TDA4867J datasheet(7/14 Pages) PHILIPS

7 / 14 page

2003 Feb 05

Philips Semiconductors

Preliminary speciﬁcation

Full bridge current driven vertical

deﬂection booster

TDA4867J

Notes

1. If VFB is between 40 and 60 V a decoupling capacitor CFB =22 µF (between pin VFB and pin GND) and a resistor

RFB = 100 Ω (between pin VFB and flyback supply voltage) are required (see Fig.6).

2. Differential input current Ii(dif) =IINP − IINN.

3. Input resistance is 500

Ω.

4. Required VP depends on the impedance of the deflection yoke.

5. Deviation of the output slope at a constant input slope.

Flyback generator

IFB(p-p)

maximum current during ﬂyback on

pin VFB (peak-to-peak value)

−−

2.5

VFB-OUTA

voltage drop during ﬂyback between

pin VFB and pin OUTA

reverse

Idefl = −0.7 A

−−2.6

−3V

Idefl = −1.25 A

−−3.1

−3.9

forward

Idefl = 0.7 A

−

5.2

6.1

Idefl = 1.25 A

−

5.7

6.9

Vth(OUTA)

switch-on threshold voltage on

pin OUTA

VP − 1

−

VP +1

Guard circuit (pin GUARD)

VGUARD

output voltage

guard on;

IGUARD = −5mA

−

guard off; IGUARD =0

−−

0.4

IGUARD

output current

guard on;

VGUARD >5V

−5

−−

Vext

external voltage

for guard function

−

6.5

for power save mode;

IGUARD = 0.5 mA

8.2

−

9.5

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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