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LTC4412HVIS6#TRMPBF PDF预览

LTC4412HVIS6#TRMPBF

更新时间： 2024-09-25 13:09:51
品牌 Logo 应用领域
凌特 - Linear 电源电路电源管理电路光电二极管控制器
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12页 173K
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LTC4412HVIS6#TRMPBF 数据手册

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LTC4412HV  
36V, Low Loss PowerPathTM  
Controller in ThinSOT  
U
FEATURES  
DESCRIPTIO  
TheLTC®4412HVcontrolsanexternalP-channelMOSFET  
to create a near ideal diode function for power switchover  
orloadsharing.ThispermitshighlyefficientOR’ingofmul-  
tiple power sources for extended battery life and low self-  
heating. When conducting, the voltage drop across the  
MOSFET is typically 20mV. For applications with a wall  
adapter or other auxiliary power source, the load is auto-  
maticallydisconnectedfromthebatterywhentheauxiliary  
sourceisconnected.TwoormoreLTC4412HVsmaybein-  
terconnected to allow load sharing between multiple bat-  
teriesorchargingofmultiplebatteriesfromasinglecharger.  
The LTC4412HV is an extended supply and temperature  
range version of the LTC4412.  
■
Very Low Loss Replacement for Power Supply  
OR’ing Diodes  
■
3V to 36V AC/DC Adapter Voltage Range  
■
–40°C to 125°C Operating Temperature Range  
■
Minimal External Components  
■
Automatic Switching Between DC Sources  
■
Simplifies Load Sharing with Multiple Batteries  
■
Low Quiescent Current: 11µA  
■
2.5V to 36V Battery Voltage Range  
■
Reverse Battery Protection  
■
Drives Almost Any Size MOSFET for Wide Range of  
Current Requirements  
■
MOSFET Gate Protection Clamp  
■
Manual Control Input  
The wide supply operating range supports operation from  
one to eight Li-Ion cells in series. The low quiescent  
current (11µA typical) is independent of the load current.  
The gate driver includes an internal voltage clamp for  
MOSFET protection.  
Low Profile (1mm) SOT-23 (ThinSOTTM) Package  
■
U
APPLICATIO S  
■
Industrial and Automotive Applications  
■
Notebook and Handheld Computers  
The STAT pin can be used to enable an auxiliary P-channel  
MOSFET power switch when an auxiliary supply is  
detected. This pin may also be used to indicate to a micro-  
controller that an auxiliary supply is connected. The con-  
trol (CTL) input enables the user to force the primary  
MOSFET off and the STAT pin low.  
■
USB-Powered Peripherals  
■
Uninterruptable Power Supplies  
■
Logic Controlled Power Switch  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
PowerPath and ThinSOT are trademarks of Linear Technology Corporation.  
TheLTC4412HVisavailableinalowprofile(1mm)SOT-23  
package.  
U
LTC4412HV vs Schottky Diode Forward Voltage Drop  
TYPICAL APPLICATIO  
1
CONSTANT  
1N5819  
WALL  
R
ON  
ADAPTER  
INPUT  
FDN306P  
TO LOAD  
BATTERY  
CELL(S)  
LTC4412HV  
C
OUT  
LTC4412HV  
1
2
3
6
5
4
V
CC  
V
IN  
SENSE  
CONSTANT  
VOLTAGE  
GND GATE  
CTL STAT  
470k  
SCHOTTKY  
DIODE  
STATUS OUTPUT  
LOW WHEN WALL  
ADAPTER PRESENT  
4412HV F01  
0
0.02  
Figure 1. Automatic Switchover of Load Between a Battery and a Wall Adapter  
0.5  
4412HV F01b  
FORWARD VOLTAGE (V)  
sn4412hv 4412hvfs  
1
1234567...12

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LTC4412HVIS6#TRMPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC4412HVIS6#TRPBF Linear

完全替代

 LTC4412HV - 36V, Low Loss PowerPath Controller in ThinSOT; Package: SOT; Pins: 6; Temperat
LTC4412HVIS6 Linear

完全替代

 36V, Low Loss PowerPathTM Controller in ThinSOT

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