参数资料
| 型号： | LTC4080EMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/20页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION 10-MSOP |
| 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： | 3.75 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-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 10-MSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
LTC4080
PI FU CTIO S
BAT (Pin 1): Charge Current Output and Buck Regulator
Input. Provides charge current to the battery and regulates
the ?nal ?oat voltage to 4.2V. An internal precision resistor
divider from this pin sets the ?oat voltage and is disconnected
in charger shutdown mode. This pin should be decoupled
with a low ESR capacitor for low-noise buck operation.
V CC (Pin 2): Positive Input Supply Voltage. This pin provides
power to the battery charger. V CC can range from 3.75V
to 5.5V. This pin should be bypassed with at least a 1μF
capacitor. When V CC is less than 32mV above the BAT pin
voltage, the battery charger enters shutdown mode.
E ? N ? _ ? C ? H ? R ? G ? (Pin 3): Enable Input Pin for the Battery Charger.
Pulling this pin above the manual shutdown threshold
(V IH ) puts the LTC4080 charger in shutdown mode, thus
stopping the charge cycle. In battery charger shutdown
mode, the LTC4080 has less than 10μA supply current and
less than 5μA battery drain current if the regulator is not
running. Enable is the default state, but the pin should be
tied to GND if unused.
PROG (Pin 4): Charge Current Program and Charge
Current Monitor Pin. Connecting a 1% resistor, R PROG , to
ground programs the charge current. When charging in
constant-current mode, this pin servos to 1V. In all modes,
the voltage on this pin can be used to measure the charge
current using the following formula:
pin will be pulled to ground; otherwise the pin is high
impedance.
? C ? H ? R ? G (Pin 6): Open-Drain Charge Status Output. The
charge status indicator pin has three states: pulldown,
high impedance state, and pulse at 2Hz. This output can
be used as a logic interface or as an LED driver. When the
battery is being charged, the ? C ? H ? R ? G pin is pulled low by an
internal N-channel MOSFET. When the charge current drops
to 10% of the full-scale current, the ? C ? H ? R ? G pin is forced to
a high impedance state. When the battery voltage remains
below 2.9V for one quarter of the full charge time, the
battery is considered defective, and the ? C ? H ? R ? G pin pulses
at a frequency of 2Hz with 75% duty cycle.
FB (Pin 7): Feedback Pin for the Buck Regulator. A resistor
divider from the regulator’s output to the FB pin programs
the output voltage. Servo value for this pin is 0.8V.
MODE (Pin 8): Burst Mode Enable Pin. Tie this pin high
to force the LTC4080 regulator into Burst Mode operation
for all load conditions. Tie this pin low to force constant-
frequency mode operation for all load conditions. Do not
?oat this pin.
EN_BUCK (Pin 9): Enable Input Pin for the Switching
Regulator. Pull this pin high to enable the regulator, pull
low to shut down. Do not ?oat this pin.
= PROG ? 40 0
I BAT
V
R PROG
SW (Pin 10): Switch Pin for the Buck Regulator. Minimize
the length of the metal trace connected to this pin. Place
the inductor as close to this pin as possible.
? A ? C ? P ? R (Pin 5): Open-Drain Power Supply Status Output.
When V CC is greater than the undervoltage lockout
threshold (3.6V) and greater than V BAT + 80mV, the ? A ? C ? P ? R
GND (Pin 11): Ground. This pin is the back of the Exposed
Pad package and must be soldered to the PCB for electrical
connection and rated thermal performance.
4080fb
9
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4081EDD#TRPBF | IC USB POWER MANAGER 10-DFN |
| LTC4085EDE#TRPBF | IC USB POWER MANAGER 14-DFN |
| LTC4088EDE#TRPBF | IC BATT CHARGER/USB 14-DFN |
| LTC4089EDJC-5#TRPBF | IC USB POWER MANAGER 22-DFN |
| LTC4090EDJC-5#TRPBF | IC USB POWER MANAGER 22-DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4080X | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck in 3mm × 3mm DFN |
| LTC4080XEDD#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 |
| LTC4080XEDD#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 |
| LTC4080XEDD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck in 3mm × 3mm DFN |
| LTC4080XEDD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck in 3mm × 3mm DFN |
发布紧急采购，3分钟左右您将得到回复。