NTE1858
Integrated Circuit
Vertical Deflection Circuit
Description:
The NTE1858 is a full performance and very ef ficient vertical deflection circuit in an 11–Lead SIP type
package intended for direct drive of a TV picture tube in Color and B & W television as well as in Moni-
tor and Data Displays.
Features:
DRamp Generator
DIndependent Amplitude Adjustment
DBuffer Stage
DPower Amplifier
DFlyback Generator
DInternal Reference Voltage
DThermal Protection
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VS35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flyback Peak Voltage, V1, V265V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Input Voltage, V320V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amplifier Input Voltage, V9GND to VS V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak to Peak Current, IO
Non–Repetitive, t = 2ms 6A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
t > 10µs 4A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin11 DC Current (V1 < V10), I11 100mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin11 Peak–to–Peak Current (t8y < 1.5ms) 3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Power Dissipation (TA = +60°C), Ptot 30W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction Temperature Range, Tj0° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Temperature Range, TA0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, Tstg –40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Tab, Rth(j–tab) 3°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Ambient, Rth(j–amb) 40°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Electrical Characteristics: (VS = 35V, TA = 25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Quiescent Current (Pin2) I2I1 = 0, I11 = 0 –16 36 mA
Quiescent Current (Pin10) I10 I1 = 0, I11 = 0 –15 30 mA
Ramp Generator Bias Current –I7V7 = 0 – – 0.6 µA
Ramp Generator Current –I7V7 = 0, –I4 = 20µA 18.6 20 21.6 µA
Ramp Generator Linearity dI7/I7V6 = 0 to 15V, –I4 = 20µA–0.2 1 %
Quiescent Output Voltage V1Ra = 30k, Rb = 10k,
VS = 35V 17.0 17.8 18.6 V
Ra = 6.8k, Rb = 10k,
VS = 15V 7.2 7.6 7.8 V
Out Saturation Voltage to GND V1L I1 = 0.5A –0.5 1 V
I1 = 1.2A –1 1.4 V
Out Saturation Voltage to VSV1H –I1 = 0.5A –1.1 1.6 V
–I1 = 1.2A –1.6 2.2 V
Reference Voltage V4–I4 = 20µA 6.3 6.6 6.9 V
Reference Voltage Drift
versus VSdV4/dVSVS = 10V to 35V –1 2 mV/V
Reference Voltage Drift
versus I4dV4/dI4I4 = 10µA to 30µA–1.5 2 mV/µA
Internal Reference Voltage Vr4.26 4.40 4.54 V
Diode Forward Voltage VD11–10 IO = 1.2A –2.2 3.0 V
Diode Forward Voltage VD1–2IO = 1.2A –2.2 3.0 V
Output Stage Open Loop Gain GVf = 100HZ–60 –dB
Saturation Voltage (V10–11) VIS –I11 = 1.2A –1.5 2.5 V
Scanning Voltage (Pin11) V11 I11 = 20mA –1.7 3.0 V
Trigger Input Threshold V3Note 1 2.6 3.0 3.4 V
Trigger Input Bias Current I3VIN = V3 • 0.2V – – 30 µA
Trigger Input Width t3Note 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 VS10 –30 V
Peak–to–Peak Operating Current Range II0.4 –2.5 A
Supply Current ISIy = 2.4APP –31.5 –mA
Flyback Voltage V1Iy = 2.4APP –51 –V
Sawtooth Pedestal Voltage V8–1.85 –V
Junction Temperature for Thermal
Shutdown Tjs –145 –°C
Note 1:The trigger input circuit can accept, optionally, positive and negative going input pulses.
Output Stage VS
VS
Voltage
Regulator
Ramp
Generator
Flyback
Generator
Thermal
Protection
Buffer
Stage
Power
Amp
+
–
Trigger Input Clock
Pulse
10 2
R3
11
1
69874
3
Pin Connection Diagram
(Front View)
Block Diagram
Height Adjust
Flyback Generator
Inverting Input
N.C.
Buffer Output
GND
Ramp Generator
Trigger Input
Power Output
11
10
9
8
7
6
5
4
3
2
1
.696
(17.68)
.858
(21.79)
.150 (3.81) Dia Max
.791 (20.1)
.689
(17.5)
.062 (1.52)
.196 (4.99)
.110 (2.79)
.169 (4.29)
.008 (.203)
.067 (1.7) .200
(5.08)
111
Note
NOTE: Tab connected o Pin6
