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參數(shù)資料
| 型號(hào)： | LTC4054 |
| 廠商： | Linear Technology Corporation |
| 元件分類(lèi)： | 熱敏電阻 |
| 英文描述： | Standalone Linear Li-lon Battery Charger with Thermistor Input |
| 中文描述： | 獨(dú)立線性鋰離子電池充電器熱敏電阻輸入 |
| 文件頁(yè)數(shù)： | 14/16頁(yè) |
| 文件大?。?/td> | 191K |
| 代理商： | LTC4054 |
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14
LTC4054L-4.2
4054l42f
APPLICATIOU
Reverse Polarity Input Voltage Protection
In some applications, protection from reverse polarity
voltage on V
CC
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).
W
U
U
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.
V
IN
V
CC
LTC4054L
DRAIN-BULK
DIODE OF FET
4054L42 F04
+
LTC4054L-4.2
PROG
V
CC
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4054-4.2 | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT |
| LTC4054ES5-4.2 | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 |
| LTC4054ES54.2#PBF | 制造商:Linear Technology 功能描述: |
| LTC4054ES5-4.2#PBF | 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:Constant Current/Voltage Charger Li-Ion 500mA 4.2V 5-Pin TSOT-23 Bulk |
| LTC4054ES5-4.2#TR | 功能描述:IC CHARGR BATTERY L-ION TSOT23-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):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(lèi)型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤(pán) 包裝:管件 |
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