FA5546 Datasheet, PDF (10/27 Pages) Fuji Electric – Switching Power Supply Control IC

FA5546/47
7. Characteristics curve
・In case nothing is specified otherwise: Ta=25℃, VCC＝18V
・“+” shows sink and “–“ shows source in current prescription.
・Data written here show the typical characteristics of the IC and do not guarantee the characteristics.
Oscillation Frequency (Fosc)
vs. Junction temperature(Tj)
62
61
60
59
58
-50
0
50
100
Tj (℃)
Oscillation Frequency (FOSC) changing rate
vs. Junction temperature(Tj)
6
4
2
0
-2
-4
-6
150
-50
0
50
100
150
Tj (℃)
Oscillation Frequency (Fosc)
vs. Power supply voltage (VCC)
62
61
60
59
58
5
10
15
20
25
Voltage (V)
Oscillation Frequency (Fosc) changing rate
vs. Power supply voltage
0.2
0.1
0
-0.1
-0.2
30
5
10
15
20
25
30
Voltage (V)
FB pin voltage at frequency drop started (Vfbm)
vs. Junction temperature (Tj)
1.4
LAT pin source current (Ilat)
vs. Junction temperature (Tj)
-64
1.3
-66
-68
1.2
-70
1.1
-72
1.0
-74
VLAT=1.1V
0.9
-50
-76
0
50
100
150
-50
Tj (℃)
0
50
100
150
Tj (℃)
Fuji Electric Co., Ltd.
AN-027E Rev.0.4
April -2011
10
http://www.fujielectric.co.jp/products/semiconductor/