1997 Jan 20

2

Philips Semiconductors

Product specification

Vertical deflection power amplifier for

monitors

TDA4861

FEATURES

• Vertical pre-amplifier with differential inputs

• Powerless vertical shift

• Flyback voltage generation suitable for two operating

modes (doubling the supply voltage or external supply

for the short flyback time, this achieves a minimum of

power dissipation)

• Vertical output stage with thermal and SOAR protection

• High deflection frequency up to 140 Hz

• High linear sawtooth signal amplification

• Possibility of guarding the deflection

• Voltage stabilizer.

GENERAL DESCRIPTION

The TDA4861 is a vertical power amplifier for differential

input signals suitable for colour monitor/TV systems with

deflection frequencies up to 140 Hz.

QUICK REFERENCE DATA

Measurements referenced to substrate (pin 6).

ORDERING INFORMATION

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

supply voltage (pin 1)

9

−

30

V

supply voltage (pin 4)

9

−

60

V

flyback supply voltage (pin 8)

9

−

60

V

supply current (pin 1)

−−

10

mA

supply quiescent current (pin 4)

−

9

−

mA

input voltage (pins 2 and 3)

1.6

−

deflection output current (peak-to-peak value; pin 5)

−−

2.8

A

operating ambient temperature

−20

−

+75

°C

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA4861

SIL9P

plastic single in-line power package; 9 leads

SOT131-2