SG6903SZ Fairchild Semiconductor, SG6903SZ Datasheet - Page 6

• Manufacturer Part Number: SG6903SZ
• Description: IC PFC CONTROLLER 16SOIC
• Manufacturer: Fairchild Semiconductor

Specifications of SG6903SZ

• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Output Voltage: 1.5 V to 8 V
• Switching Frequency: 65 KHz
• Operating Temperature Range: - 20 C to + 85 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 83 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Operating Temperature: -
• Frequency - Switching: -
• Mode: -
• Current - Startup: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Green Mode PFC/Flyback-PWM Controller
Oscillator & Green-Mode Operation
Symbol
F
F
RI
RI
RI
VRMS for UVP and RANGE
Symbol
V
V
t
t
V
V
t
V
I
PFC stage
Voltage Error Amplifier
Symbol
V
Av
Z
OVP
△OVP
t
V
G
V
G
I
I
UVP
t
© System General Corp.
Version 1.0.1 (IAO33.0061.B0)
D-PWM
UVP
RANGE
OH
OVP-FBPFC
FBPFC-L
FBPFC
UVP-FBPFC
OSC
OSC-MINFREQ
o
RMS-UVP-1
RMS-UVP-2
RMS-H
RMS-L
OL
REF
FBPFC-H
FBPFC-L
FBPFC-H
FBPFC-L
OPEN
SHORT
FBPFC
FBPFC
-
H
FBPFC
Parameter
PWM Frequency
Minimum Frequency in Burst Mode
RI Pin Resistance Range
RI Pin Open Protection
If RI> RI
RI Pin Short Protection
If RI< RI
Parameter
RMS AC Voltage Under Voltage Protection
Threshold (with t
Recovery level on VRMS
When UVP Occurs ,The interval from PFC off
to PWM off
Under Voltage Protection Delay Time (No
delay for startup)
High V
Low V
Range-Enable Delay Time
Output Low Voltage of RANGE Pin
Output High Leakage Current of RANGE Pin RANGE = 5V
Parameter
Reference Voltage
Open-loop Gain
Output Impedance
PFC Over Voltage Protection
PFC Feedback Voltage Protection Hysteresis
Debounce Time of PFC OVP
Clamp-High Feedback Voltage
Clamp-High Gain
Clamp-Low Feedback Voltage
Clamp-Low Gain
Maximum Source Current
Maximum Sink Current
PFC Feedback Under Voltage Protection
Debounce Time of PFC UVP
RMS
RMS
open
short
Threshold for RANGE Comparator
Threshold for RANGE Comparator
, SG6903 will turn off
, SG6903 will turn off
UVP
delay)
Test Conditions
RI = 24KΩ
RI = 24KΩ
Test Conditions
I
Test Conditions
o
- 6 -
= 1mA
www.sg.com.tw • www.fairchildsemi.com
Min.
62
18
15
Min.
0.75
V
P-1
6V
t
9
150
1.9
1.55
140
40
UVP-Min
Min.
2.95
3.2
60
40
3.1
2.75
1.5
70
0.35
RMS-UV
+0.1
Product Specification
+
Typ.
65
20
200
2
Typ.
0.8
V
P-1
8V
195
1.95
1.6
170
Typ.
3
60
110
3.25
90
70
3.15
0.5
2.85
6.5
2
110
0.4
70
RMS-UV
+0.1
September 28, 2007
Max.
0.85
V
P-1
V
t
+14
240
2.0
1.65
200
0.5
50
Max.
68
22
47
Max.
3.05
3.3
120
120
3.2
2.9
0.45
120
UVP-Min
RMS-UV
+0.2
SG6903
Unit
V
V
ms
ms
V
V
ms
V
nA
Unit
V
dB
KΩ
V
mV
µs
V
µA/mV
V
mA/m
V
mA
µA
V
µs
Unit
KHz
KHz
KΩ
KΩ
KΩ