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LTC4411 PDF预览

LTC4411

更新时间: 2024-11-14 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 二极管
页数 文件大小 规格书
8页 152K
描述
采用 ThinSOT? 封装的 2.6A 低损耗理想二极管

LTC4411 数据手册

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LTC4411  
2.6A Low Loss  
Ideal Diode in ThinSOTTM  
U
DESCRIPTIO  
FEATURES  
Low Loss Replacement for PowerPathTM  
TheLTC®4411isanidealdiodeIC,capableofsupplyingup  
to 2.6A from an input voltage between 2.6V and 5.5V. The  
LTC4411 is housed in a 5-lead 1mm profile SOT-23  
package.  
OR’ing Diodes  
Small Regulated Forward Voltage (28mV)  
2.6A Maximum Forward Current  
Low Forward ON Resistance (140mMax)  
The LTC4411 contains a 140mP-channel MOSFET con-  
necting IN to OUT. During normal forward operation, the  
drop across the MOSFET is regulated to as low as 28mV.  
Quiescent current is less than 40µA for load currents up to  
100mA.Iftheoutputvoltageexceedstheinputvoltage,the  
MOSFET is turned off and less than 1µA of reverse current  
flowsfromOUTtoIN. Maximumforwardcurrentislimited  
toaconstant2.6A(typical)andinternalthermallimitingcir-  
cuits protect the part during fault conditions.  
Low Reverse Leakage Current (<1µA)  
2.6V to 5.5V Operating Range  
Internal Current Limit Protection  
Internal Thermal Protection  
No External Active Components  
Pin-Compatible Monolithic Replacement  
for the LTC4412  
Low Quiescent Current (40µA)  
Low-Profile (1mm) 5-lead SOT-23 Package  
An open-drain STAT pin indicates conduction status. The  
STAT pin can be used to drive an auxiliary P-channel  
MOSFET power switch connecting an alternate power  
source when the LTC4411 is not conducting forward  
current.  
U
APPLICATIO S  
Cellular Phones  
Handheld Computers  
Digital Cameras  
USB Peripherals  
An active-high control pin turns off the LTC4411 and  
reduces current consumption to less than 25µA. When  
shut off, the LTC4411 indicates this condition with a low  
voltage on the status signal.  
Uninterrupted Supplies  
Logic Controlled Power Switch  
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT and  
PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
U
TYPICAL APPLICATIO  
LTC4411 vs Schottky Diode  
Forward Voltage Characteristics  
CONSTANT I  
ON  
WALL  
ADAPTER  
INPUT  
I
OC  
MAX  
TO  
I
I
LOAD  
LTC4411  
V
CC  
CONSTANT  
IN  
OUT  
LTC4411  
SLOPE  
1/R  
R
ON  
ON  
4.7µF  
GND  
CTL  
470k  
BATTERY  
CELL(S)  
FWD  
STATUS OUTPUT  
IS LOW WHEN WALL  
ADAPTER IS SUPPLYING  
LOAD CURRENT  
STAT  
CONSTANT  
4411 F01  
V
ON  
SLOPE  
1/R  
FWD  
Figure 1. Automatic Switchover of Load  
Between a Battery and a Wall Adapter  
SCHOTTKY  
DIODE  
LTC4411 FO1b  
FORWARD VOLTAGE (V)  
V
FWD  
4411fa  
1

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