Spec. No. : C543F5
Issued Date : 2004.02.27
Revised Date :
CYStech Electronics Corp.
Page No. : 7/10
Switch Saturation Voltage
Efficiency
1.6
1.4
1.2
1
95
90
85
80
75
70
65
60
LOAD
I
= 3A
-55℃
15V OUT
LOAD
I
= 0.2A
0.8
0.6
0.4
0.2
0
5V
25℃
LOAD
I
= 3A
150℃
LOAD
I
= 0.2A
40
J
T = 25℃
0
10
20
30
50
0
0.5
1
1.5
2
2.5
3
Switch Current (A)
Input Voltage (V)
Oscillator Frequency
Minimum Operating Voltage
8
6
5
4.5
4
Adjustable version only
Normalized at 25℃
4
3.5
3
2
0
2.5
2
-2
-4
-6
-8
IN
V = 40V
1.5
1
OUT
V
≒1.23V
= 0.5A
LOAD
I
IN
V = 12V
0.5
0
-75 -50 -25
0
25 50 75 100 125 150
-50
-25
0
25
50
75
100 125
Junction Temperature (℃)
Junction Temperature (℃)
Feedback Voltage vs Duty Cycle
Quiescent Current vs Duty Cycle
20
15
10
5
20
17.5
15
Adjustable version only
Adjustable version only
LOAD
I
= 0.5A
LOAD
I
= 0.5A
12.5
10
IN
V =40V
IN
V =7V
0
7.5
5
-5
IN
V =40V
-10
-15
-20
IN
V =7V
2.5
0
0
20
40
60
80
100
0
20
40
60
80
100
Duty Cycle (%)
Duty Cycle (%)
PL2576-XXXF5
CYStek Product Specification
CYSTEKEC [ CYSTECH ELECTONICS CORP. ]
