LV8747TA

Ordering number : ENA2019 LV8747TA Bi-CMOS LSI PWM Constant-Current Control Stepping Motor Driver and Switching Regulator Controller http://onsemi.com Overview The LV8747TA is a PWM constant-current control stepping motor driver and switching regulator controller IC. Features Two circuits of PWM constant-current control stepping motor driver incorporated Control of the stepping motor to W1-2 phase excitation possible Output-stage push-pull composition enabling high-speed operation Two circuits of switching regulator controller incorporated Thermal shutdown circuit incorporated Timer latch type short-circuit protection circuit incorporated Motor driver control power incorporated Output short-circuit protection circuit incorporated Chopping frequency selectable High-precision reference voltage circuit incorporated Upper and lower regenerative diodes incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VM max 38 V Driver output peak current 1 Driver output continuous current 1 Driver output peak current 2 Driver output continuous current 2 Regulator output current Allowable power dissipation 1 MDIO peak1 MDIO max1 MDIO peak2 MDIO max2 SWIO max Pd max1 OUT1/OUT2 tw ≤ 10ms, duty 20% OUT1/OUT2 OUT3/OUT4 tw ≤ 10ms, duty 20% OUT3/OUT4 OUT5/OUT6 tw ≤ 1μs Independent IC 1.75 A 1.5 A 0.8 A 0.5 A 500 mA 0.4 W Allowable power dissipation 2 Pd max2 Our recommended four-la...