TDA1675A datasheet(10/11 Pages) STMICROELECTRONICS

10 / 11 page

0.5

1.5

0.5

1.5

V1H (V)

VS = 35V

IY (App)

Figure 8 :

Output Saturation Voltage to Supply

versus Output Peak Current

when a flyback pulse has been generated. If the

flyback pulse is absent (short cirucit or open cirucit

of the yoke), the blanking output remains high so

allowing the CRT protection.

Pin 13

is an open collector output where the

blanking pulse is available.

Voltage regulator

The main supply voltage VS, is lowered and

regulated internally to allow the required reference

voltages for all the above described blocks.

Pin 14

is the main supply voltage input VS

(positive).

Pin 8

is the GND pin or the negative input of VS

0.5

1.5

0.5

1.5

VS = 35V

IY (App)

(V)

Figure 7 :

Output Saturation Voltage to Ground

vs. Peak Output Current

-50

150

100

Tamb (˚C)

th = 8˚C

th =

4˚C

2˚C

Ptot (W)

Figure 9 :

Maximum allowable Power Dissipation

vs. Ambient Temperature

Figure 10 : Mounting Examples

MOUNTING INSTRUCTIONS

The power dissipated in the circuit must be

removed by adding an external heatsink. Thanks

to the MULTIWATT ® package attaching the

heatsink is very simple, a screw or a compression

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.

TDA1675A

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