LTC4365 - UV, OV and Reverse Supply Protection Controller

describe:

^{The LTC4365} provides protection for applications where the supply input voltage may be too high, too low, or even negative. It does this by controlling the gate voltage of a pair of external N-channel MOSFETs to ensure that the output is within a safe operating range.

The LTC4365 can withstand voltages from -40V to 60V and has an operating range of 2.5V to 34V, while consuming only 125μA in normal operation.

Two comparator inputs provide configuration of overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A shutdown pin provides external control for enabling and disabling the MOSFET and placing the device in a low current shutdown state. A fault output provides the state of the GATE pin pulled low. A fault is indicated when the device is in shutdown or the input voltage is outside the range of the UV and OV set points.

Features:

Wide operating voltage range: 2.5V to 34V

Overvoltage protection up to 60V

Power reverse protection to -40V

Can isolate 50Hz and 60Hz AC power

No input capacitor or TVS (transient voltage suppressor) required for most applications

Adjustable undervoltage and overvoltage protection range

Charge pump enhances external N-channel MOSFET

Low operating current: 125μA

Low shutdown current: 10μA

Fault status output

Compact 8-pin 3mm x 2mm DFN and TSOT-23 (ThinSOTTM) packages

Package:

Typical applications: