NTE NTE1737 Datasheet

NTE1737

Integrated Circuit

Module, Chopper & Chopper Parallel

w

/2–Output Voltage Regulator

Features:

D 2 Outputs for Miicrocomputer Power Supply (5V) and Motor Drive Power Supply (24V) and

Capable of Delivering 2 Regulated Voltage Outputs from 1 Rectifier

D Independent Overcurrent Protectors for 2 Outputs (Foldback Characteristics)

Applications:

D Serial Printers, Line Printers, Office Automation Equipment
D Floppy Disk Units, Portable VCRs

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

Maximum DC Input Voltage, VIN (DC) max 50V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Output Current, IOmax

Average 3A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak

VO1 3.6A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VO2 6.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Case Temperature, T
Junction Temperature, T

J

Storage Temperature Range, T

C

stg

Thermal Resistance, Junction–to–Case, R

VO1 4.7°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VO2 2.7°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

thJC

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

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Parameter Test Conditions VO1 VO2 Unit

Output Voltage Condition 1 5 ±0.1 24 ±0.1 V
Ripple Voltage Condition 1 5 20 mV
Line Regulation Condition 2 15 30 mV/V Max
Load Regulation Condition 3 70 50 mV/V Max
Overcurrent Trip Start Current Condition 4 3.6 6.0 A Min
Effeciency Condition 5 80 80 % Typ
Operating Frequency Condition 1 35 35 kHz Typ
Cutoff Voltage Condition 1 – 3V or more ON

– 1V or less OFF

Temperature Coefficient Condition 1 –0.025 –0.01 %/°C

rms

Max

Test Conditions:

Condition 1: VIN (DC) = 35V, IO1 = IO2 = 1A
Condition 2: VIN (DC) = 30V to 40V, IO1 = IO2 = 1A
Condition 3: VIN (DC) = 35V, IO1 = 1A to 3.6A, IO2 = 1A to 6A
Condition 4: VIN (DC) = 35V
Condition 5: VIN (DC) = 35V, IO1 = IO2 = 1.5A

Pin Connection Diagram

(Front View)

18 N.C.
17

VIN 1

16

VIN 1

15

VIN 2

14

VIN 2

13

V

Z

Sense GND

12

Output 2

11

Output 210
GND

9

GND

8

Output 1

7
6 Output 1

V1 Sense 1

5

V1 Sense 2

4

V2 Sense 1

3

V2 Sense 22
Cutoff

1

.141

(3.6)

Dia

(2 Holes)

2.520 (64.0)

2.190 (55.6)

.334 (8.5)

1.440
(36.4)

.737

(18.7)

118

1.030
(32.5)

.158 (4.0)

.100 (2.54)

.114 (5.5)1.700 (43.18)