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参数资料
| 型号： | LTC4063EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/20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
POWER ON
BAT < 2.9V
TRICKLE CHARGE MODE
1/10 FULL CURRENT
CHRG STATE: PULL-DOWN
BAT > 2.9V
CHARGE MODE
FULL CURRENT
CHGEN = 0V
OR UVLO
CONDITION
STOPS
SHUTDOWN MODE
I CC DROPS TO 35μA
CHRG STATE: Hi-Z
CHRG STATE:
2.9V < BAT PULL-DOWN IF I BAT > I DETECT
Hi-Z IF I BAT < I DETECT
4063 F05
CHGEN = 5V
OR
UVLO CONDITION
Figure 5. State Diagram of a Charger Cycle Using User Termination
+
R PROG
+
R PROG
R PROG =
, I CHG =
WithUser-SelectableChargeTermination,theSmartStart
feature is disabled; when the charger is powered on or
enabled, the LTC4063 automatically begins charging, re-
gardless of the battery voltage. Figure 5 describes charger
operation when User-Selectable Charge Termination is
used.
Programming C/10 Current Detection/Termination
In most cases, an external resistor, R DET , is needed to set
the charge current detection threshold, I DETECT . However,
when setting I DETECT to be 1/10th of I CHG , the IDET pin
500mA
V IN V CC BAT
LTC4063
PROG
IDET TIMER
2k R DET GND
2k
500mA
V IN V CC BAT
LTC4063
PROG
IDET TIMER
1k GND
4063 F06
Figure 6. Two Circuits that Charge at 500mA
Full-Scale Current and Terminate at 50mA
can be connected directly to the PROG pin. This reduces
the component count, as shown in Figure 6.
When PROG and IDET are connected in this way, the
full-scale charge current, I CHG , is programmed using a
different equation:
500 V 500 V
I CHG R PROG
Stability Considerations
The battery charger constant voltage mode feedback loop
is stable without any compensation provided a battery
is connected. However, a 1μF capacitor with a 1Ω series
resistor to GND is recommended at the BAT pin to keep
ripple voltage low when the battery is disconnected.
When the charger is in constant current mode, the PROG
pin is in the feedback loop, not the battery. The constant
current stability is affected by the impedance at the PROG
pin. With no additional capacitance on the PROG pin, the
charger is stable with program resistor values as high as
10k; however, additional capacitance on this node reduces
the maximum allowed program resistor.
For the LDO regulator, a capacitor (C OUT ) must be connected
from OUT to GND to ensure regulator loop stability. It is
recommended that low ESR capacitors be used for C OUT
to reduce noise on the output of the linear regulator. C OUT
must be ≥2μF for best performance.
4063fc
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相关代理商/技术参数 |
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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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