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参数资料
| 型号： | LTC4078EDD-2#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC USB POWER MANAGER 10-DFN |
| 标准包装： | 2,500 |
| 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： | 4.3 V ~ 5.5 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) |
LTC4078/LTC4078X
OPERATION
This output is strong enough to drive an LED. If no valid
voltage is applied at either pin, the PWR pin is high im-
pedance, indicating that the LTC4078/LTC4078X lack valid
input voltage (see Table 1) to charge the battery.
Thermal Limiting
An internal thermal feedback loop reduces the programmed
charge current if the die temperature attempts to rise above
a preset value of approximately 120°C. This feature protects
the LTC4078/LTC4078X from excessive temperature and
allows the user to push the limits of the power handling
capability of a given circuit board without risk of damag-
ing the device. The charge current can be set according
to typical (not worst-case) ambient temperature with the
assurance that the charger will automatically reduce the
current in worst case conditions. DFN package power
considerations are discussed further in the Applications
Information section.
DCIN POWER REMOVED
NO POWER
USB POWER REMOVED
POWER APPLIED
ENABLE = LOW
YES
ENABLE = HIGH
DCIN > 4.15V
AND DCIN > BAT
NO
6V > DCIN > 4.15V
NO
NO
6V > USBIN > 3.95V
AND DCIN > BAT
YES
BATDET < 1.75V
YES
FULL CURRENT (BAT > 2.9V)
1/10TH FULL CURRENT
(BAT < 2.9V)*
CHRG STATE: PULLDOWN
I BAT < I TERMINATE
IN VOLTAGE MODE
STANDBY MODE
(DCIN)
BAT < 4.075V
NO CHARGE CURRENT
CHRG STATE: Hi-Z
SHUTDOWN MODE
(DCIN)
CHRG STATE: Hi-Z
*LTC4078 ONLY
NO
NO
AND USBIN > BAT
YES
BATDET < 1.75V
YES
FULL CURRENT (BAT > 2.9V)
1/10TH FULL CURRENT
(BAT < 2.9V)*
CHRG STATE: PULLDOWN
I BAT < I TERMINATE
IN VOLTAGE MODE
STANDBY MODE
(USBIN)
BAT < 4.075V
NO CHARGE CURRENT
CHRG STATE: Hi-Z
SHUTDOWN MODE
(USBIN)
CHRG STATE: Hi-Z
4078X F01
Figure 1. LTC4078 State Diagram of a Charge Cycle
4078xfb
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4078X | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Li-Ion Battery Charger with Overvoltage Protection |
| LTC4078XEDD#PBF | 功能描述:IC USB POWER MANAGER 12-DFN 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 |
| LTC4078XEDD#TRPBF | 功能描述:IC USB POWER MANAGER 12-DFN 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 |
| LTC4078XEDD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Li-Ion Battery Charger with Overvoltage Protection |
| LTC4078XEDD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Li-Ion Battery Charger with Overvoltage Protection |
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