SGP400 Datasheet, PDF (5/15 Pages) Fairchild Semiconductor – Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback

Product Specification
Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SGP400
Current Sense Section
Symbol Parameter
tPD
Propagation Delay
VSTHVA
Current Limiting Valley Threshold Voltage
VSTHFL
Current Limiting Flat Threshold Voltage
tLEB
Leading-Edge Blanking Time
Test Condition Min.
VDD=18V
VDD=15V
VDD=10V
VDD=18V
VDD=15V
VDD=10V
210
Typ.
100
0.84
0.76
0.62
0.98
0.88
0.71
310
Max.
150
410
Unit
ns
V
V
V
V
V
V
ns
VLIMIT Ramp
TON
TOFF
VSTHFL
High-Line
Sense Voltage
Low-Line Sense
Voltage
VSTHVA
T1
T2
Oscillator Section
Symbol Parameter
FOSC
Frequency
Center Frequency
Hopping Range
tHOP
FOSC-G
VFB-N
VFB-G
SG
FDV
FDT
Hopping Period
Green-Mode Frequency
Green-Mode Entry FB Voltage
Green-Mode Ending FB Voltage
Green-Mode Modulation Slope
Frequency Variation vs. VDD Deviation
Frequency Variation vs. Temperature Deviation
Test Condition
VDD=10 to 20V
TA=-20 to 85°C
Min.
62
±4.1
4.1
19.5
2.4
40
0V
Typ.
65
±4.6
4.0
22.0
2.6
VFB-N-0.7
70
1.5
Max.
68
±5.1
5.1
24.5
2.8
100
2
5.0
Unit
KHz
ms
KHz
V
V
Hz/mV
%
%
© System General Corp.
Version 1.0.1 (IAO33.0084.B0)
-5-
www.sg.com.tw • www.fairchildsemi.com
September 24, 2007