TDA4867 View Datasheet(PDF) - Philips Electronics

Part Name

Description

View to exact match

TDA4867

Full bridge current driven vertical deflection booster

Philips Electronics 

Philips Semiconductors

Full bridge current driven vertical

deflection booster

Preliminary specification

TDA4867J

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Flyback generator

IFB(p-p)

VFB-OUTA

maximum current during flyback on

pin VFB (peak-to-peak value)

voltage drop during flyback between

pin VFB and pin OUTA

Vth(OUTA)

switch-on threshold voltage on

pin OUTA

reverse

Idefl = −0.7 A

Idefl = −1.25 A

forward

Idefl = 0.7 A

Idefl = 1.25 A

−

−

2.5

A

−

−2.6 −3

V

−

−3.1 −3.9 V

−

5.2

−

5.7

VP − 1 −

6.1

V

6.9

V

VP + 1 V

Guard circuit (pin GUARD)

VGUARD

IGUARD

Vext

output voltage

output current

external voltage

guard on;

IGUARD = −5 mA

5

6

guard off; IGUARD = 0 −

−

guard on;

VGUARD > 5 V

−5

−

for guard function

0

−

for power save mode; 8.2

−

IGUARD = 0.5 mA

−

V

0.4

V

−

mA

6.5

V

9.5

V

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.

2003 Feb 05

7

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