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NTE1750Integrated Circuit

Dual SwitchMode Solenoid Driver

Description:

This NTE1750 is a monolithic integrated circuit in a 15Lead Staggared SIP type package that incor-porates all the functions for direct interfacing between digital circuitry and inductive loads. This deviceis designed to accept standard micriprocessor logic levels at the inputs and can drive 2 solenoids.The output current is completely controlled by means of a switching technique allowing very efficient

operation. Furthermore, it includes an enable input and dual supplies (for interfacing with peripheralsrunning at a higher voltage than the logic).

Features:

D High Current Capability

D High Voltage Operation

D High Efficiency SwitchMode Operation

D Regulated Output Current

D Separate Logic Supply

D Thermal Protection

Applications:

D Hammer Driver for Matrix Printers

D Stepper Motor Driver

D Electromagnetic Controller

Absolute Maximum Ratings:

Supply Voltge, VS 50V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Logic Supply Voltage, VSS 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Enable and Input Voltage, VEN, Vi 7V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reference Voltage, Vref 7V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Peak Output Current (Each Channel), IO

NonRepetitive (t = 100s) 3.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Repetitive (80% ON; 20% OFF, Ton = 10ms) 2.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC Operation 2.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total Power Dissipation (TC = +75C), Ptot 25W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operating Junction Temperature Range, TJ 40 to +150C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Storage Temperature Range, Tstg 40 to +150C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermal Resistance, JunctiontoCase, TthJC 3C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermal Resistancde, JunctiontoAmbient, RthJA 35C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Electrical Characteristics: (VSS = 5V, VS = 26V, TJ = +25C, Note 1 unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage VS 12 46 V

Logic Supply Voltage VSS 4.75 10.0 V

Quiescent Drain Current (From VSS) Id VS = 46V, Vi1 = Vi2 = VEN = L 4 mA

Quiescent Drain Current (From VS) Iss VSS = 10V 46 mA

Input Voltage Vi1, V

i2Low 0.3 +0.8 V

High 2.2 7.0 V

Enable Input Voltage VEN Low 0.3 +0.8 V

High 2.2 7.0 V

Input Current Ii1, Ii2 Vi1 = Vi2 = L 100 A

Vi1 = Vi2 = H 10 A

Enable Input Current IEN VEN = L 100 A

VEN = H 10 A

Input Reference Voltage Vref1, Vref2 0.2 2.0 V

Input Reference Current Iref1, Iref2

5 AOscillation Frequency f OSC C = 3.0nF, R = 9.1k 25 kHz

Transconductance (Each Channel) Ip Vref= 1V 1.9 2.0 2.1 A/V

Vref

Total Output Voltage Drop (Each Channel) Vdrop IO = 2A, Note 2 2.8 3.6 V

External Sensing Resistors Voltage Drop Vsense1,Vsense2

2 V

Note 1. L = Low, H = HighNote 2. Vdrop = VCE(sat)Q1 + VCE(sat)Q2.

VSS

Enable

Logic/VS

Output Low Ch 1

Input Signal Ch 1

GND

OSC RC Network

Input Ref Vltg Ch 1

Output High Ch 1

Input Ref Vltg Ch 2

Output Low Ch 2

15

14

13

12

Output High Ch 2

Current Sensing Ch 2

11 Input Signal Ch 2

10

9

8

7

6

5

Current Sensing Ch 14

3

2

1

Pin Connection Diagram(Front View)

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.699(17.7)

.860(21.8)

.150 (3.81) Dia Max

.791 (20.1)

.689(17.5)

.069 (1.75)

.196 (4.99)

.110(2.79)

.169(4.29)

.008 (.203).050 (1.27) .200

(5.08)

151