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参数资料
| 型号： | LTC4076EDD#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) |
LTC4076
PI FU CTIO S
I BAT =
V IUSB
R IUSB
= IUSB ? 200 ( HPWR = LOW )
I BAT
I TERMINATE =
I BAT =
V IDC
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:
? 1000 ( HPWR = HIGH )
V
R I 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:
100 V
R ITERM
When the battery current, I BAT , falls below the termination
threshold, charging stops and the ? C ? H ? R ? G output becomes
high impedance.
This pin is internally clamped to approximately 1.5V. Driv-
ing this pin to voltages beyond the clamp voltage should
be avoided.
? ?
? 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 LTC4076 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
is capable of sinking up to 10mA, making it suitable for
driving an LED.
? E N ? (Pin 6): Charge Enable Input. A logic low on this pin
enables the charger. If left ?oating, an internal 2M Ω pull-
down resistor defaults the LTC4076 to charge mode . Pull
this pin high for shutdown.
HPWR (Pin 7): HPWR Enable Input. Used to control the
amount of current drawn from the USB port. A logic high
on the HPWR pin sets the charge current to 100% of the
current programmed by the IUSB pin. A logic low on the
HPWR pin sets the charge current to 20% of the current
programmed by the IUSB pin. An internal 2M Ω pull-down
resistor defaults the HPWR pin to its low current state.
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
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:
?1000
R IDC
BAT (Pin 9): Charger Output. 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.
4076fa
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4077 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Charger |
| LTC4077EDD | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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 |
| LTC4077EDD#PBF | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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 |
| LTC4077EDD#TR | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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 |
| LTC4077EDD#TRPBF | 功能描述:IC CHARG BATT LI-ON USB 10DFN 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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