LV8549MC Bi-CMOS integrated circuit 12V Low Saturation Voltage Drive http://onsemi.com Stepper Motor Driver Application Note Overview The LV8549MC is a 2-channel low saturation voltage stepper motor driver IC. It is optimal for Full step motor drive in 12V system products. Function • DMOS output transistor adoption (Upper and lower total RON=1Ω typ) • The compact package (SOIC10) is adopted. • VCC max=20v, IO max=1A • For one power supply (The control system power supply is unnecessary.) • Current consumption 0 when standing by Typical Applications • Refrigerators • Time Recorder • Label Printer • Vacuum cleaner • POS Printer • TOY Pin Assignment Semiconductor Components Industries, LLC, 2013 December, 2013 1/12 LV8549MC Application Note Package Dimensions symbol D D1 A A1 A2 e L b c x y HE E Θ Z MIN. SOIC10 NOM. 4.80 <4.90> 0.10 1.25 <0.175> 0.40 0.31 0.17 5.80 3.80 0.00 1.00 <0.835> <0.41> <0.21> 0.25 0.10 <6.00> <3.90> MAX. 5.00 1.75 0.25 1.75 1.27 0.51 0.25 6.20 4.00 8.00 Caution: The package dimension is a reference value, which is not a guaranteed value. Block Diagram Figure1 One stepper motor drive 2/12 LV8549MC Application Note Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum power supply voltage VCC max -0.3 to +20 Output impression voltage VOUT -0.3 to +20 V Input impression voltage VIN -0.3 to +6 V GND pin outflow current IGND For ch Allowable Power dissipation Pd max * Operating temperature Topr Storage temperature Tstg *: When mounted on the specified printed circuit board (57.0mm ×57.0mm × 1.6mm), glass epoxy, both sides V 1.0 A 1.05 W -30 to +85 °C -40 to +150 °C Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Recommended Operating Condition at Ta = 25°C Parameter Symbol Conditions Ratings min typ Unit max Power supply voltage VCC 4 16 V Input “H” level voltage VINH +1,8 +5.5 V Input “L” level voltage VINL -0.3 +0.7 V Electrical Characteristics at Ta = 25°C, VCC = 12V Parameter Power supply voltage Symbol Conditions ICC0 Standby mode ENA=L ICC1 ENA=H Input current IIN VIN=5V Thermal shutdown operating Ttsd Design certification Width of temperature hysteria ΔTtsd Design certification Low voltage protection function VthVCC Ratings min typ Unit max 1 μA 1.7 2.3 mA 30 50 65 μA 150 180 210 °C 3.3 3.5 3.65 3.55 3.8 3.95 V 0.7 1 1.25 Ω 10 μA 1.0 1.2 V temperature °C 40 V operation voltage Release voltage Vthret Output ON resistance RON IOUT=1.0A Output leak current IOleak VO=16V Diode forward voltage VD ID=1.0A (Upper and lower total) 3/12 2.0 2.5 1.5 2.0 1.0 1.5 ICC1 (mA) ICC0 (μA) LV8549MC Application Note 0.5 0.0 -0.5 1.0 0.5 0.0 4 6 8 10 12 14 VCC (V) Figure 2 Standby Load Power Supply Current vs VCC Voltage 16 4 70 10 12 14 16 VCC (V) Figure 3 Operating Consumption Current vs VCC Voltage 1.5 50 40 Ioleak (µA) IIN (μA) 8 2.0 60 30 20 10 0 Ioleak Pch 1.0 Ioleak Nch 0.5 0.0 -0.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 VIN (V) Figure 4 Input Supply current vs Vin Voltage 1.2 1.2 1 1 0.8 0.8 Ron (Ω) VD (V) 6 0.6 Upper-side 0.4 0.2 Lower-side 0 6 8 10 12 14 VCC (V) Figure 5 Output Leak Current vs VCC Voltage 16 0.6 0.4 OUT1→OUT2 0.2 OUT2→OUT1 0 0 0.2 0.4 0.6 0.8 ID(A) Figure 6 Diode Forward Voltage vs ID Current 1 0 0.2 0.4 0.6 0.8 Iout (A) Figure 7 Output on Resistance vs Output Current (VCC=12V) 1 4/12 2.5 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 2.0 ICC1 (mA) ICC0 (µA) LV8549MC Application Note 1.5 1.0 0.5 0.0 -30 0 30 60 90 -30 120 Figure 8 Standby Load Power Supply Current vs Temperature (VCC=12V) 60 5 50 4 40 3 IoLeak (µA) IIN (µA) 30 60 90 120 TEMPERATURE (˚C) Figure 9 Operating Consumption Current vs Temperature (VCC=12V) TEMPERATURE (˚C) 30 20 10 0 Ioleak P Ioleak N 2 1 0 -1 -30 0 30 60 90 120 -30 TEMPERATURE (˚C) Operation Voltage Release Voltage -30 0 30 60 30 60 90 120 90 120 Figure 11 Output Leak Current vs Temperature (VCC=12V) VIN H (V) 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 TEMPERATURE (˚C) Figure 10 Input Supply current vs Temperature (VIN=5V) Vth (V) 0 90 TEMPERATURE (˚C) Figure 12 Low Voltage Protection Function vs Temperature 120 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -30 0 30 60 TEMPERATURE (˚C) Figure 13 Input "H" Level Threshold Voltage vs Temperature 5/12 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 1.6 1.4 1.2 VD (V) Ron (Ω) LV8549MC Application Note 1 0.8 0.6 0.4 Upper-side 0.2 Lower-side 0 -30 0 30 60 TEMPERATURE (˚C) Figure 14 Output on Resistance vs Temperature (VCC=12V) 90 120 -30 0 30 60 90 120 TEMPERATURE (˚C) Figure 15 Diode Forward Voltage vs Temperature (VCC=12V) 6/12 LV8549MC Application Note Pin function Pin No. 1 Pin name VCC 2 ENA Pin function Power-supply voltage pin. VCC voltage is impressed. The permissible operation voltage is from 4.0 to 16.0(V). The capacitor is connected for stabilization for GND pin (6pin). Motor drive control input pin. It shifts from the stand-by state to a prescribed output operation corresponding to the state of the input when the ENA pin becomes a standby mode by L, the circuit current can be adjusted to 0, and it makes it to H. It is a digital input, and the range of L level input is 0 to 0.7(V) and the range of H level input are 1.8 to 5.5(V). PWM can be input. Pull-down resistance 100(kΩ) is built into in the terminal. 3 IN1 Motor drive control input pin. Driving control input pin of OUT1 (10pin) and OUT2 (9pin). PWM can be input. With built-in pull-down resistance. 4 IN2 Motor drive control input pin. Driving control input pin of OUT3 (8pin) and OUT4 (7pin). PWM can be input. With built-in pull-down resistance. 5 6 7 NC GND OUT4 8 OUT3 Equivalent Circuit 1KΩ 40KΩ 100KΩ Ground pin. Driving output pin. The motor coil is connected between terminal OUT3 (8pin). VCC Driving output pin. The motor coil is connected between terminal OUT4 (7pin). 9 OUT2 Driving output pin. The motor coil is connected between terminal OUT1 (10pin). 10 OUT1 Driving output pin. The motor coil is connected between terminal OUT2 (9pin). OUT1 (OUT3) OUT2 (OUT4) GND 7/12 LV8549MC Application Note Operation explanation 1. STM output control logic Input Output ENA IN1 IN2 OUT1 OUT2 OUT3 OUT4 L - - OFF OFF OFF OFF H Function Standby L L H L H L Step 1 H L L H H L Step 2 H H L H L H Step 3 L H H L L H Step 4 2. About the switch time from the stand-by to the operation When ENA pin are "L", this IC has completely stopped operating. After the time of reset (about 7μs of an internal setting) it shifts to a prescribed output status corresponding to the state of the input when the signal enters the ENA pin. ENA ON ENA IN1 (* IN1 and IN2 are Full-Step Input) IN2 OUT1 (OUT2 is a reverse phase of OUT1) OUT3 (OUT4 is a reverse phase of OUT3) Standby 7µs (Reset time) Full-step drive Figure16 Switch time from the stand-by to the operation 3. Thermal shutdown function The thermal shutdown circuit is incorporated and the output is turned off when junction temperature Tj exceeds 180°C. As the temperature falls by hysteresis, the output turned on again (automatic restoration). The thermal shutdown circuit does not guarantee the protection of the final product because it operates when the temperature exceed the junction temperature of Tjmax=150°C. TSD = 180°C (typ) ΔTSD = 40°C (typ) 4. Low voltage protection function When the power supply voltage is as follows typical 3.5V, the output does OFF. When the power supply voltage is as above typical 3.8V, the IC outputs a set state. 8/12 LV8549MC Application Note STEP STEP STEP STEP STEP STEP Operation principal • Full-Step Drive Motor advances 90 degree by inputting 1 step. Phase A + Phase B + (1) Phase A + Phase B – (4) 90deg (3) (2) Phase A – Phase B – Figure 17. Full-Step Timing Phase A – Phase B + Figure 18. Motor electric angle (Full Step Drive) 6 NC 5 GND 7 IN2 4 OUT4 8 IN1 3 OUT3 9 ENA 2 OUT2 VCC 1 OUT1 10 Application Circuit Example * Bypass capacitor (C1) connected between VCC-GND of all examples of applied circuit recommends the electric field capacitor of 0.1μA to 10μA. Confirm there is no problem in operation in the state of the motor load including the temperature property about the value of the capacitor. Mount the position where the capacitor is mounted on nearest IC. 9/12 LV8549MC Application Note Eva-Board Manual 1. Eva-Board circuit diagram Motor connection terminal C1:10µF VIN （power supply input terminal for switches ） Bill of Materials for LV8549MC Evaluation Board Footprint Manufacturer Manufacturer Part Number Substitution Allowed Lead Free SOIC10 ON semiconductor LV8549MC No Yes SUN Electronic Industries 50ME10HC Yes Yes Switch MIYAMA MS-621-A01 Yes Yes Test points MAC8 ST-1-3 Yes Yes Designator Qty Description IC1 1 Motor Driver C1 1 VCC Bypass capacitor SW1-SW4 3 TP1-TP11 11 Value 10µF 50V Tol ±20% 10/12 LV8549MC Application Note 2. One stepper motor drive • Connect a stepper motor with OUT1, OUT2, OUT3 and OUT4. • Connect the motor power supply with the terminal VCC, the control power supply with the terminal VIN. Connect the GND line with the terminal GND. • STP motor drives it in a Full step, by inputting an input signal such as follows into IN1/IN2. • For input signal to function generator, refer to p.9. To reverse motor rotation, make sure to input signal to outward direction. Waveform of LV8549MC evaluation board when driving stepper motor • Full-Step Drive LV8549MC Full-Step VCC=12V 200pps LV8549MC Full-Step VCC=12V 500pps T=5ms/div IOUT1 500mA/div T=2ms/div ※1 IOUT1 500mA/div VOUT1 10V/div VOUT1 10V/div IN1 5V/div IN1 5V/div IN2 5V/div IN2 5V/div *1. When the motor rotation is at a high speed, current gradient increases by the inductance of motor (L). 11/12 LV8549MC Application Note IC surface temperature when a motor is in operation (reference) 80 Tc[deg C] • 70 500pps Full‐Step 60 200pps Full‐Step 50 40 30 20 10 [Stepper motor driven by LV8549MC] Motor diameter: 20.5mm Coil resistance: 30.8Ω 0 0 20 40 60 t [sec] 80 100 120 Figure19 Temp of surface (VM=12V , 500/200pps) ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. 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