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NTE1858
Integrated Circuit
Vertical Deflection Circuit
Description:
The NTE1858 is a full performance and very efficient vertical deflection circuit in an 1 1–Lead SIP type
package intended for direct drive of a TV picture tube in Color and B & W television as well as in Monitor and Data Displays.
Features:
D Ramp Generator
D Independent Amplitude Adjustment
D Buffer Stage
D Power Amplifier
D Flyback Generator
D Internal Reference Voltage
D Thermal Protection
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, V
Flyback Peak Voltage, V1, V
Trigger Input Voltage, V
Amplifier Input Voltage, V
Output Peak to Peak Current, I
S
2
3
9
O
GND to VS V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non–Repetitive, t = 2ms 6A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
t > 10µs 4A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin11 DC Current (V1 < V10), I
11
100mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin11 Peak–to–Peak Current (t8y < 1.5ms) 3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Power Dissipation (TA = +60°C), P
Junction Temperature Range, T
Ambient Temperature Range, T
Storage Temperature Range, T
j
A
stg
Thermal Resistance, Junction–to–Tab, R
Thermal Resistance, Junction–to–Ambient, R
tot
th(j–tab)
th(j–amb)
0° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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DC Electrical Characteristics: (VS = 35V, TA = 25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Quiescent Current (Pin2) I
Quiescent Current (Pin10) I
2
10
Ramp Generator Bias Current –I
Ramp Generator Current –I
Ramp Generator Linearity dI7/I
Quiescent Output Voltage V
Out Saturation Voltage to GND V
Out Saturation Voltage to V
S
V
1L
1H
Reference Voltage V
Reference Voltage Drift
versus V
S
Reference Voltage Drift
versus I
4
dV4/dVSVS = 10V to 35V – 1 2 mV/V
dV4/dI4I4 = 10µA to 30µA – 1.5 2 mV/µA
Internal Reference Voltage V
Diode Forward Voltage V
Diode Forward Voltage V
D11–10IO
D1–2IO = 1.2A
Output Stage Open Loop Gain G
Saturation Voltage (V
Scanning Voltage (Pin11) V
) V
10–11
IS
11
Trigger Input Threshold V
Trigger Input Bias Current I
Trigger Input Width t
3
3
I1 = 0, I11 = 0 – 16 36 mA
I1 = 0, I11 = 0 – 15 30 mA
V7 = 0 – – 0.6 µA
7
V7 = 0, –I4 = 20µA 18.6 20 21.6 µA
7
V6 = 0 to 15V, –I4 = 20µA – 0.2 1 %
7
Ra = 30k, Rb = 10k,
1
17.0 17.8 18.6 V
VS = 35V
Ra = 6.8k, Rb = 10k,
7.2 7.6 7.8 V
VS = 15V
I1 = 0.5A – 0.5 1 V
I1 = 1.2A – 1 1.4 V
–I1 = 0.5A – 1.1 1.6 V
–I1 = 1.2A – 1.6 2.2 V
–I4 = 20µA 6.3 6.6 6.9 V
4
r
4.26 4.40 4.54 V
= 1.2A – 2.2 3.0 V
– 2.2 3.0 V
V
f = 100H
Z
– 60 – dB
–I11 = 1.2A – 1.5 2.5 V
I11 = 20mA – 1.7 3.0 V
Note 1 2.6 3.0 3.4 V
3
VIN = V3 • 0.2V – – 30 µA
Note 2 20 60 Th µs
AC Electrical Characteristics: (VS = 24V, TA = 25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Operating Supply Range V
Peak–to–Peak Operating Current Range I
Supply Current I
Flyback Voltage V
Sawtooth Pedestal Voltage V
Junction Temperature for Thermal
T
S
I
1
8
Iy = 2.4A
Iy = 2.4A
PP
PP
S
js
10 – 30 V
0.4 – 2.5 A
– 31.5 – mA
– 51 – V
– 1.85 – V
– 145 – °C
Shutdown
Note 1:The trigger input circuit can accept, optionally, positive and negative going input pulses.
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Block Diagram
10 2
Trigger Input
Voltage
Regulator
3
Ramp
Generator
Buffer
Stage
Pin Connection Diagram
R3
Clock
Pulse
(Front View)
Flyback
Generator
+
Power
Amp
–
Thermal
Protection
69874
11
1
Flyback Generator
11
10
V
S
Inverting Input
9
Buffer Output
8
Ramp Generator
7
GND
6
N.C.
5
Height Adjust
4
Trigger Input
3
2
Output Stage V
Power Output
1
S
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.791 (20.1)
.196 (4.99)
.062 (1.52)
Note
.150 (3.81) Dia Max
111
.008 (.203)
.067 (1.7) .200
.689
(17.5)
.858
(21.79)
(5.08)
.110 (2.79)
.696
(17.68)
.169 (4.29)
NOTE: Tab connected o Pin6
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