sg6521 Fairchild Semiconductor, sg6521 Datasheet

no-image

sg6521

Manufacturer Part Number
sg6521
Description
Sg6521 ? Pc Power Supply Supervisors
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
sg6521SZ
Manufacturer:
RENESAS
Quantity:
101
© 2007 Fairchild Semiconductor Corporation
SG6521 • Rev. 1.0.0
SG6521 — PC Power Supply Supervisors
Features
Applications
Ordering Information
SG6521DZ
SG6521SZ
Number
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Part
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 Protection Input (Pext)
Switch-Mode Power Supplies with Active PFC
Servo System Power Supplies
PC-ATX Power Supplies
Operating Temperature
-40°C to +85°C
-40°C to +85°C
Range
Status
RoHS
RoHS
Eco
16-pin Dual In-Line Package (DIP)
16-pin Small Outline Package (SOP)
Description
The SG6521 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
external current shunt is used for OCP functions. An
external resistor can be used to adjust 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, PGO
signal is pulled LOW.
Package
September 2008
Tape & Reel
www.fairchildsemi.com
Packing
Method
Rail

Related parts for sg6521

sg6521 Summary of contents

Page 1

... For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Description The SG6521 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. ...

Page 2

... Application Diagram © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Figure 1. Typical Application 2 www.fairchildsemi.com ...

Page 3

... Block Diagram © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Figure 2. Function Block Diagram 3 www.fairchildsemi.com ...

Page 4

... VDD diodes, respectively. Power-Good Logic Output (open-drain). Power good=1 means that the power supply 16 PGO is good for operation. The power good delay is 300ms. © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Figure 3. Pin Configuration(Top View) = 1.25/R , for OCP programming. REF I 4 www.fairchildsemi.com ...

Page 5

... Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter T Operating Ambient Temperature A © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Parameter Human Body Model: JESD22-A114 Machine Model: JESD22-A115 Min. -40 5 Min ...

Page 6

... Timing PSON to On/Off PSON t Timing PGO LOW to FPO HIGH PSOFF External Protection Detect Section V Pext Threshold TH t Pext Delay Time Pext © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Conditions Min. 4.2 PSON = LOW PSON = HIGH 1 VS33 3.7 VS5 5.7 VS12, VS12B 13 18.5kΩ ~75kΩ ...

Page 7

... Functional Description The SG6521 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; ...

Page 8

... Timing Chart © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 Figure 5. Timing Diagram 8 www.fairchildsemi.com ...

Page 9

... Temperature (℃) Figure 8. V OFFSET 1.30 1.28 1.26 1.24 1.22 1.20 -40 -25 - Temperature (℃) Figure 10. V © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 2.000 1.900 1.800 1.700 1.600 1.500 110 125 vs 28.000 26.000 24.000 22.000 20.000 18.000 16.000 50 ...

Page 10

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 A 19.68 18. ...

Page 11

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 10.00 A 9.80 8.89 ...

Page 12

... Fairchild Semiconductor Corporation SG6521 • Rev. 1.0.0 12 www.fairchildsemi.com ...

Related keywords