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参数资料
| 型号： | LTC4110EUHF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 23/52页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY BACKUP MANAGER 38-QFN |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 铅酸，锂离子，锂聚合物，镍镉，镍氢，超级电容器 |
| 电源电压： | 4.5 V ~ 19 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-QFN（5x7） |
| 包装： | 带卷 (TR) |
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LTC4110
OPERATION
4
RESUME
STATE
ANY
STATE
(CALIBRATION
COMPLETED)
CALIBRATION
RUNNING
7
8
(CALIBRATION FAULT)
6, 9
2
3
NO
CALIBRATION
MODE?
RESET
1
CALIBRATION
START
YES
5 (BATTERY IS DEAD)
Figure 7. Calibration State Diagram
4110 F07
#
1
2
3
4
5
6
7
8
Logic Event (T = True, F = False) [Notes]
RES_OR = F & DCDIV pin = T & SHDN pin = F & CAL_FLT = F &
CAL_START = T
RES_OR = F & DCDIV pin = T & SHDN pin = F & CAL_FLT = F &
CAL_START = T
[Calibration Automatically Started]
V BAT < V CAL [Battery has reached Discharge]
V BAT < V CAL [Battery is Discharged]
AlarmWarning() command is sent by Smart Battery over SMBus
with any of the following bits set to True:
OVER_TEMP_ALARM or Reserved ALARM or
TERMINATED_DISCHARGE_ALARM]
CAL_RESET = T
RES_HOT = T & RES_UR = F [See ChargeStatus()]
Or
RES_OR = T [Bat Removed, See ChargeStatus()]
Or
V OVP = T [Output Over-Voltage condition sensed)]
Or
I BDT = T [Output Back Drive Current condition sensed)]
Notes and/or Actions (T = True, F = False)
CAL_COMPLETE = F
(Calibration started while in Reset {Idle or Cold Power-Up})
I CHG or IPPC = Off & All Timers = Reset & CAL_COMPLETE = F
(Calibration was initiated while in any mode other than Reset.)
I CAL = ON & CAL_ON = T
I CAL = Off & CAL_ON = F & CAL_COMPLETE = T
(Normal Calibration Cycle)
CAL_COMPLETE = T
(Battery is already discharged. Cancel Calibration.)
I CAL = Off & CAL_ON = F & ALARM_INHIBITED = T
(ALARM_INHIBITED bit is found in ChargeStatus())
I CAL = Off & CAL_ON = F & CAL_COMPLETE = F & CAL_FLT = F
I CAL = Off & CAL_ON = F & CAL_FLT = T
9
Or
Or
Or
DCDIV pin = F
SHDN pin = T
V UVD = T
POR_RESET = T [See ChargeMode()]
I CAL = Off & CAL_ON = F & ALARM_INHIBITED = F &
CHARGE_INHIBITED = F
REGISTER RESET STATE
The SHDN pin will reset all logic registers when taken high,
but only if DCIN is present as determined by DCDIV > V AC
+ V ACH and DCIN above UVLO. Micropower shutdown
state will not be entered, but the LTC4110 will be idle and
not able to enter charge or calibration modes. If SHDN is
switched low then normal operation will resume.
While in register reset state, charge and calibration modes
are inhibited, and all registers including the backup fault bit
register are set to their default states and the internal timer
is reset. The status pin ACPb is active, but GPIO1, GPIO2
and GPIO3 are reset to their default states. The SMBus is
enabled, however, it is not able to communicate with the
LTC4110. The DCIN to DCOUT PowerPath controller is
functional and the V DD and V REF pin voltages remain.
MICROPOWER SHUTDOWN STATE
If the SHDN pin remains high when DCIN is removed as
detected by the undervoltage lockout UVLO (see V UVD ),
micropower shutdown is entered, battery backup mode is
inhibited and all registers are reset. During this condition,
the level of the SHDN pin is ignored and has no effect.
4110fb
23
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