NTE7005 Integrated Circuit 2–Phase Stepping Motor Driver Description: The NTE7005 monolithic power IC is a dual bridge driver in a 16–Lead DIP type package. The maximum driving current and voltage is 330mA x 12V per bridge. Therefore, the best use for this part is in a two–phase bipolar stepping motor driving the head actuator of a 3, to 5.25–inch Floppy Disk Drive. Features: D 330mA Output Current Capability D Dual Bridge Included D Power Save D Single Input Direction Control D Low Output Saturation Voltage D Low Supply Current D Low Input Current D Compatible with TTL, LSTTL, and 5V CMOS D Thermal Shutdown Absolute Maximum Ratings: (TA = +25°C, Note 1 unless otherwise specified) Logic Stage Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Seeking Supply Voltage, Vs1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Holding Supply Voltage, Vs2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Input Voltage, Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to VCC Peak Seeking Current (t ≤ 5ms), Io(peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mA DC Seeking Current, Ios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330mA DC Holding current, IOH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mA Power Dissipation (Note 2), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2W Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Operating Junction Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +125°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C Note 1. The absolute maximum ratings are limiting values, to be applied individually, beyond which the device may be permanently damaged. Functional operation under any of these conditions is not guaranteed. Exposing a circuit to its absolute maximum rating for extended periods of time may affect the device’s reliability. Note 2. Thermal resistance is as follows: RthJA1 ≤ +60°C/W (Soldered on a print circuit board) RthJA2 ≤ +35°C/W (Soldered on a print circuit covered with copper sufficiently) RthJA3 ≤ +15°C/W (Soldered on Pin4, Pin5, Pin12, and Pin13 with an infinite heat sink) Recommended Operating Conditions: Parameter Symbol Test Conditions Min Typ Max Unit Logic Stage Supply Voltage VCC 4.5 5.0 5.5 V Seeking Supply Voltage Vs1 10.2 12.0 13.8 V Holding Supply Voltage Vs2 4.5 5.0 5.5 V Electrical Characteristics: (TA = +25°C, VCC = 5V, Vs2 = 5V, Vs1 = 12V unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Low Voltage VIL – – 0.8 V Input High Voltage VIH 2.0 – – V Input Low Current IIL VI = 0.8V – – ±10 µA Input High Current IIH VI = 2V – 1.0 ±10 µA VI = 5.5V – 0.5 1.0 mA VCC – 25 33 mA Vs1, Note 3 – 10 20 mA Vs2, Note 4 – – 1.0 mA VCC – 25 33 mA Vs1, Note 3 – 3 5 mA Vs2, Note 4 – 5 10 mA 18 – – V Supply Current ICC PS = 0.8V, Io = 0 PS = 2V, Io = 0 Output Transistor Breakdown Voltage V(BR)CE IC = 10mA R Vs1 Saturation Voltage VCE(sat)1 PS = 0.8V, Io = 330mA, Note 5 – 1.5 2.0 V Vs2 Saturation Voltage VCE(sat)2 PS = 2V, Io = 130mA, Note 5 – 1.5 2.0 V Upper – 5 – V Lower – 1.5 – V – 1 5 µs – 1 5 µs Clamp Diode Forward Voltage Delay Time VF IF = 330mA tPLH Io = 330mA tPHL Note 3. Sum of VS1 (φ1) and VS1(φ2) current Note 4. Sum of VS2 (φ1) and VS2 (φ2) current Note 5. Sum of upper and lower saturation voltages Truth Table (For each bridge): Power Save Direction L L H H Note: L H L H FOut FOut L H+ L H– H+ L H– L L = Low voltage state H+ = High voltage state (Seeking transistors ON) H– = High voltage state (Holding transistors ON) Pin Connection Diagram VS2/Phase 1 1 16 VS1/Phase 1 VCC 2 15 Phase 1 Output Phase 1 Direction 3 14 Phase 1 Output GND 4 13 GND GND 5 12 GND Phase 2 Direction 6 11 Phase 2 Output Power Save 7 10 Phase 2 Output VS2/Phase 2 8 9 16 VS1/Phase 2 9 .260 (6.6) Max 1 8 .300 (7.62) .785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)