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SG6105ATP View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
SG6105ATP Power Supply Supervisor + Regulator + PWM Fairchild
Fairchild Semiconductor Fairchild
SG6105ATP Datasheet PDF : 18 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Power Supply Supervisor + Regulator + PWM
Product Specification
SG6105A
PIN DESCRIPTIONS
Name Pin Type
PSON
1
Logic Input
V33
2
Analog Input
V5
3
Analog Input
OPP
4
Analog Input
UVAC
5
Analog Input
NVP
6
Analog Input
V12
7
Analog Input
OP1/OP2 9/8 Analog Output
PG
FB2
VREF2
VREF1
FB1
GND
COMP
IN
10 Logic Output
11 Analog Output
12 Analog Input
13 Analog Input
14 Analog Output
15 Supply
16 Analog Output
17 Analog Input
SS
RI
VCC
18 Analog Input
Program Analog
19
Input
20 Supply
Function
Remote on/off logic input for CPU or controller. Turn on/off the PWM output after the 7.5ms
/ 26ms delay.
PSON = 0, the main SMPS is operational.
PSON =1, the main SMPS is off and the latch is reset.
3.3V over-voltage/under-voltage control sense input.
5V over-voltage/under-voltage control sense input.
Over-power sense input. This pin is connected to driver transformer or the Output of current
transformer. When not in use, this pin should be grounded.
AC fail detection, detect main AC voltage under-voltage and/or failure.
The protection input for negative Output, such as –12V and/or –5V. Trip voltage = 2.1V.
12V over-voltage/under-voltage control sense input.
The totem-pole Output drivers of push-pull PWM. The Output are enabled (low) only when
the NAND gate inputs are high. The maximum duty cycle on an Output (OP1 or OP2) is
46%.
Power-good logic output, 0 or 1 (open-collector). PG = 1, the power is good for operation.
The PG delay is 300ms.
Output for second converter regulation loop.
Reference comparison input for second converter regulation loop, 2.5V.
Reference comparison input for first converter regulation loop, 2.5V.
Output for first converter regulation loop.
Ground.
Error amplifier Output and the input of the PWM comparator.
The negative input of error amplifier. The positive input of error amplifier is a 2.5V reference
voltage.
The soft-start, settable through an external capacitor. The current source output at this pin
is 8µA and the voltage is clamped at 2.5V.
Connected to external resistor for the reference setting. RI = 75kΩ.
Supply voltage. 4.5V ~ 5.5V connected to 5V-standby.
© System General Corp.
Version 1.0.1 (IAO33.0072.B0)
-5-
www.sg.com.tw • www.fairchildsemi.com
September 25, 2007
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