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LTC4006 Datasheet(PDF) 10 Page - Linear Technology

Part # LTC4006
Description  4A, High Efficiency, Standalone Li-Ion Battery Charger
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4006 Datasheet(HTML) 10 Page - Linear Technology

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10
LTC4006
4006fa
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
25
µA
Than 10% of Programmed Current
Current
16
CHARGE
CHARGE
Top-Off Charging
>BAT
>3.9V/Cell
1
Programmed
HIGH
Running
25
µA
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 25
µA
(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.
Note 2: See section on “Adapter Limiting”.
Note 3: The information contained in this table is supplemental to the
LTC4006 data sheet and has not been production qualified.
Note 4: Blank fields indicate no change, not considered, or other states
impact value.
*Open Drain. High when used with pull-up resistor.
** Most probable condition.
MASTER
SHUTDOWN
1
2
ANY
SHUTDOWN
4
CONDITION
11
13
3, 18, 19,
20, 21, 22
3, 8,
9, 10
5,
6,
7
CHARGE
12, 14, 15, 16, 17
4006 F15
LTC4006: State Diagram (Supplemental)


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