NTE NTE1867, NTE1868 Datasheet

NTE1867 & NTE1868

Integrated Circuit

Hybrid Switching Voltage Regulator

Features:

D Few External Components Needed
D Conversion Efficiency: 85%
D Accurate Voltage Setting: ±2%
D Low Switching Noise
D Output Voltage Adjustable

Applications:

D Power Supply Circuits for Electrionic Typewriter, Printer, and Copy Machines
D Power Supply for VCR, Personal Wireless Station, and Battery Charger

Absolute Maximum Ratings:

DC Input Voltage, V
DC Input Current, I

IN

O

(TA = +25°C unless otherwise specified)

Continuous 2A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pulsed 3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Dissipation, P

D

TC = +25°C 75W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T

= +100°C 15W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C

Operating Temperature Range, T
Storage Temperature Range, T

Electrical Characteristics:

Parameter Symbol Test Conditions Min Typ Max Unit

DC Input Voltage Range

NTE1867

NTE1868 19 – – V

Output Voltage Setting

NTE1867

NTE1868 12.8 13.0 13.2 V
Line Regulation ∆V
Load Regulation ∆V
Efficiency η VIN = 24V, IO = 1A – 85 – %

opr

stg

(TA = +25°C unles otherwise specified)

V

IN

IO = 1A 18 – – V

V

O

VIN = 24V, IO = 1A 11.8 12.0 12.2 V

LINEVIN

LOADVIN

= 20V to 28V, IO = 1A – – 60 mV
= 24V, IO = 0.5A to 1.5A – – 100 mV

–20° to +100°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20° to +100°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ripple Rejection R
Oscillating Frequency f

REJ

OSC

f = 100Hz to 200Hz – 45 – dB
VIN = 24V, IO = 1A – 25 – kHz

Pin Connection Diagram

(Front View)

5
4
3
2
1

Input
Voltage Sensing

GND
V oltage Adjustment
Output/Case

1.410 (36.0)

.960 (24.4)

12345

.236 (6.0)

Max

.834

(21.2)

.177

(4.5)

.214 (5.45)

.039 (1.0)

.708

(18.0)

.023 (0.6)