Datasheet LTC4006 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 4A, High Efficiency, Standalone Li-Ion Battery Charger |
| Pages / Page | 20 / 10 — OPERATIO. Table 2. Truth Table for LTC4006 Operation (Supplemental). … |
| File Format / Size | PDF / 273 Kb |
| Document Language | English |
OPERATIO. Table 2. Truth Table for LTC4006 Operation (Supplemental). FROM. BAT. PRESENT C/10. NEXT C/10. MAX BAT. TIMER. NUMBER. STATE
Model Line for this Datasheet
Text Version of Document
LTC4006
U OPERATIO Table 2. Truth Table for LTC4006 Operation (Supplemental) FROM TO BAT PRESENT C/10 NEXT C/10 MAX BAT TIMER NUMBER STATE STATE MODE DCIN VOLTAGE LATCH LATCH CURRENT ACP/SHDN STATE CHG*
1 Any MSD Shut Down by Low Adapter Voltage <BAT 0 OFF LOW Reset HIGH 2 MSD SD Charge Shutdown >BAT 0 OFF HIGH Reset HIGH 3 SD, SD Shut Down by Undervoltage Lockout >BAT OFF HIGH Reset HIGH** CONDITION, and CHARGE <UVL 4 SD CONDITION Start Conditioning a Depleted Battery >BAT <2.5V/Cell 10% Programmed HIGH LOW Current 5 CONDITION CONDITION Input Current Limited Condition Charging >BAT <2.5V/Cell <10% Programmed HIGH Running LOW Current (Note 2) 6 CONDITION CONDITION Conditioning a Depleted Battery >BAT <2.5V/Cell 10% Programmed HIGH Running LOW Current 7 CONDITION CONDITION Timer Defeated. (Low-Battery Conditioning Still >BAT <2.5V/Cell 10% Programmed HIGH Ignored Forced LOW Functional) Current 8 CONDITION SD Charger Paused Due to Thermistor Out of Range >BAT <2.5V/Cell OFF HIGH Paused LOW (Faulted) 9 CONDITION SD Timeout in CONDITION Mode >BAT <2.5V/Cell OFF HIGH >T/4 HIGH (Faulted) 10 CONDITION SD Shut Down by ACP/SHDN Pin >BAT <2.5V/Cell 0 OFF Forced LOW Reset HIGH 11 CONDITION CHARGE Start Normal Charging >BAT >2.5V/Cell Programmed HIGH Running Current 12 CHARGE CHARGE Timer Defeated. (Low-Battery Conditioning Still >BAT >2.5V/Cell Programmed HIGH Ignored Forced LOW Functional) Current 13 SD CHARGE Restart >BAT 2.5V ≤ VBAT ≤ 3.9V 0 Programmed HIGH Reset (V/Cell) Current 14 CHARGE CHARGE Top-Off Charging >BAT >3.9V/Cell 0 Programmed HIGH Running LOW Current 15 CHARGE CHARGE C/10 Latch is SET when Battery Current is Less >BAT >2.5V/Cell 1 Programmed HIGH Reset 25µA Than 10% of Programmed Current Current 16 CHARGE CHARGE Top-Off Charging >BAT >3.9V/Cell 1 Programmed HIGH Running 25µA Current 17 CHARGE CHARGE Input Current Limited Charging >BAT >2.5V/Cell <Programmed HIGH Current (Note 2) 18 CHARGE SD Charger Paused Due to Thermistor Out of Range >BAT >2.5V/Cell OFF HIGH Paused LOW or 25µA (Faulted) 19 CHARGE SD Shut Down by ACP/SHDN Pin >BAT >2.5V/Cell 0 OFF Forced LOW Reset HIGH 20 CHARGE SD Terminated by Low-Battery Fault (Note 1) >BAT <2.5V/Cell 0 OFF HIGH >T/4 then Reset HIGH (Faulted) 21 CHARGE SD Terminates After 1/4 T >BAT VFLOAT 1 OFF HIGH >T/4 then Reset HIGH 22 CHARGE SD Terminates After T >BAT VFLOAT** 0 OFF HIGH >T/4 then Reset HIGH
Note 1:
If a depleted battery is inserted while the charger is in this state, the charger must be reset to initiate charging.
LTC4006: State Diagram (Supplemental) Note 2:
See section on “Adapter Limiting”.
Note 3:
The information contained in this table is supplemental to the MASTER 1 ANY LTC4006 data sheet and has not been production qualified. SHUTDOWN
Note 4:
Blank fields indicate no change, not considered, or other states 2 impact value. *Open Drain. High when used with pull-up resistor. SHUTDOWN ** Most probable condition. 4 3, 8, 9, 10 5, 3, 18, 19, 13 6, CONDITION 20, 21, 22 7 11 CHARGE 12, 14, 15, 16, 17 4006 F15 4006fa 10
U OPERATIO Table 2. Truth Table for LTC4006 Operation (Supplemental) FROM TO BAT PRESENT C/10 NEXT C/10 MAX BAT TIMER NUMBER STATE STATE MODE DCIN VOLTAGE LATCH LATCH CURRENT ACP/SHDN STATE CHG*
1 Any MSD Shut Down by Low Adapter Voltage <BAT 0 OFF LOW Reset HIGH 2 MSD SD Charge Shutdown >BAT 0 OFF HIGH Reset HIGH 3 SD, SD Shut Down by Undervoltage Lockout >BAT OFF HIGH Reset HIGH** CONDITION, and CHARGE <UVL 4 SD CONDITION Start Conditioning a Depleted Battery >BAT <2.5V/Cell 10% Programmed HIGH LOW Current 5 CONDITION CONDITION Input Current Limited Condition Charging >BAT <2.5V/Cell <10% Programmed HIGH Running LOW Current (Note 2) 6 CONDITION CONDITION Conditioning a Depleted Battery >BAT <2.5V/Cell 10% Programmed HIGH Running LOW Current 7 CONDITION CONDITION Timer Defeated. (Low-Battery Conditioning Still >BAT <2.5V/Cell 10% Programmed HIGH Ignored Forced LOW Functional) Current 8 CONDITION SD Charger Paused Due to Thermistor Out of Range >BAT <2.5V/Cell OFF HIGH Paused LOW (Faulted) 9 CONDITION SD Timeout in CONDITION Mode >BAT <2.5V/Cell OFF HIGH >T/4 HIGH (Faulted) 10 CONDITION SD Shut Down by ACP/SHDN Pin >BAT <2.5V/Cell 0 OFF Forced LOW Reset HIGH 11 CONDITION CHARGE Start Normal Charging >BAT >2.5V/Cell Programmed HIGH Running Current 12 CHARGE CHARGE Timer Defeated. (Low-Battery Conditioning Still >BAT >2.5V/Cell Programmed HIGH Ignored Forced LOW Functional) Current 13 SD CHARGE Restart >BAT 2.5V ≤ VBAT ≤ 3.9V 0 Programmed HIGH Reset (V/Cell) Current 14 CHARGE CHARGE Top-Off Charging >BAT >3.9V/Cell 0 Programmed HIGH Running LOW Current 15 CHARGE CHARGE C/10 Latch is SET when Battery Current is Less >BAT >2.5V/Cell 1 Programmed HIGH Reset 25µA Than 10% of Programmed Current Current 16 CHARGE CHARGE Top-Off Charging >BAT >3.9V/Cell 1 Programmed HIGH Running 25µA Current 17 CHARGE CHARGE Input Current Limited Charging >BAT >2.5V/Cell <Programmed HIGH Current (Note 2) 18 CHARGE SD Charger Paused Due to Thermistor Out of Range >BAT >2.5V/Cell OFF HIGH Paused LOW or 25µA (Faulted) 19 CHARGE SD Shut Down by ACP/SHDN Pin >BAT >2.5V/Cell 0 OFF Forced LOW Reset HIGH 20 CHARGE SD Terminated by Low-Battery Fault (Note 1) >BAT <2.5V/Cell 0 OFF HIGH >T/4 then Reset HIGH (Faulted) 21 CHARGE SD Terminates After 1/4 T >BAT VFLOAT 1 OFF HIGH >T/4 then Reset HIGH 22 CHARGE SD Terminates After T >BAT VFLOAT** 0 OFF HIGH >T/4 then Reset HIGH
Note 1:
If a depleted battery is inserted while the charger is in this state, the charger must be reset to initiate charging.
LTC4006: State Diagram (Supplemental) Note 2:
See section on “Adapter Limiting”.
Note 3:
The information contained in this table is supplemental to the MASTER 1 ANY LTC4006 data sheet and has not been production qualified. SHUTDOWN
Note 4:
Blank fields indicate no change, not considered, or other states 2 impact value. *Open Drain. High when used with pull-up resistor. SHUTDOWN ** Most probable condition. 4 3, 8, 9, 10 5, 3, 18, 19, 13 6, CONDITION 20, 21, 22 7 11 CHARGE 12, 14, 15, 16, 17 4006 F15 4006fa 10
