LV8772

Ordering number : ENA1975 LV8772 Bi-CMOS LSI PWM Constant-Current Control Stepping Motor Driver http://onsemi.com Overview The LV8772 is a stepping motor driver, which is capable of micro-step drive and supports 4W 1-2 phase excitation. It is stepping motors used in office equipment and amusement applications. Features Low on resistance (upper side : 0.3Ω ; lower side : 0.25Ω ; total of upper and lower : 0.55Ω ; Ta = 25°C, IO = 2.5A) Excitation mode can be set to 2-phase, 1-2 phase, W1-2 phase , or 4W1-2 phase BiCDMOS process IC Excitation step proceeds only by step signal input Motor current selectable in four steps Output short-circuit protection circuit incorporated Unusual condition warning output pins No control power supply required Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output peak current Output current Logic input voltage MONI/EMO input voltage Symbol VM max IO peak IO max VIN Vmoni/Vemo Conditions tw ≤ 10ms, duty 20% Allowable power dissipation Operating temperature Pd max1 Pd max2 Topr 1 unit * Storage temperature Tstg Ratings 36 3.0 2.5 -0.3 to +6 -0.3 to +6 3.0 5.4 -20 to +85 -55 to +150 Unit V A A V V W W °C °C * Specified circuit board : 90.0mm×90.0mm×1.6mm, glass epoxy 2-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 maxi...