SG6905SZ Fairchild Semiconductor, SG6905SZ Datasheet - Page 8

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SG6905SZ

Manufacturer Part Number
SG6905SZ
Description
IC PWM CTLR PFC/FLYBACK 20-SOP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of SG6905SZ

Mode
Average Current
Frequency - Switching
65kHz
Current - Startup
10µA
Voltage - Supply
16 V ~ 20 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2007 Fairchild Semiconductor Corporation
SG6905 • Rev. 1.1.2
Electrical Characteristics
V
PFC Stage
Voltage Error Amplifier Section
Current Error Amplifier Section
Peak Current Limit Section
OVP
UVP
Symbol
ΔOVP
V
V
I
DD
V
MR1
t
t
V
I
I
t
CMRR
OVP-PFC
t
UVP-PFC
FBPFC-H
OUT-HIGH
FBPFC-L
OUT-LOW
LEB-PFC
PD-PFC
V
OFFSET
=15V, T
FBHIGH
BW
GM
V
Av
A
REF
I
I
I
, I
H
P
PK
FBPFC
FBPFC
L
I
MR2
PFC
A
=25°C, unless otherwise noted.
Reference Voltage
Open-Loop Gain
PFC Over-Voltage-Protection on FBPFC
PFC Feedback-Voltage-Protection
Hysteresis
Debounce Time of PFC OVP
PFC Feedback Under Voltage Protection
Debounce Time of PFC UVP
Trans-Conductor
Maximum Source Current
Maximum Sink Current
FB Open Voltage
Input Offset Voltage ((-) > (+))
Open-Loop Gain
Unit Gain Bandwidth
Common-Mode Rejection Ratio
Output High Voltage
Output Low Voltage
Reference Current Source
Maximum Source Current
Maximum Sink Current
Constant Current Output
Peak Current Limit Threshold Voltage
Cycle-by-Cycle Limit (V
Propagation Delay
Leading-Edge Blanking Time
Parameter
SENSE
< V
PK
)
V
R
(I
R
V
V
MR
CM
RMS
RMS
I
I
=24kΩ
=24KΩ
Conditions
=20+I
=0 to +1.5V
=1.05V
=3V
8
RI
*0.8)
V
Min.
2.95
0.15
0.35
0.15
0.15
0.35
6.0
3.2
REF
60
40
40
35
28
28
50
90
70
3
Continued on the following page…
+
V
Typ.
3.00
0.25
0.40
0.25
0.20
0.40
100
120
6.3
1.5
REF
60
90
70
70
50
34
34
60
70
8
+
V
Max.
3.05
0.30
0.45
0.30
0.25
0.45
120
120
120
110
200
170
6.6
0.2
REF
65
70
www.fairchildsemi.com
+
Units
mho
MHz
mV
mV
mA
mA
μA
μA
dB
dB
μA
μA
db
μs
μs
ns
ns
V
V
V
V
V
V
V
V

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