FSL336LR Series

650V Integrated Power Switch with Error Amp and no bias winding for 9Watt offline buck converters

Catalog

650V Integrated Power Switch with Error Amp and no bias winding for 9Watt offline buck converters

Part	Fault Protection	Voltage - Breakdown	Power (Watts)	Voltage - Start Up	Package / Case	Package / Case	Package / Case	Supplier Device Package	Frequency - Switching	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Internal Switch(s)	Output Isolation	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type
ON Semiconductor FSL336LRN	Current Limiting Open Loop Over Load Over Temperature Over Voltage	650 V	20 W	8 V	7.62 mm	0.3 in 7 Leads	8-DIP	7-DIP	50 kHz	7 V	26 V		Non-Isolated	-40 °C	125 ¯C	Through Hole
ON Semiconductor FSL336LRN	Current Limiting Open Loop Over Load Over Temperature Over Voltage	650 V	20 W	8 V	7.62 mm	0.3 in 7 Leads	8-DIP	7-DIP	50 kHz	7 V	26 V		Non-Isolated	-40 °C	125 ¯C	Through Hole

Catalog

650V Integrated Power Switch with Error Amp and no bias winding for 9Watt offline buck converters

Key Features

• Built-in Avalanche-Rugged SenseFET: 650 V

• Fixed Operating Frequency: 50 kHz

• No-Load Power Consumption:

• <25 mW at 230 VACwith External Bias;

• <120 mW at 230 VACwithout External Bias

• No Need for Auxiliary Bias Winding

• Frequency Modulation for Attenuating EMI

• Pulse-by-Pulse Current Limiting

• Ultra-Low Operating Current: 250 µA

• Built-in Soft-Start and Startup Circuit

• Adjustable Peak Current Limit

• Built-in Transconductance (Error) Amplifier

• Various Protections: Overload Protection (OLP), Over-Voltage Protection (OVP), Feedback Open-Loop Protection (FB_OLP), Thermal Shutdown (TSD)

• Fixed 650 ms Restart Time for Safe Auto-Restart of All Protections

Description

The FSL336LR integrated Pulse Width Modulator (PWM) and SenseFET is specifically designed for high-performance offline buck, buck-boost, and non-isolation flyback Switched Mode Power Supplies (SMPS) with minimal external components. This device integrates a high-voltage power regulator that enables operation without auxiliary bias winding. An internal transconductance amplifier reduces external components for the feedback compensation circuit.The integrated PWM controller includes: 10 V regulator for no external bias circuit, Under-Voltage Lockout (UVLO), Leading-Edge Blanking (LEB), an optimized gate turn-on / turn-off driver, EMI attenuator, Thermal Shutdown (TSD), temperature-compensated precision current sources for loop compensation, and fault-protection circuitry. Protections include: Overload Protection (OLP), Over-Voltage Protection (OVP), and Feedback Open Loop Protection (FB_OLP). FSL336LR offers good soft-start performance during startup.The internal high-voltage startup switch and the Burst-Mode operation with very low operating current reduce the power loss in Standby Mode. As the result, it is possible to reach power loss of 120 mW without external bias and 25 mW with external bias when input voltage is 230 VAC.