1

4

5

BY252

C1

C2

D1

C3

220

µF

220

µF

680mF

63

2

7

R1

12k

Ω

V

S

C4

0.22

R7

1.5

Ω

C6

4.7

R3

R4

R2

10k

Ω

27k

Ω

12k

Ω

C5

R5

R6

Ly

Iy

10mH

Ry

1000

330

Ω

5.9

Ω

to

V

i

to

GND

IN

to

t

fl y

7

V

*

RE F

Recommended for V

filtering

V

RE F

1

Ω

25V

=2V

20ms

Figure 2 : AC Test Circuit

MOUNTING INSTRUCTIONS

The power dissipated in the circuit must be re-

moved by adding an external heatsink.

Thanks to the HEPTAWATT

the heatsink is very simple, a screw or a compres-

sion spring (clip) being sufficient.

Between the heatsink and the package it is better

to insert a layer of silicon grease, to optimize the

thermal contact ; no electrical isolation is needed

between the two surfaces, since the tab is con-

nected to Pin 4 which is ground.

Figure 3 : Mounting Examples

TDA9302H

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