LV8774Q Bi-CDMOS LSI www.onsemi.com PWM Constant-Current Control Stepper Motor Driver Overview The LV8774 is a 2-channel H-bridge driver IC, and can drive a stepper motor or two brushed DC motors. A stepper motor driver supports micro-step drive with 1/16-step resolution, and two brushed motor drivers support forward, reverse, brake, and standby functions. It is ideally suited for driving brushed DC motors and stepper motors used in office equipment and amusement applications. Feature VQFN44L ( 6x6 ) Single-channel PWM current control stepper motor driver (or two DC motor driver) BiCDMOS process IC Low on resistance (upper side : 0.3 lower side : 0.25 total of upper and lower : 0.55 Ta = 25 C, I = 2A) O Micro-step mode can be set to Full-step, Half-step, Quarter-step , or 1/16-step Excitation step proceeds only by step signal input with stepper motor Motor current selectable in four steps Output short-circuit protection circuit (selectable from latch-type or auto-reset-type) Unusual condition warning output pins No control power supply required Typical Applications Stepper/Brush DC Motors , Computing & Peripherals , Industrial Printers , Document Scanner , PoE Security Camera , Slot Machine , Vending Machine ,etc Specifications Absolute Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage VM max VM , VM1 , VM2 36 V Output peak current I peak Tw 10ms , duty 20% , Per 1ch 2.5 A O Output current I max Per 1ch 2 A O Logic input voltage V ATT1, ATT2, EMM, RST/BLK, STEP/DC22, -0.3 to +6 V IN FR/DC21, MD2/DC12, MD1/DC11, DM, OE, ST MONI/EMO input voltage Vmoni/Vemo -0.3 to +6 V Allowable power dissipation Pd max * 3.60 W Operating temperature Topr -20 to +85 C Storage temperature Tstg -55 to +150 C *Specified circuit board : 57.0mmx57.0mmx1.6mm, glass epoxy 4-layer board, with backside mounting. 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 those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. ORDERING INFORMATION See detailed ordering and shipping information on page 28 of this data sheet. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number : June 2015 - Rev. 2 LV8774Q/D LV8774Q Recommended Operating Conditions at Ta = 25 C Parameter Symbol Conditions Ratings Unit Supply voltage range VM VM , VM1 , VM2 9 to 32 V Logic input voltage V ATT1 , ATT2 , EMM , RST/BLK , STEP/DC22 , 0 to 5.5 V IN FR/DC21 , MD2/DC12 , MD1/DC11 , DM , OE , ST VREF input voltage range VREF 0 to 3 V Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. Electrical Characteristics at Ta = 25C, VM = 24V, VREF = 1.5V Ratings Parameter Symbol Conditions Unit min typ max Standby mode current drain IMst ST = L , I(VM)+I(VM1)+I(VM2) 100 400 A Current drain IM ST = H, OE = L, with no load 3.2 5mA I(VM)+I(VM1)+I(VM2) VREG5 output voltage Vreg5 I = -1mA 4.5 5 5.5 V O Thermal shutdown temperature TSD Design guarantee 150 180 200 C Thermal hysteresis width TSD Design guarantee 40 C Motor driver Output on resistance Ronu I = 2A, Upper-side on resistance 0.3 0.4 O Rond I = 2A, Lower-side on resistance 0.25 0.33 O Output leakage current Ileak 50 A O Diode forward voltage VD ID = -2A 1.2 1.4 V Logic pin input current I L ATT1 , ATT2 , EMM , RST/BLK , 48 12 A IN STEP/DC22 , FR/DC21 , MD2/DC12 , MD1/DC11 , DM , OE , ST , V = 0.8V IN I H ATT1 , ATT2 , EMM , RST/BLK , 30 50 70 A IN STEP/DC22 , FR/DC21 , MD2/DC12 , MD1/DC11 , DM , OE , ST , V = 5V IN Logic input voltage High V h ATT1 , ATT2 , EMM , RST/BLK , 2.0 5.5 V IN STEP/DC22 , FR/DC21 , MD2/DC12 , Low Vl 0 0.8V IN MD1/DC11 , DM , OE , ST Current setting 1/16 step Vtdac0 4W Step 0 (When initialized : channel 1 0.291 0.3 0.309 V comparator resolution comparator level) threshold voltage Vtdac1 4W Step 1 (Initial state+1) 0.291 0.3 0.309 V (current step Vtdac2 4W Step 2 (Initial state+2) 0.2850.294 0.303V switching) Vtdac3 4W Step 3 (Initial state+3) 0.2790.288 0.297V Vtdac4 4W Step 4 (Initial state+4) 0.2670.276 0.285V Vtdac5 4W Step 5 (Initial state+5) 0.2550.264 0.273V Vtdac6 4W Step 6 (Initial state+6) 0.2400.249 0.258V Vtdac7 4W Step 7 (Initial state+7) 0.2220.231 0.240V Vtdac8 4W Step 8 (Initial state+8) 0.2010.21 0.219V Vtdac9 4W Step 9 (Initial state+9) 0.1800.189 0.198V Vtdac10 4W Step 10 (Initial state+10) 0.1570.165 0.173V Vtdac11 4W Step 11 (Initial state+11) 0.1340.141 0.148V Vtdac12 4W Step 12 (Initial state+12) 0.1070.114 0.121V Vtdac13 4W Step 13 (Initial state+13) 0.0800.087 0.094V Vtdac14 4W Step 14 (Initial state+14) 0.0530.06 0.067V Vtdac15 4W Step 15 (Initial state+15) 0.0230.03 0.037V Quarter step Vtdac0 W Step 0 (When initialized : channel 1 0.291 0.3 0.309 V resolution comparator level) Vtdac4 W Step 4 (Initial state+1) 0.2670.276 0.285V Vtdac8 W Step 8 (Initial state+2) 0.2010.21 0.219V Vtdac12 W Step 12 (Initial state+3) 0.1070.114 0.121V Continued on next page www.onsemi.com 2