DescriptionThe FSL4110LR is an integrated pulse width modulation (PWM) controller and 1000 V avalanche rugged SenseFET specifically designed for high input voltage offline Switching Mode Power Supplies (SMPS) with minimal external components. VCC can be supplied through integrated high-voltage power regulator without auxiliary bias winding.

Features■ Built-in Avalanche Rugged 1000 V SenseFET
■ Precise Fixed Operating Frequency: 50 kHz
■ VCC can be supplied from either bias-winding or selfbiasing.
■ Soft Burst-Mode Operation Minimizing Audible Noise
■ Random Frequency Fluctuation for Low EMI
■ Pulse-by-Pulse Current Limit
■ Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis. Under-Voltage Lockout (UVLO) and Line Over-Voltage Protection (LOVP) with Hysteresis.
■ Built-in Internal Startup and Soft-Start Circuit
■ Fixed 1.6 s Restart Time for Safe Auto-Restart Mode of All Protections

Applications■ SMPS for Electric Metering
■ Auxiliary Power Supply for 3-Phase Input Industrial Systems

Manufacturer	onsemi
Product Category	AC DC Converters, Offline Switchers
Series	-
Packaging	Alternate Packaging
Package-Case	8-SMD (7 Leads), Gull Wing
Operating-Temperature	-40°C ~ 125°C (TJ)
Mounting-Type	Surface Mount
Supplier-Device-Package	7-LSOP
Watt	9W
Output-Isolation	Isolated
Internal-Switch-s	Yes
Voltage-Breakdown	1000V
Topology	Flyback
Voltage-Start-Up	12V
Voltage-Supply-Vcc-Vdd	8 V ~ 27 V
Duty-Cycle	67%
Frequency-Switching	50kHz
Fault-Protection	Current Limiting, Over Load, Over Temperature, Over Voltage
Control-Features	-