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参数资料
| 型号： | LTC4054ES5-4.2#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封装： | LEAD FREE, PLASTIC, TSOT-23, 5 PIN |
| 文件页数： | 13/16页 |
| 文件大小： | 185K |
| 代理商： | LTC4054ES5-4.2#TRMPBF |
6
LTC4054-4.2/LTC4054X-4.2
405442xf
UU
U
PI FU CTIO S
CHRG (Pin 1): Open-Drain Charge Status Output. When
the battery is charging, the CHRG pin is pulled low by an
internal N-channel MOSFET. When the charge cycle is
completed, a weak pull-down of approximately 20
A is
connected to the CHRG pin, indicating an “AC present”
condition. When the LTC4054 detects an undervoltage
lockout condition, CHRG is forced high impedance.
GND (Pin 2): Ground.
BAT (Pin 3): Charge Current Output. Provides charge
current to the battery and regulates the final float voltage
to 4.2V. An internal precision resistor divider from this pin
sets the float voltage which is disconnected in shutdown
mode.
VCC (Pin 4): Positive Input Supply Voltage. Provides
power to the charger. VCC can range from 4.25V to 6.5V
and should be bypassed with at least a 1
F capacitor.
When VCC drops to within 30mV of the BAT pin voltage, the
LTC4054 enters shutdown mode, dropping IBAT to less
than 2
A.
PROG (Pin 5): Charge Current Program, Charge Current
Monitor and Shutdown Pin. The charge current is pro-
grammed by connecting a 1% resistor, RPROG, to ground.
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:
IBAT = (VPROG/RPROG) 1000
The PROG pin can also be used to shut down the charger.
Disconnecting the program resistor from ground allows
a 3
A current to pull the PROG pin high. When it reaches
the 1.21V shutdown threshold voltage, the charger enters
shutdown mode, charging stops and the input supply
current drops to 25
A. This pin is also clamped to
approximately 2.4V. Driving this pin to voltages beyond
the clamp voltage will draw currents as high as 1.5mA.
Reconnecting RPROG to ground will return the charger to
normal operation.
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4054ES5-4.2#TRPBF | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
| LTC4054XES5-4.2#TRMPBF | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
| LTC4054LES5-4.2#TRMPBF | Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +125°C |
| LTC4055EUF#PBF | USB Power Controller and Li-Ion Linear Charger; Package: QFN; No of Pins: 16; Temperature Range: -40°C to +125°C |
| LTF5022T-4R7N2R0-LC | 1 ELEMENT, 4.7 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4054L | 制造商:LINER 制造商全称:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4054L-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:150mA Standalone Linear Li-Ion Battery Charger in ThinSOT |
| LTC4054LES5-4.2 | 制造商:Linear Technology 功能描述:Battery Charger Li-Ion 10mA to 150mA 4.2V 5-Pin TSOT-23 |
| LTC4054LES5-4.2#PBF | 制造商:Linear Technology 功能描述:Bulk 制造商:Linear Technology 功能描述:CHARGER BATTERY LI-ION 0.8A 5SOT23 制造商:Linear Technology 功能描述:CHARGER, BATTERY, LI-ION, 0.8A, 5SOT23 |
| LTC4054LES5-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-5 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 |
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