SG6905SZ

Manufacturer Part NumberSG6905SZ
DescriptionIC PWM CTLR PFC/FLYBACK 20-SOP
ManufacturerFairchild Semiconductor
SG6905SZ datasheet
 

Specifications of SG6905SZ

ModeAverage CurrentFrequency - Switching65kHz
Current - Startup10µAVoltage - Supply16 V ~ 20 V
Operating Temperature-40°C ~ 105°CMounting TypeSurface Mount
Package / Case20-SOIC (7.5mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
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Electrical Characteristics
V
=15V, T
=25°C, unless otherwise noted.
DD
A
Symbol
Parameter
PFC Stage
Voltage Error Amplifier Section
V
Reference Voltage
REF
Av
Open-Loop Gain
OVP
PFC Over-Voltage-Protection on FBPFC
FBPFC
PFC Feedback-Voltage-Protection
ΔOVP
PFC
Hysteresis
t
Debounce Time of PFC OVP
OVP-PFC
UVP
PFC Feedback Under Voltage Protection
FBPFC
t
Debounce Time of PFC UVP
UVP-PFC
GM
Trans-Conductor
I
Maximum Source Current
FBPFC-L
I
Maximum Sink Current
FBPFC-H
V
FB Open Voltage
FBHIGH
Current Error Amplifier Section
V
Input Offset Voltage ((-) > (+))
OFFSET
A
Open-Loop Gain
I
BW
Unit Gain Bandwidth
CMRR
Common-Mode Rejection Ratio
V
Output High Voltage
OUT-HIGH
V
Output Low Voltage
OUT-LOW
I
, I
Reference Current Source
MR1
MR2
I
Maximum Source Current
L
I
Maximum Sink Current
H
Peak Current Limit Section
I
Constant Current Output
P
Peak Current Limit Threshold Voltage
V
PK
Cycle-by-Cycle Limit (V
t
Propagation Delay
PD-PFC
t
Leading-Edge Blanking Time
LEB-PFC
© 2007 Fairchild Semiconductor Corporation
SG6905 • Rev. 1.1.2
Conditions
V
=0 to +1.5V
CM
R
=24kΩ
I
(I
=20+I
*0.8)
MR
RI
R
=24KΩ
I
V
=1.05V
RMS
< V
)
V
=3V
SENSE
PK
RMS
8
Min.
Typ.
Max.
Units
2.95
3.00
3.05
V
60
db
V
+
V
+
V
+
REF
REF
REF
V
0.15
0.25
0.30
60
90
120
mV
40
70
120
μs
0.35
0.40
0.45
V
40
70
120
μs
35
50
65
mho
28
34
μA
28
34
μA
6.0
6.3
6.6
V
8
mV
60
dB
1.5
MHz
70
dB
3.2
V
0.2
V
50
70
μA
3
mA
0.15
0.25
0.30
mA
90
100
110
μA
0.15
0.20
0.25
V
0.35
0.40
0.45
V
200
ns
70
120
170
ns
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