TDA8174A Datasheet, PDF (3/5 Pages) STMicroelectronics – VERTICAL DEFLECTION CIRCUIT

TDA8174A - TDA8174AW
DC ELECTRICAL CHARACTERISTICS (continued
Symbol
Parameter
Test Conditions
Min.
V₄
dV4/Vs
dV₄/d_I4
V₅
VD11-10
V_D1-2
G_V
V_fs
V_{1 1}
V₃
I₃
t₃
Reference Voltage
Reference Voltage Drift Versus Vs
Reference Voltage Drift Versus I₄
Internal Reference Voltage
Diode Fwd Voltage
Diode Fwd Voltage
Output Stage Open Loop Gain
V_10-11 Saturation Voltage
Pin 11 Scanning Voltage
Trigger Input Threshold
Trigger Input Bias Current
Trigger Input Width
–I₄ = 20µA
Vs = 10V to 35V
I₄ = 10µA to 30µA
ID = 1.2A
I_D = 1.2A
f = 100Hz
–I₁₁ = 1.2A
I₁₁ = 20mA
(see note 1)
V_IN = V₃- 0.2V
(see note 2)
6.3
4.25
2.6
20
Notes : 1. The trigger input circuit can accept, with a metal option, positive and negative going input pulses.
2.
Th
=
1.2 ⋅ TS
VPP
where : TS is the vertical period and VPP is ramp amplitude at Pin7
Typ.
6.6
1
1.5
4.45
2.2
2.2
60
1.5
1.7
3.0
60
Max.
6.9
2
2
4.65
3
3
2.5
3
3.4
30
Th
Unit
V
mV/V
mV/µA
V
V
V
dB
V
V
V
µA
µS
AC ELECTRICAL CHARACTERISTICS (VS = 24V ; Tamb = 25^oC unless otherwise specified)
Symbol
V_s
I1
I_s
V₁
V₈
T_js
Parameter
Operating Supply Voltage Range
Peak-to-peak Operating Current Range
Supply Current
Flyback Voltage
Sawtooth Pedestall Voltage
Junction Temp. for Thermal Shutdown
Test Conditions
I_y = 2.4A_pp
I_y = 2.4A_pp
Min. Typ. Max. Unit
10
30
V
0.4
A
315
mA
51
V
1.85
V
145
°C
APPLICATION CIRCUIT
0.1µF
470µF
V_S
1N4001
10µF
10
TDA8174A
5
VOLTAGE
REGULATOR
2
FLYBACK
GENERATOR
100µF
35V
11
R3
TRIG-INP ₃
RAMP
GENERATOR
CLOCK _POWER
PULSE _AMP.
4
180kΩ
BUFFER
STAGE
7
8
47nF
THERMAL
PROTECTION
9
6
220kΩ
1
2.2Ω
0.22µF
Rb
1.2kΩ
1kΩ
22µF
330Ω
Ra
2.4kΩ
1500µF
Ry = 9.6Ω
YOKE Ly = 24.6mH
Iy = 1.2App
1.2Ω
3/5