SG6901 Fairchild Semiconductor, SG6901 Datasheet - Page 7

• Manufacturer Part Number: SG6901
• Description: The highly integrated SG6901A is designed for power supplies with boost PFC and flyback PWM
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6901A • Rev. 1.0.2
Electrical Characteristics
V
VDD SECTION
OSCILLATOR SECTION
VRMS SECTION (for UVP and RANGE)
DD
V
V
Symbol
t
R
V
V
D-VDDOVP
R
RMS-UVP-1
RMS-UVP-2
V
V
V
V
t
t
=15V and T
I
I
D-PWM
RANGE
DD-OVP
I-SHORT
DD-OP
DD-OFF
DD-ST
f
t
I-OPEN
V
DD-OP
DD-ON
RMS-H
RMS-L
I
OSC
UVP
R
OH
OL
I
Continuously Operating Voltage
Startup Current
Operating Current
Start Threshold Voltage
Minimum Operating Voltage
V
Debounce Time of V
PWM Frequency
RI Pin Resistance Range
RI Pin Open Protection
RI Pin Short Protection
RMS AC Voltage Under-Voltage
Protection Threshold (with t
Recovery Level on V
When UVP Occurs, Interval from PFC
Off to PWM Off
Under-Voltage Protection Delay Time
High V
Comparator
Low V
Comparator
Range-Enable Delay Time
Output Low Voltage of RANGE Pin
Output High Leakage Current of
RANGE Pin
A
DD
=25°C unless otherwise specified.
OVP Threshold
RMS
RMS
Threshold for RANGE
Threshold for RANGE
Parameter
DD
RMS
OVP
UVP
delay)
0V < V
V
OPWM Open; R
R
If R
Turns Off
If R
SG6901A Turns Off
I
RANGE=5V
o
DD
=1mA
I
=24KΩ
7
I
I
=15V; OPFC,
>R
<R
Conditions
DD
I-OPEN
I-SHORT
< V
, SG6901A
DD-ON
,
I
=24KΩ
V
RMS-UVP-
0.16V
Min.
Min
23.5
15.6
0.75
1.90
1.55
t
150
140
UVP-
11
62
1
9
8
+
+9
Continued on the following page…
UVP-1
0.18V
Typ.
V
24.5
0.80
1.95
1.60
200
195
170
10
12
10
65
RMS-
6
2
+
Min
UVP-1
Max.
V
0.2V
25.5
47.0
0.85
t
2.00
1.65
240
200
0.5
UVP-
20
25
10
13
11
25
68
50
RMS-
+14
www.fairchildsemi.com
+
Units
KHz
mA
KΩ
KΩ
KΩ
ms
ms
ms
µA
nA
µs
V
V
V
V
V
V
V
V
V