LTC4417CGN#PBF

LTC4417 is a prioritized powerpath™controller. This device 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 device can be cascaded to provide switchover between more than three inputs. It is widely used in application such as industrial handheld instruments, high availability systems, battery backup systems, servers and computer peripherals etc.

• Blocks reverse and cross conduction currents
• Wide operating voltage range is 2.5V to 36V
• –42V protection against reverse battery connection
• Fast switchover minimizes output voltage drop
• Low operating current is 28µA
• <lt/>1µA current draw from supplies less than VOUT
• 1.5% input overvoltage/undervoltage protection
• Adjustable overvoltage/undervoltage hysteresis, P-channel MOSFET gate protection clamp
• Cascadable for additional input supplies
• Operating temperature is 0°C to 70°C, packaging style is 24-lead narrow plastic SSOP

บันทึก

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