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Product Specification
Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
© System General Corp.
- 6 -
www.sg.com.tw
Version 1.0(IRO33.0002.B3)
Dec.29, 2003
Output Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
DCYMAX
Maximum Duty Cycle
70
75
80
%
Bnk
Leading Edge Blanking Time
310
ns
VOL
Output Voltage Low
VDD = 15V, IO = 10mA
1.5
V
VOH
Output Voltage High
VDD = 15V, IO = 10mA 8
V
TR
Rising Time
VDD = 15V, CL = 1nF
200
ns
TF
Falling Time
VDD = 15V, CL = 1nF
80
ns
VCLAMP
Output Clamp Voltage
VDD = 20V
16.7
18
V
Over Temperature Protection (OTP)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Temp-Off
Protection Junction Temperature
*1
150
°C
Temp-Restart
Restart Junction Temperature
*2
130
°C
*1When activated, the output is disabled and the latch is turned off.
*2This is the threshold temperature for enabling the output again and resetting the latch, after over temperature protection has been
activated.
VDD Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VDD ON
Turn-On Threshold Voltage
16
17
18
V
VDD OFF
Turn-Off Threshold Voltage
7.5
8
8.5
V
IDD ST
Startup Current
VDD = 15V
5
30
uA
IDD OP
Operating Supply Current
VDD = 15V
GATE is Open
3.6
6
mA
VDD CLAMP
Zener Diode Breakdown Voltage
IDD = 10mA
28
30
V