2.6A LOW LOSS IDEAL DIODE
LTC4411ES5
LTC4411 - 2.6A Low Loss Ideal Diode in ThinSOT
Features
Low Loss Replacement for PowerPathTM OR'ing Diodes
Small Regulated Forward Voltage (28mV)
2.6A Maximum Forward Current
Low Forward ON Resistance (140mohm Max)
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
Description
The LTC®4411 is an ideal diode IC, capable of supplying up 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.
The LTC4411 contains a 140mohm P-channel MOSFET connecting 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. If the output voltage exceeds the input voltage, the MOSFET is turned off and less than 1µA of reverse current flows from OUT to IN. Maximum forward current is limited to a constant 2.6A (typical) and internal thermal limiting circuits protect the part during fault conditions.
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.
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.
Applications
Cellular Phones
Handheld Computers
Digital Cameras
USB Peripherals
Uninterrupted Supplies
Logic Controlled Power Switch