FSEZ1216 − Primary Side Regulation PWM Integrated Power MOSFET

Obsolete as of 27-Aug-2012

The primary-side PWM integrated Power MOSFET, FSEZ1216, significantly simplifies power supply design that requires CV and CC regulation capabilities. FSEZ1216 controls the output voltage and current precisely only with the information in the primary side of the power supply, not only removing the output current sensing loss, but also eliminating all secondary feedback circuitry. The green-mode function with a low startup current (10µA) maximizes the light load efficiency so the power supply can meet stringent standby power regulations. Compared with conventional secondary side regulation approach, the FSEZ1216 can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability.

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Product Status/Packaging

Index	Product	Product & Eco Status	Replacement Part Number	Packaging & Packing Info	**Package Marking Convention	Qualification Support	Compliance Certificates
2	FSEZ1216NY_SN00026	Obsolete as of 23-Feb-2012 Green as of Apr 2009		MDIP 8L Details MDIP 8L Drawing RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:EZ1216 Line 3:NYJ	ESD (CDM) : 1250 V ESD (HBM) : 2500 V RTHETA (JA) : 113 °C/W Show more... R_ƟJC : 67 °C/W Moisture Sensitivity Level (MSL) : NA Max Reflow Temp : 999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
2	FSEZ1216NY	Obsolete as of 27-Aug-2012 Green as of Aug 2008		MDIP 8L Details MDIP 8L Drawing RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:EZ1216 Line 3:NYJ	ESD (CDM) : 1250 V ESD (HBM) : 2500 V RTHETA (JA) : 113 °C/W Show more... R_ƟJC : 67 °C/W Moisture Sensitivity Level (MSL) : NA Max Reflow Temp : 999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG

Features

Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
Green-Mode : Frequency Reduction at Light-Load
Fixed PWM Frequency at 42kHz with Frequency Hopping to Reduce EMI
Cable Voltage Drop Compensation in CV Mode
Low Startup Current: 10µA
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
VsubDD/sub Over-Voltage Protection with Auto-Restart
VsubDD/sub Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 18V
Fixed Over-Temperature Protection with Latch
DIP-8 Package Available lt/!-- Be sure special characters or formatting display properly - see the following two examples--lt/gt/

Additional Resources

Design Tools Knowledgebase – Ask a Question Find a local sales office Product change notices (PCN) How to Buy Products or Order Samples

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