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PDF TDA8140 Data sheet ( Hoja de datos )
| Número de pieza | TDA8140 | |
| Descripción | HORIZONTAL DEFLECTION POWER DRIVER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TDA8140
HORIZONTAL DEFLECTION POWER DRIVER
. CONTROLLED DRIVING OF THE POWER
TRANSISTOR DURING TURN ON AND OFF
PHASE FOR MINIMUM POWER DISSIPA-
TION AND HIGH RELIABILITY
. HIGH SOURCE AND SINK CURRENT CAPA-
BILITY
. DISCHARGE CURRENT DERIVED FROM
PEAK CHARGE CURRENT
. CONTROLLED DISCHARGE TIMING
. DISABLE FUNCTION FOR SUPPLY UNDER
VOLTAGE AND NONSYNCHRONOUS OP-
ERATION
. PROTECTION FUNCTION WITH HYSTERE-
SIS FOR OVERTEMPERATURE
. OUTPUT DIODE CLAMPING
. LIMITING OF THE COLLECTOR PEAK CUR-
. RENT OF THE DEFLECTION POWER TRAN-
SISTOR DURING TURN ON PERIOD
SPECIAL REMOTE FUNCTION WITH DELAY
TIME TO SWITCH THE OUTPUT ON
The current source characteristic of this device is
adapted to the on-linear current gain behaviour of
the power transistor providing a minimum power
dissipation. The TDA8140 is internally protected
against short circuit and thermal overload.
POWERDIP (8 + 8)
(Plastic Package)
ORDER CODE : TDA8140
DESCRIPTION
The TDA 8140 is a monolithic integrated circuit de-
signed to drive the horizontal deflection power tran-
sistor.
PIN CONNECTIONS
OUTPUT
VCC
SENSE IN
SENSE GND
CEXT
SPECIAL REMOTE STANDBY
CONTROL INPUT
PROTECTION AND REMOTE
STANDBY INPUT
1
2
3
4
5
6
7
8
September 1993
16
15
14
13
COMMON GND
12
11
10
9
1/10
1 page  
Figure 3 : P.C. Board and Components Layout of the Figure 2 (1 : 1 scale)
STANDBY
TDA8140
Rf
D1 C s
Rs
Co Lo
OUT
BU
Rb Ro
Cb
Ca
+12V
COMPONENTS LIST FOR TYPICAL APPLICATION
CRT
Ca
Ro
Co
Lo
22"/26" 100°
47 µF
27 Ω 2W
220 µF
10 µH
14"/20" 90°
47 µF
27 Ω 1 W
220 µF
10 µH
CRT
Rb
Cb
Rs
Cs
22"/26" 100°
4.7 Ω
47 nF
0.15 Ω
1 nF
14"/20" 90°
4.7 Ω
47 nF
0.1 Ω
1 nF
APPLICATION INFORMATION
The conventional deflection system is shown in Figure 4. The driving circuit consists of a bipolar power
transistor driven by a transformer and a medium power element plus some passive components.
Figure 4 : Conventional Horizontal Deflection System for TVs
VCC +
DRIVING CIRCUIT
IB
IC ID
HORIZONTAL
TRANSFORMER
YOKE
DEFLECTION CIRCUIT
V IN
5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TDA8140.PDF ] | |
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