LT LTC4417CUF#PBF

源极选择器开关P 通道

Overview

The LTC4417CUF#PBF 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 LTC4417CUF#PBF 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.

Features

PowerPath™ Series
in a 24-WFQFN Exposed Pad case
FET Type: P-Channel
24 terminations

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC4417CUF#PBF Ideal Diode controller applications.

• Digital Cameras
• Modems
• Cell phones
• Digital Radios
• MP3 Players
• Active OR-ing of Redundant (N+1) Power Supplies
• Automotive battery protection
• ADAS domain controller
• Camera ECU
• Head Unit