LTC4110EUHF LINER [Linear Technology], LTC4110EUHF Datasheet - Page 17

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

OPERATION
Note: V
10
11
12
13
14
#
1
2
3
4
5
6
7
8
9
Logic Event (T = True, F = False) [Notes]
CHG
Or
Or
Or
Or
Or
Or
Or
Or
Or
CHARGE
11
is active in all charge states except for nickel batteries which operate in constant current mode.
STATE
8
ANY
RES_OR = F & DCDIV pin = T & SHDN pin = F &
CHARGE_INHIBITED = F & CHG_FLT = F & RES_HOT = F
RES_OR = F & DCDIV pin = T & SHDN pin = F &
CHARGE_INHIBITED = F & CHG_FLT = F & RES_HOT = T &
RES_UR = T
ChargingVoltage() & ChargingCurrent() ≠ 0 sent
V
ChargingVoltage() or ChargingCurrent() = 0 sent
Timer/4(Pre-Charge) = Done before V
ChargingVoltage() & ChargingCurrent() ≠ 0 sent & RES_OR = F
& DCDIV pin = T & SHDN pin = F & CHARGE_INHIBITED = F &
CHG_FLT = F
TTIMEOUT = Done (Dead Battery or Loss of SMBus)
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
V
RESET_TO_ZERO = T [See ChargeMode()]
CHARGE_INHIBIT = T [See ChargeMode()]
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
BAT
UVD
BOV
BOV
> V
= T [Battery Overvoltage]
= F
= T
BC
(OVERTEMPERATURE)
(BATTERY OVP)
STOPPED
PWM
OFF
Figure 4. Smart Battery Charge State Diagram (Does Not Include Calibration)
CURRENT
RESUME
STATE
BAT
12
9
> V
BC
PRE-CONDITIONING
WAKE UP
CHARGE
CHARGE
2
Notes and/or Actions (T = True, F = False)
I
Timer/4(Pre-Charge) = Started & TTIMEOUT disabled & ALARM_
INHIBITED = F
I
= Started
I
I
I
ALARM_INHIBITED = F
I
I
I
I
ALARM_INHIBITED = F & CHARGE_INHIBITED = F
PWM stopped. Timers remain running.
PWM restarted.
I
I
ALARM_INHIBITED = T
(ALARM_INHIBITED bit is found in ChargeStatus())
PPC
PPC
CHG
PPC
PPC
CHG
CHG
CHG
CHG
CHG
CHG
= On (Constant Current only) & TTIMEOUT = Started & CHG = T
= Off, I
= Off & All Timers = Reset & CHG = F
= On & Timer/4(Pre-Charge) = Started & CHG = T &
= Off & All Timers = Reset & CHG = F
= Off & All Timers Reset & CHG = F
or I
or I
or I
or I
or I
PPC
PPC
PPC
PPC
PPC
1
3
6 (BATTERY RECHARGE REQUEST)
CHG
= Off & CHG_FLT = T, Timer = Paused.
= On & CHG_FLT = F , Timer = Resume.
= Off & All Timers = Reset & CHG_FLT = F & CHG = F &
= Off & All Timers = Reset & CHG_FLT = F & CHG = F
= Off. & All Timers = Reset & CHG = F &
= On, Timer/4(Pre-Charge) = Stopped & Timer(SMBus)
5 (BAD BATTERY)
CHARGE
RESET
BULK
(BATTERY
FULL)
10
4
LTC4110
CHARGE
STATE
ANY
OFF
4, 7, 13, 14
17
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