SYNC. DET.

THERMAL

PROTECTION

I

B1

S

V

I

B2

C

V

SPECIAL

REMOTE

STANDBY

CONTROL

IN

PROTECTION AND

REMOTE STANBY INPUT

C

1nF

100k

Ω

OUT

SENSE

IN

GND

27

Ω

220

µF

BU508

22nF

4.7

Ω

10

µH

0.15

Ω

V

H

R

S

V

&

7

8

6

5

4

2

3

TDA8143

1

9

BLOCK DIAGRAM

PIN FUNCTIONS

Pin

Name

Function

1

Power Ground

Common Ground

2

Ouptut

Device Output

Supply Voltage

4

Sense Input

Input voltage that determines output current.

5

Sense GND

Reference Ground for Input Voltage at SENSE INPUT.

Capacitor between this terminal and SENSE GROUND determines the current

7

Special Remote/Standby

independent from CONTROL INPUT (2nd priority).

8

Control Input

High level at this input switches the BU508 off, low level switches the BU508 on.

9

Protection and Remote

Standby Input

A high level at this input switches the BU508 off independent from all other inputs

(1st priority).

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

DC Supply Voltage

18

V

Output Current

Internally Limited

Power Dissipation

Internally Limited

Storage and Junction Temperature

– 40, + 150

°C

Operating Temperature

0, + 70

°C

THERMAL DATA

Symbol

Parameter

Value

Unit

Thermal Resistance Junction-ambient

Max.

70

°C/W

Thermal Resistance Junction–case

Max.

10

°C/W

TDA8143

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