ON FAN4149M6X

接地故障保护500µA

Overview

The FAN4149M6X is a low-power controller for detecting hazardous current paths to ground and ground-to-neutral faults. The FAN4149M6X application circuit opens the load contacts before a harmful shock occurs.The FAN4149, in combination with the FAN41501 auto-monitoring digital controller, meets the 2015 UL943 self-test requirements for permanently connected GFCI products. The FAN4149M6X detects and protects against a hot-wire-to-ground fault and a neutral-to-line/load short. The FAN41501 periodically monitors the FAN4149M6X and critical GFI components to comply with the 2015 UL943 requirements. The minimum number of components and the small 6-pin package allow for a dense, flexible, application solution. The FAN4149M6X contains a precision bandgap 14 V shunt regulator, precision low-VOS sense amplifier, time-delay noise filter, window-detection comparators, and an SCR driver. The shunt regulator operates with a low quiescent current, which allows for a high value, low-wattage series supply resistor. The internal temperature compensated shunt regulator, sense amplifier, and bias circuitry provide for precision ground-fault detection. This enables the use of larger component variations so that binning or trimming external components is not required. The typical ±50 µV VOS sense amplifier offset allows for direct DC coupling of the sense coil. This eliminates the large AC-coupling capacitor. The internal delay filter rejects high-frequency noise spikes common with inductive loads. This decreases false nuisance tripping. The SCR driver provides increased current and temperature compensation to allow for a wider selection of external SCRs.The minimum number of external components and the 6-pin SOT23 package allow a low-cost, compact design and layout.

Features

Tape & Reel (TR) Package
Mainly used in Ground Fault Protection applications
Operating temperature: -35°C~85°C
POWER SUPPLY SUPPORT CIRCUIT analog IC
POWER SUPPLY SHUNT REGULATOR VOLTAGE IS 13.7V TO 14.3V

Surface Mount Mounting Type

Applications

There are a lot of ON Semiconductor
FAN4149M6XPower Management applications.

• Space satellite point of load supply
• Communications payload
• Optical imaging payload
• Desktop PC
• Motherboard
• Standard notebook PC
• Chromebook
• WOA
• Docking station
• Port/cable adapters