- 您现在的位置：买卖IC网 > PDF目录16023 > LTC4055EUF (Linear Technology)IC USB PWR MNGR BATT CHRGR 16QFN PDF资料下载
参数资料
| 型号： | LTC4055EUF |
| 厂商： | Linear Technology |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC USB PWR MNGR BATT CHRGR 16QFN |
| 标准包装： | 91 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 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： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 管件 |
LTC4055/LTC4055-1
OPERATION
The LTC4055/LTC4055-1are complete PowerPath control-
lers for battery-powered USB applications. The LTC4055/
LTC4055-1 are designed to provide device power and Li-ion
battery charging from the USB V BUS while maintaining
the current limits as speci?ed in the USB speci?cation.
This is accomplished by reducing battery charge current
as output/load current is increased. In this scenario, the
available bus current is maximized in an effort to minimize
battery charge time.
An ideal diode function provides power from the battery
when output/load current exceeds the input current limit
set for the part or when input power is removed. The
advantage to powering the load through the ideal diode
(rather than connecting the load directly to the battery)
is that when the bus is connected and the battery is fully
charged, the battery remains fully charged until bus power
is removed. Once bus power is removed the output drops
until the ideal diode is forward biased. The forward biased
ideal diode will then provide the output power to the load
from the battery.
WALL
ADAPTER
Another advantage to powering the load from the bus when
the bus is available is in cases where the load is a switching
regulator. The input power to a switching regulator can be
thought of as constant. A higher voltage across a constant
power load will require less current. Less load current in
USB applications means more available charge current.
More charge current translates to shorter charge times.
The LTC4055/LTC4055-1 also have the ability to
accommodate power from a wall adapter. Wall adapter
power can be connected to the output (load side) of the
LTC4055/LTC4055-1 through an external device such as a
power Schottky or FET, as shown in Figure 1. The LTC4055/
LTC4055-1 have the unique ability to use the output, which
is powered by the wall adapter, as an alternate path to
charge the battery while providing power to the load. A
wall adapter comparator on the LTC4055/LTC4055-1 can
be con?gured to detect the presence of the wall adapter
and shut off the connection to the USB to prevent reverse
conduction out to the bus.
V BUS
4
1
IN1
IN2
INPUT CHARGER
CONTROL
ENABLE
CURRENT LIMIT
CONTROL
ENABLE
OUTPUT CHARGER
CONTROL
ENABLE
OUT
IDEAL
3
LOAD
BAT
2
5
WALL
1V
+
–
UVLO
+
Li-Ion
4055 F01
Figure 1. Simpli?ed Block Diagram—PowerPath
4055fb
11
相关PDF资料 |
PDF描述 |
|---|---|
| M3EEK-3418R | IDC CABLE - MCE34K/MC34M/MCE34K |
| RP10-1205SE/M1-HC | CONV DC/DC 10W 9-18VIN 05VOUT |
| 415-0016-024 | CABLE MCX/MCX-JACK 24" RG-316 |
| M1MXK-5036J | IDC CABLE - MCG50K/MC50G/X |
| M1MXK-2636R | IDC CABLE - MCG26K/MC26M/X |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4055EUF#PBF | 功能描述:IC USB PWR MNGR BATT CHRGR 16QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC4055EUF#TR | 功能描述:IC USB PWR MNGR BATT CHRGR 16QFN 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 |
| LTC4055EUF#TRPBF | 功能描述:IC USB PWR MNGR BATT CHRGR 16QFN 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 |
| LTC4055EUF-1#PBF | 功能描述:IC USB PWR MNGR BATT CHRGR 16QFN 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 |
| LTC4055EUF-1#TRPBF | 功能描述:IC USB PWR MNGR BATT CHRGR 16QFN 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 |
发布紧急采购，3分钟左右您将得到回复。