Specification	FSQ500L

Control Features	Soft Start
Duty Cycle	60 %
Fault Protection	Current Limiting, Over Load, Over Temperature
Frequency - Switching	130 kHz
Internal Switch(s)	True
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Isolation	Isolated
Package / Case	TO-261AA, TO-261-4
Power (Watts)	3 W
Supplier Device Package	SOT-223-4
Topology	Flyback
Voltage - Breakdown	700 V
Voltage - Start Up	6 V
Voltage - Supply (Vcc/Vdd) [Max]	10 V
Voltage - Supply (Vcc/Vdd) [Min]	5 V

FSQ500L Series

700V Integrated Power Switch with 130kHz frequency and no bias winding for 2.5W offline flyback converters

Part	Output Isolation	Supplier Device Package	Fault Protection	Power (Watts)	Package / Case	Package / Case	Package / Case	Voltage - Start Up	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Breakdown	Topology	Duty Cycle	Mounting Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching	Internal Switch(s)	Control Features
ON Semiconductor FSQ500N	Isolated	8-DIP	Current Limiting Over Load Over Temperature	6.5 W	0.3 in	8-DIP	7.62 mm	6 V	85 °C	-40 °C	700 V	Flyback	60 %	Through Hole	10 V	5 V	130 kHz
ON Semiconductor FSQ500L	Isolated	SOT-223-4	Current Limiting Over Load Over Temperature	3 W		TO-261-4 TO-261AA		6 V	85 °C	-40 °C	700 V	Flyback	60 %	Surface Mount	10 V	5 V	130 kHz		Soft Start

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.94
		10	$ 1.20
		25	$ 1.01
		100	$ 0.81
		250	$ 0.71
		500	$ 0.65
		1000	$ 0.60
	Digi-Reel®	1	$ 1.94
		10	$ 1.20
		25	$ 1.01
		100	$ 0.81
		250	$ 0.71
		500	$ 0.65
		1000	$ 0.60

Description

General part information

FSQ500L Series

The FSQ500L is specially designed for a replacement of linear power supplies with low cost. This device combines current-mode Pulse Width Modulator (PWM) with a senseFET. The integrated PWM controller features include: a fixed oscillator, Under Voltage Lockout (UVLO) protection, Overload Protection (OLP), Leading-Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shutdown (TSD) protection with hysteresis, and temperature-compensated precision-current sources for loop compensation. When compared to a linear power supply, the FSQ500L device reduces total size and weight, while increasing efficiency, productivity, and system reliability. This device provides a basic platform for cost-effective flyback converters