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KA2142C
Vertical Deflection Output Circuit
Features
* * * * * * High output current Pump - up circuit Low dissipation Minimum number of external parts required Direct drive to the deflectin coils Internal thermal shutdown circuit
Description
The KA2142C is a monolithic linear IC designed for color TV and monitor vertical deflection output. It is intended for direct drive of the deflection coils with a high efficiency.
10-SIP H/S
Applications
* Power Amplifier * Thermal Protection * Flyback Generator
Internal Block Diagram
Vcc(L)
+ +
Vcc(H) 2 9 4
FLYBACK GENERATOR
Sawtooth IN 1 Vref 10
+ -
PRE AMP
DRIVE STAGE
OUTPUT STAGE
6
THERMAL SHUTDOWN
D.Y
5
+
+
Rev. 1.0.0
(c)2001 Fairchild Semiconductor Corporation
KA2142C
Pin Assignments
C KA2142A
1 2 3 4 5 6 7
Pin Number 1 2 3 4 5 6 7 8 9 10
Symbol Vin ( - ) Vcc(L) F.G GND VO Vcc(H) Vin ( + )
I/O I I O O I I
Pin Function Descrition Inverting Input Supply Voltage N.C. Flyback Generator Ground Output N.C. N.C. Output Stage Supply Voltage Non-Inverting Input
2
KA2142C
Pin Definitions
Pin Number Pin Name Waveform Equivalent Circuit
vcc
1
Inverting Input
1
2
Voltage Supply
DC
-
vCC 4 Flyback Generator
4
5
Ground
DC
-
vCC 6 Output Voltage
6
9
Output Stage Voltage Supply
Vs
2Vs
-
vcc 10 Non-Inverting Input DC
10
3
KA2142C
Absolute Maximum Rating ( Ta = 25oC )
Parameter Supply Voltage Flyback Peak Voltage Flyback Generator Voltage Input Voltage Peak - to - Peak Output Current* Peak - to - Peak Flyback Current ( f = 50 or 60Hz, Tfb 1.5mS ) Total Power Dissipation ( Ta = 25oC ) Storage Temperature Range Operating Ambient Temperature
* Maximum output peak to peak current in TV or Monitor set.
Symbol Vcc(L) V6, V9 V6 V1, V10 Io(p-p) I4(p-p) PD Tstg Topt
Value 35 70 35 V cc(L) - 0.5 3 3 15 -40 ~ +150 -25 ~ +70
Unit V V V V A A W
o
C
oC
Thermal Data
Parameter Thermal Resistance Between Junction and Case Thermal Resistance Between Junction and Ambient Thermal Shut down Temperature Symbol Rth ( j - c ) Rth ( j - a) Ttsd Value 12 60 150 Unit
oC/W o
C/W
o
C
4
KA2142C
Electrical Characteristic
(Refer to the test circuit ,V cc(L)= 35V,unless otherwise specified) Parameter Supply Voltage Supply Quiescent Current Pin4 Saturation Voltage to Gnd Saturation Voltage to supply Saturation Voltage to ground Output Center Voltage Input Bias Current Symbol VCC(L) VCC(H) ICC(L) ICC(H) V4SAT VHSAT VLSAT VMID IBIAS I4 = 20mA I6 = -1.2A I6 = -0.7A I6 = 1.2A I6 = 0.7A R1=5.6K,Rfb=45K V1=V10=2V V1 = 1V, V10 = 2V Conditions Min. 15 15 Typ. 25 6 22 0.5 1.6 1.3 1 0.7 18 -0.1 Max. 35 70 16 36 1 2.2 1.8 1.4 1 -1 Unit V V mA mA V V V V V V A
5
KA2142C
Typical Performance Characteristic
Vs-V4L
1 0.8 3 2
I4-V4L
V4L
0.4 0.2 0 0 10 20 30 40
V4L
1 0 0 20 40 60 80 100
0.6
VS
Figure 1. Vs-V4L
I4(mA)
Figure 2. I4-V4L
Isink-V6H
2.5 2 2
Isource-V6L
V6H
1.5 1 0.5 0 0 0.4 0.8 1.2 1.6 2
V6L(V)
1.5 1 0.5 0
0
0.4
0.8
1.2
1.6
2
Isink(A)
Figure 3. Isink-V6H
Isource(A)
Figure 4. Isource-V6L
Vs-I2,I9
25 20
mA
15 10 5 0 0 20 30 40
V
Figure 5. Vs-I2, I9
6
KA2142C
DC Test Circuit
KA2142C KA2142A
1
V1 SW1
2
3
4
5
6
V6
7
8
9
10
12 V2
+
V4 19
V1 R1 12K
C2 22p SW2 R4 10K
C3 22p
+
V9 C1 22p
V10
SW3
SW4
R6 0.1K V10 R2 5.6K
R5 0.1K R3 39K R7 10K
ITEM I2, I9 I1 V4L V6L V6H
INPUT VOLTAGE (V) V1 1 3 3 1 V10 2 2 2 2 Vin1 Vin2 2 SW1 OFF OFF OFF OFF OFF SW2 ON OFF OFF OFF OFF
SWITCH STATE SW3 OFF OFF OFF OFF OFF SW4 ON OFF OFF OFF OFF
7
KA2142C
AC Test Circuit
IN4001 VS
+ +
0.1uF 1000uF 220uF
PIN2 Vref 6.8K PIN1 Vin PIN10
PIN9 PIN4
KA2142C KA2142A
GND
PIN6 D.Y
Output
220n
150n
1.5 300
3.9K
3.9K
+
3.3K
10uF
+
2200uF
1
(7.5V) VCC
4 8 7 8 6 2 1
RA=2.7K VA=7.5V
1
KA551
+
3
KA358
4
2
10uF(60Hz) 5uF(12Hz
Typical Application Circuit
+
0.01 Vcc=25V R2 1.2 1W
IN4001
1000F
+
9 4
220F 35V
2 Vref 0.1F 15K Vin 10
KA2142C KA2142A
1 5
VOUT 6 0.15F 0.22F 1.5 330 2W V.D Y
470pF
3.9K 6.8K 0.33F
+
22F
3.9K
+
2200F
0.9 2W
8
KA2142C
Mechanical Dimensions
Package Dimensions in millimeters
10-SIP H/S
3.25 0.20 0.128 0.008 #1 1.50 ) 0.059 0.50 0.10 0.020 0.004 (
25.75 0.10 1.013 0.004
26.05 MAX 1.026
#10 1.30 ( ) 0.051
2.54 0.100
1.30 0.10 0.051 0.004
1.00 0.20 0.039 0.008 7.00 0.30 0.276 0.012 8.90 0.20 0.350 0.008 13.65 0.30 0.537 0.012 16.80 MAX 0.661
0.50 0.10 0.020 0.004
1.65 0.10 0.065 0.004
3.80 0.20 0.150 0.008
23.86 0.20 0.939 0.008
9
KA2142C
Ordering Information
Product Number KA2142C Package 10-SIP H/S Operating Temperature -20oC ~ +70 oC
10
KA2142C
11
KA2142C
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
www.fairchildsemi.com 5/3/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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