M54646AP

Rev.1.0, Sep.19.2003, page 5 of 8

If new trigger occurs during tOFF, it is ignored.

(5) Analog control

Stepless output current level variation is available by continuously changing voltage V

comparator.

A: Recommended operational range

B: External Schottky diode to be connected between output

terminal and power terminal as well as between output terminal

and GND.

✽

This regulation is for temporary electric power use. For

continuous use, be sure power dissipation does not go beyond

package’s operational range.

θj-c = 8°C/W

A: Mounted on 25cm glassfiber epoxy resin circuit board with one

side copper-foiled

θc-a = 42°C/W

B: With aluminum heat sink (1t) 10cm

θc-a = 25°C/W

C: With aluminum heat sink (1t) 100cm

θc-a = 10°C/W

°C

2

2

2

AREA OF SAFE OPERATION

1.0

0.8

0.6

0.4

0

102030

40

45 50

A

B

B

0

0.2

THERMAL DERATING

10.0

8.0

6.0

4.0

0

25

50

75

100

A

B

AMBIENT TEMPERATURE (

°C)

C

0

2.0