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LTC4413-1 PDF预览

LTC4413-1

更新时间： 2024-09-25 14:57:27
品牌 Logo 应用领域
亚德诺 - ADI 二极管
页数 文件大小 规格书
18页 252K
描述
采用 3mm x 3mm DFN 封装的双通道 2.6A、2.5V 至 5.5V 快速理想二极管

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中文翻译

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LTC4413-1 数据手册

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LTC4413-1/LTC4413-2  
Dual 2.6A, 2.5V to 5.5V  
Fast Ideal Diodes  
in 3mm × 3mm DFN  
FeaTures  
DescripTion  
n
2-Channel Ideal Diode OR’ing or Load Sharing  
The LTC®4413-1 and LTC4413-2 each contain two mono-  
lithic ideal diodes, each capable of supplying up to 2.6A  
from input voltages between 2.5V and 5.5V. The ideal  
diodesusea100mΩP-channelMOSFETtoindependently  
connect INA to OUTA and INB to OUTB. During normal  
forward operation, the voltage drops across each of  
these diodes are regulated to as low as 18mV. Quiescent  
current is less than 80µA for diode currents up to 1A. If  
either of the output voltages exceeds its respective input  
voltage, that MOSFET is turned off and less than 1µA of  
reverse current flows from OUT to IN. Maximum forward  
current in each MOSFET is limited to a constant 2.6A and  
internal thermal limiting circuits protect the part during  
faultconditions.Aninternalovervoltageprotectionsensor  
detects when a voltage exceeds the LTC4413-2 absolute  
maximum voltage tolerance.  
n
Low Loss Replacement for PowerPath™ OR’ing  
Diodes  
n
Fast Response Replacement for LTC4413  
n
Low Forward On-Resistance (140mΩ Max at 3.6V)  
n
Low Reverse Leakage Current  
n
Low Regulated Forward Voltage (18mV Typ)  
n
Overvoltage Protection Sensor with Drive Output for  
an External P-Channel MOSFET (LTC4413-2 Only)  
n
2.5V to 5.5V Operating Range  
n
2.6A Maximum Forward Current  
n
Internal Current Limit Protection  
n
Internal Thermal Protection  
n
Status Output to Indicate if Selected Channel is  
Conducting  
Programmable Channel On/Off  
Low Profile (0.75mm) 10-Lead 3mm  
Package  
n
n
× 3mm DFN  
Twoactive-highcontrolpinsindependentlyturnoffthetwo  
ideal diodes contained within the LTC4413-1/LTC4413-2.  
When the selected channel is reverse biased, or the  
LTC4413-1/LTC4413-2 is put into low power standby, the  
status signal is pulled low by an 11µA open drain.  
applicaTions  
n
Battery and Wall Adapter Diode OR’ing in Handheld  
Products  
Backup Battery Diode OR’ing  
Power Switching  
USB Peripherals  
Uninterruptable Supplies  
TheLTC4413-1/LTC4413-2arehousedina10-lead3mm  
n
n
n
n
× 3mm DFN package.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
ThinSOT and PowerPath are trademarks of Analog Devices, Inc. All other trademarks are the  
property of their respective owners.  
Typical applicaTion  
Automatic Switchover from a Battery to a Wall Adapter  
FDR8508  
Power Loss vs Load  
700  
V
CC  
600  
WALL  
ADAPTER  
INPUT  
INA  
OUTA  
500  
470k  
STAT  
10µF  
IDEAL  
LTC4413-1  
0.1µF  
1Ω  
ENBA  
STAT  
400  
LTC4413-2  
GND  
OVI  
300  
ENBB  
INB  
OVP  
OUTB  
OVP  
1N5817  
BAT  
200  
TO LOAD  
+
4.7µF  
IDEAL  
100  
0
441312 TA01a  
0
500  
1000 1500 2000 2500 3000  
STAT IS HIGH WHEN WALL ADAPTER IS  
SUPPLYING LOAD CURRENT  
LOAD (mA)  
OVP IS HIGH WHEN WALL ADAPTER VOLTAGE > 6V  
441312 TA01b  
441312fg  
1
For more information www.linear.com/LTC4413-1  
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