GF4146 Datasheet | Unisonic Technologies

UNISONIC TECHNOLOGIES CO., LTD GF4146 GROUND FAULT INTERRUPTER CMOS IC - DESCRIPTION The UTC GF4146 is a two-wire low-power controller for Residual Current Devices (RCD) and AC outlet Appliance Leakage Circuit Interrupters (ALCI) . The UTC GF4146 detects hazardous grounding conditions and open circuits the line before a harmful shock occurs. Internally, the UTC GF4146 contains a diode rectifier, 12V shunt regulator using a precision temperature-pensated bandgap reference, precision low VOS offset-sense amplifier, time delay noise filter, window-detection parators, and a SCR driver. With the addition of a minimum number of external ponents, the UTC GF4146 detects and protects against a hot-wire-to-ground fault. The UTC GF4146 circuitry has a built-in rectifier and shunt regulator that operates with a low quiescent current. This allows for a high-value, low-wattage-series supply resistor. The internal temperature pensated shunt regulator, sense amplifier, and bias circuitry provide for precision ground-fault detection. The low VOS offset-sense amplifier allows direct coupling of the sense coil to the amplifier’s feedback signal. This eliminates the large 50/60Hz AC-coupling capacitor. The internal delay filter rejects high-frequency noise spikes mon with inductive loads. This decreases false nuisance tripping. The internal SCR driver is temperature pensated and designed to satisfy the current requirements for a wide selection of external SCRs. - Features - For Two-Wire ALCI and RCD Applications - Precision Sense Amplifier and Bandgap Reference - Built-in AC Rectifier - Direct DC Coupled to Sense Coil - Low-Voltage SCR Disable - Adjustable Sensitivity - Built-in Noise Filter - SCR Gate Driver - Minimum External ponents - Ideal for 120V or 220V Systems - ORDERING INFORMATION Ordering Number Lead Free Halogen Free GF4146L-AG6-R GF4146G-AG6-R Package SOT-26 Packing Tape Reel GF414G-AG6-R (1)Packing Type (2)Package Type (3)Green...