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FND850-12DRG Front-End Preliminary Data Sheet
DC Input, 12V Output, 850 Watts
FND850-12DRG Signal/Pin/Ground Reference Information
Ground Reference
LRTN (Logic Return) 10R resistor is internally
connected to Aux Ground
ADDR0, I C Address Bus
ADDR2, I C Address Bus
ADDR3, I C Address Bus
DATA, I C Data Line
Signal
OverTemperature / Fan Fail
DC Input Fail Warning
Power Supply Present
Output Voltage Fault
Internal Ground
2
ADDR1, I 2 C Address Bus
2
2
ADDR4, I 2 C Address Bus
2
CLOCK, I 2 C Clock Line
Auxiliary Power +5V
Auxiliary Power Ground
Logic Ground
Pin
Location
U1
U2
U3
U4
U5
T1
T2
T3
T4
T5
S1
S2
S3
S4
S5
SRTN (Signal Return) is internally connected with Vout-
Logic Ground (LRTN)
Logic Ground (LRTN)
Logic Ground (LRTN)
Logic Ground (LRTN)
Internal Ground (SRTN)
Internal Ground (SRTN)
Internal Ground (SRTN)
Internal Ground (SRTN)
Internal Ground (SRTN)
Internal Ground (SRTN)
Logic Ground (LRTN)
Logic Ground (LRTN)
Aux Ground
Aux Ground
Logic Ground (LRTN)
Output Enable
Vsense+
Vsense-
Output Margin
Not Used
Vout+
Vout-
1
R1
R2
R3
R4
R5
P1, P2, P3
P4, P5, P6
Logic Ground (LRTN)
Vsense-
Vsense-
Internal Ground (SRTN)
Vsense-
Vsense-
1
Short pin length
MCD10096 Rev. 1.6, 23-Jul-10
Page 10 of 11
www.power-one.com
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