Bit Definition of Supported SMBus Functions. ......................................................................................................................... 14
Description of Supported SMBus Functions .................................................................................................................................... 16
SMBus Dual Port Operation ............................................................................................................................................................. 21
LTC1760 SMBus Controller Operation ............................................................................................................................................. 22
LTC1760 SMBALERT Operation ...................................................................................................................................................... 24
Wake-Up Charging Initiation ............................................................................................................................................................ 24
Wake-Up Charging Termination ....................................................................................................................................................... 24
Wake-Up Charging Current and Voltage Limits ............................................................................................................................... 25
Controlled Charging Initiation .......................................................................................................................................................... 25
Controlled Charging Termination ..................................................................................................................................................... 25
Controlled Charging Current and Voltage Programming .................................................................................................................. 26
Turning Off System Power ............................................................................................................................................................... 27
Power-By Algorithm When No Battery is Being Calibrated .............................................................................................................. 27
Power-By Algorithm When a Battery is Being Calibrated ................................................................................................................. 27
Power-By Reporting ........................................................................................................................................................................ 27
Selecting a Battery to be Calibrated ................................................................................................................................................. 28
Initiating Calibration of Selected Battery .......................................................................................................................................... 28
Terminating Calibration of Selected Battery ..................................................................................................................................... 28
Stand Alone Charge Indication ......................................................................................................................................................... 29
Hardware Charge Inhibit .................................................................................................................................................................. 29
Charging When SCL and SDA are Low ............................................................................................................................................ 29
Charging With an SMBus Host ........................................................................................................................................................ 29
Charge MUX Switches ..................................................................................................................................................................... 30
Dual Charging .................................................................................................................................................................................. 30
Autonomous PowerPath Switching ................................................................................................................................................. 31
Short-Circuit Protection ................................................................................................................................................................... 31
Emergency Turn-Off ........................................................................................................................................................................ 32
Power-Up Strategy .......................................................................................................................................................................... 32
BatterySystemState() ('h01) ........................................................................................................................................................ 16
BatterySystemStateCont() ('h02) ................................................................................................................................................. 17
BatterySystemInfo() ('h04) .......................................................................................................................................................... 18
LTC() ('h3c) ................................................................................................................................................................................. 19
BatteryMode() ('h03) ................................................................................................................................................................... 19
Voltage() ('h09) ........................................................................................................................................................................... 19
Current() ('h0a) ............................................................................................................................................................................ 20
ChargingCurrent() ('h14) ............................................................................................................................................................. 20
ChargingVoltage() ('h15) ............................................................................................................................................................. 20
AlarmWarning() ('h16) ................................................................................................................................................................ 20
AlertResponse() ........................................................................................................................................................................... 21
U U
(For Operation Section)
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