SG6105 ETC, SG6105 Datasheet - Page 2

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SG6105

Manufacturer Part Number
SG6105
Description
Power Supply Supervisor + Regulator + PWM
Manufacturer
ETC
Datasheet

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Part Number
Power Supply Supervisor + Regulator + PWM
ORDERING INFORMATION
SG6105D
PIN DESCRIPTIONS
©System General Corp.
Version 2.3(IRO33.0011.B0)
Name
VCC
PG
V33
V5
V12
OPP
PSON
NVP
UVAC
COMP
IN
SS
OP1/OP2
FB1
VREF1
FB2
VREF2
RI
GND
Pin
20
10
2
3
7
4
1
6
5
16
17
18
9/8
14
13
11
12
19
15
Type
Supply
Logic output
Analog input
Analog input
Analog input
Analog input
Logic input
Analog input
Analog input
Analog output
Analog input
Analog input
Analog output
Analog output
Analog input
Analog output
Analog input
Program.
Analog input
Supply
Package
20-Pin DIP
Supply voltage. 4.5V ~ 5.5V. It is connected to 5V-standby.
3.3V over-voltage/under-voltage control sense input.
12V over-voltage/under-voltage control sense input.
The protection input for negative output, such as –12V and/or –5V. Trip voltage = 2.1V.
AC fail detection, detect main AC voltage under-voltage and/or failure.
The negative input of error amplifier. The positive input of error amplifier is a 2.5V reference voltage.
Reference comparison input for first converter regulation loop. 2.5V.
Reference comparison input for second converter regulation loop. 2.5V.
Ground.
Function
Power Good logic output, 0 or 1 (open-collector). PG = 1 means that the power is good for operation.
The PG delay is 300 msec.
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.
Remote On/Off logic input for CPU or controller. Turn on/off the PWM Output after the 7.5 msec / 26
msec delay.
PSON = 0 means that the main SMPS is operational.
PSON =1 means that the main SMPS is off and the latch is reset.
Error amplifier output and the input of the PWM comparator.
The soft-start. It is settable through external capacitor. The current source output at this pin is 8uA and
the voltage is clamped at 2.5V.
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%.
Output for first converter regulation loop.
Output for second converter regulation loop.
Connected to external resistor for the reference setting.
RI = 75k ohms.
- 2 -
Product Specification
www.sg.com.tw
June 19, 2003
SG6105

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