LTC4110EUHF LINER [Linear Technology], LTC4110EUHF Datasheet - Page 15

• Manufacturer Part Number: LTC4110EUHF
• Description: Battery Backup System Manager
• Manufacturer: LINER [Linear Technology]

OPERATION
Note: For all charge states, V
10
11
12
13
14
15
#
1
2
3
4
5
6
7
8
9
Logic Event (T = True, F = False) [Notes]
Or
Or
Or
Or
Or
Or
Or
Or
Or
Or
CHARGE
14
STATE
8
ANY
RES_OR = F & DCDIV pin = T & SHDN pin = F &
CHARGE_INHIBITED = F & CHG_FLT = F & V
RES_OR = F & DCDIV pin = T & SHDN pin = F &
CHARGE_INHIBITED = F & CHG_FLT=F &
ChargingVoltage() ≠ 0 & ChargingCurrent() ≠ 0
V
C/5 = T
Timer/4(Top Off = done [Battery is full]
Timer/4(PreCond) = done before V
Timer(Bulk) = done before C/5 = T
RESET_TO_ZERO = T [See ChargeMode()]
CHARGE_INHIBIT=T [See ChargeMode()]
RES_HOT = T & RES_UR = F [See ChargeStatus()]
RES_HOT = F [See ChargeStatus()]
DCDIV pin = F
RES_OR = T [Bat Removed, See ChargeStatus()]
SHDN pin = T
V
POR_RESET = T [See ChargeMode()]
V
ChargingVoltage() & ChargingCurrent() ≠ 0
AlarmWarning() command is sent by Smart Battery over
SMBus with any of the following bits set to True:
OVER_CHARGED_ALARM
TERMINATE_CHARGE_ALARM
Reserved ALARM
OVER_TEMPERATURE_ALARM
ChargingVoltage() or ChargingCurrent() = 0 sent
V
V
AR
BAT
UVD
BOV
BOV
= T [AutoRestart]
> V
= T [Battery Overvoltage]
= F
= T
(OVERTEMPERATURE)
BC
(BATTERY OVP)
STOPPED
CHARGE
CHG
STOP
PWM
Figure 3. Standard Li-Ion Charge State Diagram (Does Not Include Calibration)
is always active.
RESUME
CHARGE
STATE
BAT
15
9
> V
BC
BAT
< V
BC
PRE-CONDITIONING
CHARGE
RESET
1
Timer(Bulk) = Stopped & Timer/4(Top Off) = Started
F & CHG = F & CHARGE_INHIBITED = F
(The battery needs another charge cycle or Smart Battery has requested to
start another cycle.)
(ALARM_INHIBITED bit is found in ChargeStatus())
PWM restarted.
Notes and/or Actions (T = True, F = False)
(RES_OR = F = Bat Inserted -> See ChargeStatus() )
(POR_RESET -> See ChargeMode()
I
I
I
I
I
I
I
I
I
I
PWM stopped. Timers remain running.
I
PPC
CHG
PPC
CHG
CHG
CHG
CHG
CHG
CHG
CHG
PPC
= Off & I
= Off & CHG_FLT = T & CHG = F
= Off & CHG = F (Typical Full State)
= Off & CHG_FLT = T & CHG = F
or IPPC = Off & All Timers = Reset & CHG_FLT = F & CHG = F
or I
or I
or I
or I
or I
& Timer/4(PreCond) = Started & CHG = T & ALARM_INHIBITED = F
2
PPC
PPC
PPC
PPC
PPC
= Off & CHG_FLT = T, Timers paused.
= On & CHG_FLT = F , Timers resume.
= Off & All Timers = Reset & ALARM_INHIBITED = F & CHG_FLT =
= Off & All Timers = Reset & CHG = F & ALARM_INHIBITED = T
= Off & CHG = F
CHG
10
5 (PRE-CONDITIONING FAULT)
= On & Timer/4(PreCond) = Stopped & Timer(Bulk) = Started.
CHARGE
CHARGE
6 (BULK TIME FAULT)
STATE
BULK
ANY
11 (BATTERY NEEDS RECHARGE)
3
7, 12, 13
LTC4110
TOP-OFF
CHARGE
CHARGE
STOP
4 (BATTERY FULL)
15
4110 F03
4110fa