SG6510X1 — PC Power Supply Supervisors
December 2008
SG6510X1 — PC Power Supply Supervisors
Features
Over-Voltage Protection (OVP) for 3.3V, 5V, 12V
Under-Voltage Sense (UVS) and Under-Voltage
Protection (UVP) for 3.3V, 5V
Open-Drain Output for PGO and FPO Pins
300ms Power-Good Delay
75ms Turn-on Delay for 3.3V and 5V
2.8ms PSON Control to FPO Turn-off Delay
38ms /38ms PSON Control Debounce
350μs Width Noise Deglitches
2ms UVP Debounce Time
1ms UVS Debounce Time
No Lockup During the Fast AC Power On/Off
Brownout Protection Function for 3.3V and 5V
Wide Supply Voltage Range from 4V to 15V
Description
SG6510 is designed to provide the voltage supervisor
function, remote on/off PSON function, power-good
(PGO) indicator function, and fault protection (FPO)
function for switching power systems.
For the supervisor function, it provides the over-voltage
protection (OVP) monitoring for 3.3V, 5V, and 12V (12V
via VDD pin); under-voltage sense (UVS) monitoring for
3.3V and 5V; and under-voltage protection (UVP)
monitoring for 3.3V and 5V. When 3.3V or 5V voltage is
decreasing to 2.8V and 4.2V, respectively, the under-
voltage sense (UVS) function is enabled to reset the
PGO signal from high to low. If 3.3V or 5V voltage is
further decreasing to 2.5V and 3.6V, respectively, FPO
is set high to turn off the PWM controller IC. To achieve
better immunity for lighting surge glitch and to prevent
accidental power shut down during dynamic loading
condition, the debounce time for UVP and UVS is
2ms/1ms, respectively. The deglitch time for OVP is
75µs for better noise immunity. During an AC sag or
brownout situation, UVP functions can still be enabled
to protect power supply in case of output short circuit.
The power supply is turned on after 38ms debounce
time when the PSON signal is set from high to low. To
turn off the power supply, the PSON signal is set from
low to high and the debounce time is 38ms. The PGI
circuitry provides a sufficient power-down warning
signal for PGO. When PGI input is lower than the
internal 1.2V reference voltage, after 350μs debounce
time, the PGO signal is pulled low.
Ordering Information
Part Number
SG6510DY1
SG6510DZ1
SG6510SZ1
SG6510SY1
Operating Temperature Range
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
Package
DIP-8
DIP-8
SOP-8
SOP-8
Eco Status
Green
RoHS
RoHS
Green
Packing Method
Tube
Tube
Tape & Reel
Tape & Reel
For Fairchild’s definition of “green” please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2008 Fairchild Semiconductor Corporation
SG6510X1 • Rev. 1.1.1
www.fairchildsemi.com
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