NTE1750 Integrated Circuit Dual Switch−Mode Solenoid Driver Description: This NTE1750 is a monolithic integrated circuit in a 15−Lead Staggared SIP type package that incorporates all the functions for direct interfacing between digital circuitry and inductive loads. This device is 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 peripherals running at a higher voltage than the logic). Features: D High Current Capability D High Voltage Operation D High Efficiency Switch−Mode 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 Non−Repetitive (t = 100µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0A Repetitive (80% ON; 20% OFF, Ton = 10ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5A DC Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A Total Power Dissipation (TC = +75°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25W Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C Thermal Resistance, Junction−to−Case, TthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W Thermal Resistancde, Junction−to−Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W Electrical Characteristics: (VSS = 5V, VS = 26V, TJ = +25°C, 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 Low −0.3 − +0.8 V High 2.2 − 7.0 V Low −0.3 − +0.8 V High 2.2 − 7.0 V Vi1 = Vi2 = L − − −100 µA Vi1 = Vi2 = H − − 10 µA VEN = L − − −100 µA VEN = H − − 10 µA Input Voltage Enable Input Voltage Input Current Vi1, Vi2 VEN Ii1, Ii2 Enable Input Current IEN Input Reference Voltage Vref1, Vref2 0.2 − 2.0 V Input Reference Current Iref1, Iref2 − − −5 µA − 25 − kHz 1.9 2.0 2.1 A/V − 2.8 3.6 V − − 2 V Oscillation Frequency fOSC Transconductance (Each Channel) Ip C = 3.0nF, R = 9.1kΩ Vref = 1V Vref Total Output Voltage Drop (Each Channel) Vdrop External Sensing Resistors Voltage Drop Vsense1, Vsense2 IO = 2A, Note 2 Note 1. L = Low, H = High Note 2. Vdrop = VCE(sat) Q1 + VCE(sat) Q2. Pin Connection Diagram (Front View) 15 14 13 12 11 Output High Ch 2 Output Low Ch 2 10 9 8 7 6 5 4 3 2 1 Logic/VS OSC RC Network GND Enable Input Signal Ch 1 Input Ref Vltg Ch 1 Current Sensing Ch 1 Output Low Ch 1 Output High Ch 1 VSS Current Sensing Ch 2 Input Ref Vltg Ch 2 Input Signal Ch 2 .196 (4.99) .791 (20.1) .069 (1.75) .110 (2.79) .150 (3.81) Dia Max .689 (17.5) .699 (17.7) .860 (21.8) 1 15 .050 (1.27) .008 (.203) .200 (5.08) .169 (4.29)