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SC6105 View Datasheet(PDF) - Silan Microelectronics

Part Name
Description
View to exact match
SC6105 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
SC6105
(Continued)
Pin No.
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
OP2
OP1
PG
FB2
VREF2
VREF1
FB1
GND
COMP
IN
SS
RI
VCC
Description
The totem-pole output drivers of push-pull PWM. The maximum duty cycle on an
output (OP1 or OP2) is 46%.
The totem-pole output drivers of push-pull PWM.
Power Good logic output, 0 or 1 (open-collector). PG=1 means that the power is
good for operation.
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. It is settable through external capacitor. The current source output at
this pin is 5.7uA and the voltage is clamped at 2.5V.
Connected to external resistor for the reference setting.
Supply voltage. It is connected to 5V-standby.
FUNCTION DESCRIPTION
SC6105 have functions below: AC Power-down Detection, Over Power Protection (OPP), Negative Voltage
Protection, Over-voltage and under-voltage protection, Power-down warning for power good signal, Power good
signal and power-fail lockup, Remote on/off control, Complete pulse width modulation (PWM) control circuitry,
On-chip oscillator, Programmable Soft-Start and so on.
TIMING DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.4 2008.04.17
Page 5 of 9
 

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