NTE1754
Integrated Circuit
Vertical Deflection Output Circuit
Description:
The NTE1754 is a full–performance vertical deflection output circuit in a 9–Lead SIP type package
intended for direct drive of the deflection coils and it can be used for a wide range of 90° and 110°
deflection systems.
The NTE1754 is provided with a guard circuit which blanks the picture tube screen in case of absence
of the deflection current.
Features:
DDirect Drive to the Deflection Coils
D90°and 110° Deflection System
DInternal Blanking Guard Circuit
DInternal Voltage Stabilizer
Applications:
DVideo Monitors
DTV Receivers
Absolute Maximum Ratings: (Note 1)
Output Voltage, V5–4 0 to 60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Voltage, V9–4 0 to 40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Voltage Output Stage, V6–4 0 to 60V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, V1–2 0 to V9–4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage Switching Circuit, V3–2 0 to V9–4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Voltage at Pin7, V7–2 0 to 5.6V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repetitive Peak Output Current, ±I5RM 1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non–Repetitive Peak Output Current (Note 1), ±I5SM 3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repetitive Peak Output Current of Flyback Generator, I8RM +1.5A, –1.6A. . . . . . . . . . . . . . . . . . . . . .
Non–Repetitive Peak Output Current of Flyback Generator (Note 1), ±I8SM 3A. . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, TA–25° to +60°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range (Note 2), TJ–25° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, Tstg –65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Mounting Base, RthJMB 3.5 to 4.0°C/W. . . . . . . . . . . . . . . . . . . . .
Note 1. Pin2 and Pin4 are externally connected to GND.
Note 2. The output current at Pin5 should not exceed 2.5A.
Electrical Characteristics: (TA = +25°C, VCC (V9–4) = 26V, Note 1, Note 3 unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Supply
Supply Voltage, Pin9 V9–4Note 5 10 –40 V
Supply Voltage Output Stage V6–4– – 60 V
Supply Current, Pin6 and Pin9 I6 + I9Note 6 35 55 85 mA
Quiescent Current I425 40 65 mA
Variation of Quiescent Current with Temperature TC – –0.04 –mA/°C
Output Current
Output Current (Peak–to–Peak), Pin5 I5(P–P) –2.5 3.0 A
Output Current Flyback Generator, Pin8 +I8(P–P) –1.25 1.5 A
–I8(P–P) –1.35 1.6 A
Output Voltage
Peak Voltage During Flyback V5–4– – 60 V
Saturation Voltage to Supply V6–5(sat) I5 = –1.5A –2.5 3.2 V
V5–6(sat) I5 = 1.5A, Note7 –2.5 3.2 V
V6–5(sat) I5 = –1.2A –2.2 2.7 V
V5–6(sat) I5 = 1.2A, Note 7 –2.3 2.8 V
Saturation Voltage to GND V5–4(sat) I5 = 1.2A –2.2 2.7 V
I5 = 1.5A –2.5 3.2 V
Flyback Generator
Saturation Voltage V9–8(sat) I8 = –1.6A –1.6 2.1 V
V8–9(sat) I8 = 1.5A, Note 7 –2.3 3.0 V
V9–8(sat) I8 = –1.3A –1.4 1.9 V
V8–9(sat) I8 = 1.2A, Note 7 –2.2 2.7 V
Leakage Current at Pin8 –I8–5100 µA
Flyback Generator Active If: V5–94– – V
Input
Input Current, Pin1 I1I5 = 1.5A –0.33 0.55 mA
Input Voltage During Scan, Pin1 V1–2–2.35 3.0 V
Input Current During Scan, Pin3 I3Note 8 0.03 – – mA
Input Voltage During Scan, Pin3 V3–2Note 8 0.8 –V9–4V
Input Voltage During Flyback, Pin1 V1–2– – 250 mV
Input Voltage During Flyback, Pin3 V3–2– – 250 mV
Note 1. Pin2 and Pin4 are externally connected to GND.
Note 3. Pin1 externally connedted to Pin3.
Note 4. Non–repetitive duty factor 3.3%.
Note 5. The maximum supply voltage should be chosen so that during flyback the voltage at Pin 5
does not exceed 60V.
Note 6. When V5–4 is 13V and no load at Pin5.
Note 7. Duty cycle, d = 5% or d = 0.05
Note 8. When Pin3 is driven separately from Pin1.
Electrical Characteristics (Cont’d): (TA = +25°C, VCC (V9–4) = 26V, Note 1, Note 3 unless
otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Guard Circuit
Output Voltage, Pin7 V7–2RL = 100kΩ, Note 11 4.1 4.5 5.8 V
IL = 0.5mA, Note 11 3.4 3.9 5.3 V
Internal Series Resistance of Pin7 Ri70.95 1.35 1.7 kΩ
Guard Circuit Activates V8–2Note 9 – – 1.0 V
General Data
Open Loop Gain GOat 1kHz, Note 10 –33 –
Frequency Response f–3dB, Note 12 –60 –kHz
Note 1. Pin2 and Pin4 are externally connected to GND.
Note 3. Pin1 externally connedted to Pin3.
Note 4. Non–repetitive duty factor 3.3%.
Note 5. The maximum supply voltage should be chosen so that during flyback the voltage at Pin 5
does not exceed 60V.
Note 6. When V5–4 is 13V and no load at Pin5.
Note 7. Duty cycle, d = 5% or d = 0.05
Note 8. When Pin3 is driven separately from Pin1.
Note 9. During normal operation the voltage V8–2 may not be lower than 1.5V
Note10. RL = 8Ω; IL = 125mARMS
Note11. If guard circuit is active.
Note12. With a 22pF capacitor between Pin1 and Pin5.
VCC
Pin Connection Diagram
(Front View)
Flyback Generator
GND
Output
Input
Switching Circuit
Output Stage GND
Output Stage Supply Input
Voltage Stabilizer
9
8
7
6
5
4
3
2
1
.489
(12.4)
.079
(2.0)
91
.079
(2.0)
.674
(17.0)
.100 (2.54)
.961 (24.4)
.780 (19.8) .185 (4.7)
