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TDA4800

Vertical deflection circuit for monitor applications

Philips Electronics 

Philips Semiconductors

Vertical deflection circuit for monitor

applications

Product specification

TDA4800

FEATURES

• Fully integrated, few external components

• RC oscillator with wide sync range of 1 : 3 (e.g.

50 to 150 Hz)

• Synchronization by positive or negative going sync

pulse

• Blanking pulse duration is determined externally

• Dual frequency criterion for automatic amplitude

switch-over (e.g. 50 to 60 Hz)

• Guard circuit for screen protection

• Sawtooth generator with buffer stage supplied by

external voltage

• Preamplifier

• Power output stage with thermal and SOAR protection

• Flyback generator

• Internal voltage stabilizer.

GENERAL DESCRIPTION

The TDA4800 is an integrated circuit for vertical deflection

primarily in monitors (and TV receivers). The complete

circuit consists of 11 main functional blocks as shown in

Fig.1.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

VP1

VP2

IP

I7(p-p)

fsync

V3

V3

Tamb

supply voltage (pin 6)

supply voltage (pin 10)

supply current (pins 6 and 10)

output current (peak-to-peak value)

picture frequency

positive sync input pulse

negative sync input pulse

operating ambient temperature

Notes

1. Measured in Fig.4.

2. fo = 45 Hz (fsync(max) = 3fo).

3. Ptot = 3.6 W for Rth(j-a) = 20 K/W.

CONDITIONS

note 1

notes 1 and 2

note 3

MIN.

10

10

−

−

−

1.0

−0.5

−20

TYP.

−

−

215

−

−

−

−

−

MAX.

30

45

−

2.6

135

6.0

−0.7

+70

UNIT

V

V

mA

A

Hz

V

V

°C

ORDERING INFORMATION

TYPE

NUMBER

TDA4800

NAME

DBS13P

PACKAGE

DESCRIPTION

plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)

VERSION

SOT141-6

1997 Mar 27

2

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