SG6520A − PC Power Supply Supervisors

Obsolete as of 19-Dec-2012

The SG6520A is designed to provide the supply voltage, current supervisor, remote on/off (PSON), power-good (PGO) indicator, and fault protection (FPO) functions for switching power systems. For supervisory functions, it provides the over-voltage protection (OVP) for 3.3V, 5V, and two 12V; over-current protection (OCP) for 3.3V, 5V, and two 12V; under-voltage protection (UVP) for 3.3V, 5V, and two 12V. When 3.3V, 5V, or 12V voltage decreases to 2.3V, 3.5V, and 9V, respectively, the under-voltage protection function is enabled. FPO is set HIGH to turn off the PWM controller IC. The voltage difference across the external current shunt is used for OCP functions. An external resistor can be used to adjust the protection threshold. An additional protection input pin provides the flexibility for designing protection circuits. The power supply is turned on after a 48ms delay when PSON signal is set from HIGH to LOW. To turn off the power supply, the PSON signal is set from LOW to HIGH with a delay of 48ms. The PGI circuitry provides a power-down warning signal for PGO. When PGI input is lower than the internal 1.25V reference voltage, the PGO signal is pulled LOW.

Download Datasheet

Product Status/Packaging

Index	Product	Product & Eco Status	Replacement Part Number	Packaging & Packing Info	**Package Marking Convention	Qualification Support	Compliance Certificates
2	SG6520ADY	Obsolete as of 14-Dec-2011 Green as of Sep 2008		MDIP 16L Details MDIP 16L Drawing RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &4 (4-Digit Date Code) &K Line 2:SG6520A Line 3:DYA	ESD (HBM) : 3000 V Moisture Sensitivity Level (MSL) : NA Max Reflow Temp : 999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
2	SG6520ADZ	Obsolete as of 19-Dec-2012 ROHS Compliant		MDIP 16L Details MDIP 16L Drawing RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &4 (4-Digit Date Code) &K Line 2:SG6520A Line 3:DZA	ESD (HBM) : 3000 V Moisture Sensitivity Level (MSL) : NA Max Reflow Temp : 999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG

Features

Two 12V Sense Input Pins: VS12 and VS12B
Over-Voltage Protection (OVP) for 3.3V, 5V, and Two 12V
Over-Current Protection (OCP) for 3.3V, 5V, and Two 12V
Under-Voltage Protection (UVP) for 3.3V, 5V, and Two 12V
Open-Drain Output for PGO and FPO Pins
300ms Power-Good Delay
2.8ms PSON Control to FPO Turn-off Delay
48ms PSON Control Delay
No Lock-up During the Fast AC Power On/Off
Wide Supply Voltage Range: 4V to 15V
Over-Temperature Protection (OTP)

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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