LD7575

6

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7575-DS-04b November 2009

Note: The OLP delay time is proportional to the period of switching cycle.

So that, the lower RT value will set the higher

switching frequency and the shorter OLP delay time.

Typical Performance Characteristics

Temperature (

°C)

Fig. 1 HV Current Source vs. Temperature (HV=500V, Vcc=0V)

0.7

0.9

1.1

1.3

1.5

-40

0

40

80

120 125

Temperature (

°C)

0.85

0.86

0.87

0.88

0.89

0.90

-40

0

40

80

120 125

Fig. 3 UVLO (on) vs. Temperature

Temperature (

°C)

14.0

14.8

15.6

16.4

17.2

18.0

-40

0

40

80

120 125

Temperature (

°C)

Fig. 4 UVLO (off ) vs. Temperature

8

9.6

10.4

12

8.8

-40

0

40

80

120 125

11.2

Fig. 5 Frequency vs. Temperature

Temperature (

°C)

-40

60

62

64

66

68

70

0

40

80

120 125

Temperature (

°C)

Fig. 6 Green Mode Frequency vs. Temperature

16

18

20

22

24

26

-40

0

40

80

120 125