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参数资料
| 型号： | LTC4075EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC CHARG BATT LI-ON USB 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) |
LTC4075/LTC4075X
PI FU CTIO S
USBIN (Pin 1): USB Input Supply Pin. Provides power to
the battery charger. The maximum supply current is 650mA.
This pin should be bypassed with a 1μF capacitor.
IUSB (Pin 2): Charge Current Program for USB Power.
The charge current is set by connecting a resistor, R IUSB ,
to ground. When charging in constant-current mode, this
pin servos to 1V. The voltage on this pin can be used to
measure the battery current delivered from the USB input
using the following formula:
is capable of sinking up to 10mA, making it suitable for
driving an LED.
ENABLE (Pin 6): Enable Input. When the LTC4075 is
charging from the DCIN source, a logic low on this pin
enables the charger. When the LTC4075 is charging from
the USBIN source, a logic high on this pin enables the
charger. If this input is left ?oating, an internal 2M Ω
pulldown resistor defaults the LTC4075 to charge when
a wall adapter is applied and to shut down if only the USB
source is applied.
I BAT =
V IUSB
R IUSB
?1000
USBPWR (Pin 7): Open-Drain USB Power Status Output.
When the voltage on the USBIN pin is suf?cient to begin
charging and there is insuf?cient power at DCIN, the USB-
ITERM (Pin 3): Termination Current Threshold Program.
The termination current threshold, I TERMINATE , is set by
connecting a resistor, R ITERM , to ground. I TERMINATE is set
by the following formula:
PWR pin is high impedance. In all other cases, this pin is
pulled low by an internal N-channel MOSFET, provided that
there is power present at the DCIN, USBIN, or BAT inputs.
This output is capable of sinking up to 1mA, making it
suitable for driving high impedance logic inputs.
I TERMINATE =
100 V
R ITERM
IDC (Pin 8): Charge Current Program for Wall Adapter
Power. The charge current is set by connecting a resis-
tor, R IDC , to ground. When charging in constant-current
When the battery current, I BAT , falls below the termination
threshold, charging stops and the ? C ? H ? R ? G output becomes
high impedance.
mode, this pin servos to 1V. The voltage on this pin can
be used to measure the battery current delivered from the
DC input using the following formula:
This pin is internally clamped to approximately 1.5V. Driving
this pin to voltages beyond the clamp voltage can draw
large currents and should be avoided.
I BAT =
V IDC
R IDC
?1000
? P ? W ? R (Pin 4): Open-Drain Power Supply Status Output.
When the DCIN or USBIN pin voltage is suf?cient to begin
charging (i.e. when the supply is greater than the under-
voltage lockout threshold and at least 180mV above the
battery terminal), the ? P ? W ? R pin is pulled low by an internal
N-channel MOSFET. Otherwise ? P ? W ? R is high impedance.
This output is capable of sinking up to 10mA, making it
suitable for driving an LED.
? C H ? ? R ? G (Pin 5): Open-Drain Charge Status Output. When
the LTC4075 is charging, the ? C ? H ? R ? G pin is pulled low by
an internal N-channel MOSFET. When the charge cycle is
completed, ? C ? H ? R ? G becomes high impedance. This output
BAT (Pin 9): Charger Output and Regulator Input. This pin
provides charge current to the battery and regulates the
?nal ?oat voltage to 4.2V.
DCIN (Pin 10): Wall Adapter Input Supply Pin. Provides
power to the battery charger. The maximum supply
current is 950mA. This should be bypassed with a 1 μ F
capacitor.
Exposed Pad (Pin 11): GND. The exposed backside of the
package is ground and must be soldered to PC board ground
for electrical connection and maximum heat transfer.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4075HVX | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage Dual Input Li-Ion/Polymer Battery Charger |
| LTC4075HVXEDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage Dual Input Li-Ion/Polymer Battery Charger |
| LTC4075HVXEDD#PBF | 功能描述:IC CHARGER LI-ION 10-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 |
| LTC4075HVXEDD#PBF | 制造商:Linear Technology 功能描述:BATT CHARGER LI ON DUAL 10DFN 制造商:Linear Technology 功能描述:BATT CHARGER, LI ON, DUAL, 10DFN |
| LTC4075HVXEDD#TRPBF | 功能描述:IC CHARGER LI-ION 10-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 |
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