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參數(shù)資料
| 型號： | LTC4054LES5-4.2#TRMPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 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： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | PLASTIC, MO-193, LEAD FREE, TSOT-23, 5 PIN |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 192K |
| 代理商： | LTC4054LES5-4.2#TRMPBF |
14
LTC4054L-4.2
4054l42f
APPLICATIO S I FOR ATIO
WU
UU
Reverse Polarity Input Voltage Protection
In some applications, protection from reverse polarity
voltage on VCC is desired. If the supply voltage is high
enough, a series blocking diode can be used. In other
cases, where the voltage drop must be kept low a P-channel
MOSFET can be used (as shown in Figure 4).
USB and Wall Adapter Power
The LTC4054L allows charging from both a wall adapter
and a USB port. Figure 5 shows an example of how to
combine wall adapter and USB power inputs. A P-channel
MOSFET, MP1, is used to prevent back conducting into the
USB port when a wall adapter is present and a Schottky
diode, D1, is used to prevent USB power loss through the
1k pull-down resistor.
VIN
VCC
LTC4054L
DRAIN-BULK
DIODE OF FET
4054L42 F04
+
LTC4054L-4.2
PROG
VCC
D1
5V WALL
ADAPTER
USB
POWER
100mA
SYSTEM
LOAD
Li-Ion
BATTERY
MP1
1k
1.5k
4
3
5
4054l42 F05
BAT
Figure 4. Low Loss Input Reverse Polarity Protection
Figure 5. Combining Wall Adapter and USB Power
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| LTF5022T-3R3N2R5-LC | 1 ELEMENT, 3.3 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTF5022T-2R2N3R2-LC | 1 ELEMENT, 2.2 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
| LTF5022T-1R2N4R2-LC | 1 ELEMENT, 1.2 uH, FERRITE-CORE, GENERAL PURPOSE INDUCTOR, SMD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4054X | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054X-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054XES5-4.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054XES5-4.2#PBF | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 |
| LTC4054XES5-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:61 系列:- 功能:電源管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應商設備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
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