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参数资料
| 型号： | LTC4063EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC BATT CHRGR LI-ION LDO 10DFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4.3 V ~ 8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
LTC4063
APPLICATIONS INFORMATION
I DETECT =
? I CHG =
R DET =
Charge Current Termination
Connecting the TIMER pin to ground selects Charge Cur-
rent Termination. With this method, the timer is disabled
and a resistor (R DET ) must be connected from the IDET
pin to ground. I DETECT is programmed using the same
equation stated in the previous section (repeated here
for convenience):
R PROG 100 V
10 R DET R DET
or
100 V
I DE T ECT
Thechargecycleterminateswhenthechargecurrentfalls
below I DETECT . This condition is detected using an internal,
filtered comparator to monitor the IDET pin. When the
IDET pin falls below 100mV for longer than t TERM (typically
1.5ms), charging is terminated.
When charging, transient loads on the BAT pin can cause
the IDET pin to fall below 100mV for short periods of
time before the DC current has dropped below the I DETECT
threshold. The 1.5ms filter time (t TERM ) on the internal
comparator ensures that transient loads of this nature do
not result in premature charge cycle termination. Once the
average charge current drops below I DETECT , the charger
terminates the charge cycle.
The CHRG output is in its pull-down state when charging
and in its high impedance state once charging has stopped.
Figure 4 describes the operation of the LTC4063 charger
when charge current termination is used.
User-Selectable Charge Termination
Connecting the TIMER pin to VCC selects User-Select-
able Charge Termination, in which all internal termination
features are disabled. The charge cycle continues indefi-
nitely until the charger is shut down through the CHGEN
pin. The IDET pin programs the behavior of the CHRG
output in the same manner as when using Charge Time
Termination. Specifically, when the charge current (I BAT )
is greater than I DETECT , the CHRG output is in its pull-down
state. When the charger enters constant-voltage mode
operation and the charge current falls below I DETECT , the
CHRG output becomes high impedance, indicating that
the battery is charged. If the IDET pin is not connected,
the CHRG output remains in its pull-down state until the
charger is shut down.
POWER ON
TRICKLE CHARGE MODE
BAT < 2.9V
2.9V < BAT < 4.1V
BAT < 4.1V
1/10 FULL CURRENT
CHRG STATE: PULL-DOWN
BAT > 2.9V
CHARGE MODE
FULL CURRENT
CHRG STATE: PULL-DOWN
I BAT < I DETECT
IN VOLTAGE MODE
STANDBY MODE
NO CHARGE CURRENT
CHGEN = 0V
OR UVLO
CONDITION
STOPS
SHUTDOWN MODE
I CC DROPS TO 35μA
CHRG STATE: Hi-Z
BAT > 4.1V
CHRG STATE: Hi-Z
4063 F04
CHGEN = 5V
OR
UVLO CONDITION
Figure 4. State Diagram of a Charge Cycle Using Charge Current Termination
4063fc
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| LTC4064 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic Linear Charger for Back-Up Li-Ion Batteries |
| LTC4064EMSE | 功能描述:IC CHARGER BATT L-ION 4V 10-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4064EMSE#PBF | 功能描述:IC CHARGER BATT L-ION 4V 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4064EMSE#TR | 功能描述:IC CHARGER BATT L-ION 4V 10-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4064EMSE#TRPBF | 功能描述:IC CHARGER BATT L-ION 4V 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
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