LTC4007-1 Linear Technology, LTC4007-1 Datasheet - Page 10

• Manufacturer Part Number: LTC4007-1
• Description: Li-Ion Battery Charger
• Manufacturer: Linear Technology

OPERATIO
LTC4007-1
Table 1. Truth Table for LTC4007-1 Operation (Supplemental)
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
*Most probable condition
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”.
10
CONDITION,
CONDITION CONDITION Input Current Limited
CONDITION CONDITION Conditioning a
CONDITION CONDITION Timer Defeated (Low
CONDITION
CONDITION
CONDITION
CONDITION
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
STATE
FROM
MSD
Any
SD,
SD
U
CONDITION Start Conditioning a
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
CHARGE
STATE
MSD
TO
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
MODE
Shut Down by Low
Adapter Voltage
Charger Shutdown
Shut Down by
Undervoltage Lockout
Depleted Battery
Condition Charging
Depleted Battery
Battery Conditioning
Still Functional)
Charger Paused Due to
Thermistor Out of Range
CONDITION Mode
Shut Down by
ACP/SHDN Pin
Start Normal Charging
Timer Defeated (Low
Battery Conditioning
Still Functional)
Top-Off Charging
C/10 Latch is SET
when Battery Current
Is Less than 10% of
Programmed Current
Top-Off Charging
Input Current
Limited Charging
Charger Paused Due to
Thermistor Out of Range
Shut Down by
ACP/SHDN Pin
Terminated by Low-
Battery Fault (Note 1)
Terminates After T/4
Terminates After T
Timeout in
<BAT
>BAT
>BAT
<UVL
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT <3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT >3.25V/Cell
>BAT <3.25V/Cell
>BAT
>BAT
DCIN
and
VOLTAGE
BATTERY
V
V
FLOAT
FLOAT
*
Note 3: Blank fields indicate no change, not considered, or other states impact
value.
Note 4: Battery voltage thresholds do not include comparator hysterisis.
Thresholds specify the VLH value.
PRESENT NEXT
LATCH
C/10
0
1
1
0
LATCH
C/10
0
0
0
1
0
0
Current (Note 2)
Current (Note 2)
<Programmed
Programmed
Programmed
Programmed
Programmed
Programmed
Programmed
Programmed
Programmed
Programmed
CURRENT
BATTERY
Current
Current
Current
Current
Current
Current
Current
Current
<10%
MAX
10%
10%
10%
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
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Forced
Forced
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
LOW
LOW
ACP
>T/4 then
>T/4 then
Running
Running
Running
Running
Running
Ignored
Ignored
>T then
Paused
Paused
TIMER
STATE
Reset
Reset
Reset
Reset
Reset
Reset
Reset
Reset
Reset
>T/4
(Faulted)
(Faulted)
(Faulted)
(Faulted)
LOW or
Forced
Forced
HIGH*
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
25µA
25µA
25µA
CHG
LOW
40071f