Green Mode Power Switch FSL126HR Description The FSL126HR integrated Pulse Width Modulator (PWM) and SENSEFET is specifically designed for highperformance offline Switch Mode Power Supplies (SMPS) with minimal external www.onsemi.com components. FSL126HR includes integrated highvoltage power switching regulators that combine an avalancherugged SENSEFET with a currentmode PWM control block. The integrated PWM controller includes: UnderVoltage Lockout (UVLO) protection, LeadingEdge Blanking (LEB), a frequency generator for EMI attenuation, an optimized gate turnon/turnoff driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop PDIP8 9.42x6.38, 2.54P compensation and fault protection circuitry. The FSL126HR offers CASE 646CM good softstart performance. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSL126HR MARKING DIAGRAM reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for the design of Y&E&Z&2&K costeffective flyback converters. FSL126HR Features Internal AvalancheRugged SENSEFET (650 V) Y = ON Semiconductor Logo Under 50 mW Standby Power Consumption at 265 Vac, Noload &E = Designated Space Condition with Burst Mode &Z = Assembly Plant Code Precision Fixed Operating Frequency with Frequency Modulation for &2 = 2Digit Date code format Attenuating EMI &K = 2Digits Lot Run Traceability Code FSL126HR = Specific Device Code Data Internal Startup Circuit Builtin SoftStart: 20 ms PulsebyPulse Current Limit ORDERING INFORMATION See detailed ordering and shipping information on page 2 of Various Protection: Over Voltage Protection (OVP), Overload this data sheet. Protection (OLP), OutputShort Protection (OSP), Abnormal OverCurrent Protection (AOCP), Internal Thermal Shutdown Function with Hysteresis (TSD) Applications AutoRestart Mode SMPS for VCR, STB, DVD & DVCD UnderVoltage Lockout (UVLO) Players Low Operating Current: 1.8 mA SMPS for Home Appliance Adjustable Peak Current Limit Adapter MAXIMUM OUTPUT POWER (Note 1) Related Resources 230 Vac 15% (Note 2) 85265 Vac FSL126HR ORDERING INFORMATION Part Number Operating Temperature Range Top Mark Package Packing Method FSL126HR 40 to 105 C FSL126HR 8Lead, Dual Inline Package (DIP) Rail TYPICAL APPLICATION DIAGRAM Figure 1. Typical Application INTERNAL BLOCK DIAGRAM V V Drai n STR CC 2 5 6,7,8 I CH V /V BURL BURH 8V/12V V Good CC Internal V REF Bias V V CC CC Random OSC Frequency I I FB DELAY Generator S Q PWM Gate V FB 3 2.5R R Q Driver R I PK 4 LEB On-Time Soft Detector Start OSP 1 GND S Q VSD AOCP R V Good Q V CC V CC OCP TSD V OVP Figure 2. Internal Block Diagram www.onsemi.com 2