NTE NTE1870 Datasheet

NTE1870

Integrated Circuit

Module – Color TV Switching Regulator

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Input AC Voltage, V
Output Power, P

AC: 90V to 280V 80W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC: 150V to 280V 100W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Substrate Temperature, T
Junction Temperature, T
Ambient Operating Temperature Range, T
Storage Temperature Range, T
Thermal Resistance, Junction–to–Case, R

max 280V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC

max

O

max +105°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C

J

opr

stg

thJC

+105°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–10° to +60°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–30° to +105°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.8°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics:

Parameter Test Conditions Min Typ Max Unit

Output Voltage

Hi +B

Low +B VAC = 220V, IO1 = 500mA, IO2 = 500mA – 15.0 – V
Line Regulation VAC = 90V to 280V, IO1 = 500mA, IO2 = 500mA – – 1 V
Load Regulation VAC = 220V, IO1 = 300mA to 700mA, IO2 = 500mA – 1.5 2.0 V
Ripple Voltage VAC = 220V, IO1 = 500mA, IO2 = 500mA – 0.3 0.6 V
Temperature Stability VAC = 220V, IO1 = 500mA, IO2 = 500mA – 0.01 – %/°C
Operating Frequency VAC = 220V, IO1 = 500mA, IO2 = 500mA – 34 – kHz
Operating Efficiency VAC = 220V, IO1 = 500mA, IO2 = 500mA – 80 – %
Cross Road Regulation VAC = 220V, IO1 = 500mA, IO2 = 0 to 1A – 0.2 – V
Dielectric Voltage

(TA = +25°C unless otherwise specified)

VAC = 220V, IO1 = 500mA, IO2 = 500mA 114.0 115.0 116.0 V

Prim – Second

4 – – kV

Note 1. Hi +B: VO1, IO1; Low +B: VO2, IO2

P–P

Pin Connection Diagram

(Front View)

TR5 Collector (Internal)

15

TR5 Collector (Internal)

14
13

No Pin
No Pin

12
11 TR5 Emitter (Internal)

TR5 Base (Internal)

10

Constant Current base Drive

9

Voltage Compensation

8
7

Constant Current Base Driver Control
Constant Current Base Driver Control

6

Current Feedback for Overcurrent Protection

5

Power Supply for Control Voltage Set Up4
Voltage to Set Up an Output Voltage

3

Soft Start/Output Voltage Setting

2

Control Circuit GND

1

2.330 (59.2)

2.050 (52.0)

.335 (8.5)

1.004
(25.5)

.630

(16.0)

.835

(21.2)

115

.100 (2.54)

.205 (5.2)

1.400 (35.6)