AN-087E Rev.1.0

April-2011

10

FA5526/5527/5528/5536/5537/5538

Fuji Electric Co., Ltd.

http://www.fujielectric.co.jp/products/semiconductor/

8. Characteristic curves

・Unless otherwise specified, Ta=25℃, Vcc=18V

・In defining a current, “+” represents a sink current and “-” a source current.

・The data stated in this chapter are intended for giving typical IC characteristics and not for guaranteeing performance.

Variation Ratio of Switching Frequency (delta fosc)

vs. VCC pin voltage (Vcc)

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

10

15

20

25

30

Vcc (V)

Switching Frequency (fosc) vs. FB pin voltage

0

20

40

60

80

100

120

140

0

0.5

1

1.5

2

2.5

3

VFB (V)

FA5526 / 36

FA5527 / 37

FA5528 / 38

Maximum Duty Cycle (Dmax)

vs. Junction Temperature (Tj)

79.0

79.5

80.0

80.5

81.0

-40 -20

0

20

40

60

80 100 120 140

Tj

（degree）

Variation Ratio of Switching Frequency (delta fosc)

vs. Junction Temperature (Tj)

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-40 -20

0

20

40

60

80

100 120 140

Tj (degree)

Minimum Switching Frequency (fmin) vs. Junction

Temperature (Tj)

0.0

0.5

1.0

1.5

2.0

-40

-20

0

20

40

60

80

100 120 140

Tj

（degree）

Minimum ON Width (Tmin)

vs. Junction Temperature (Tj)

200

300

400

500

600

700

800

-40

-20

0

20

40

60

80

100 120 140

Tj

（degree）

FA5528 / 38

FA5527 / 37

FA5526 / 36