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