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Product Descriptions

The LTC?4417 connects one of three valid power supplies to a common output based on priority. Priority is defined by pin assignment, with V1 assigned the highest priority and V3 the lowest priority. A power supply is defined as 

valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least 256ms. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected 

and the next highest priority valid input is connected to the common output. Two or more LTC4417s can be cascaded to provide switchover between more than three inputs.

The LTC4417 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled output ramp feature minimizes 

start-up inrush current. 

Open drain VALID outputs indicate the input supplies have been within their OV/UV window for 256ms.

Product Features

• Selects Highest Priority Supply from Three Inputs

•  Blocks Reverse and Cross Conduction Currents

•  Wide Operating Voltage Range: 2.5V to 36V

•  –42V Protection Against Reverse Battery Connection

•  Fast Switchover Minimizes Output Voltage Droop

•  Low 28μA Operating Current

•  <1μA Current Draw from Supplies Less than VOUT

•  1.5 percent Input Overvoltage/Undervoltage Protection

•  Adjustable Overvoltage/Undervoltage Hysteresis

•  P-Channel MOSFET Gate Protection Clamp

•  Cascadable for Additional Input Supplies

•  24-Lead Narrow SSOP and 4mm × 4mm QFN Packages

Product Applications

•  Industrial Handheld Instruments

•  High Availability Systems

•  Battery Backup Systems

•  Servers and Computer Peripherals

Specifications

Actual product photos

Product Data Book：

For more product information, please download the PDF

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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