LB1945H

Ordering number : ENN*6193 LB1945H Monolithic Digital IC LB1945H PWM Current Control Type Stepping Motor Driver Preliminary Features PWM current control (external excitation) Load current digital selection (1–2, W1–2, and 2 phase excitation drives possible) Built-in upper/lower diode Simultaneous ON prevention function (feedthrough current prevention) Built-in thermal shutdown circuit Built-in noise canceler Package Dimensions unit: mm 3233-HSOP28H [LB1945H] 15.3 28 15 0.65 0.25 6.2 2.7 1 0.85 0.8 0.3 14 2.5max 0.1 2.25 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum motor supply voltage Output peak current Output continuous current Logic supply voltage Logic input voltage range Emitter output voltage Allowable power dissipation Operating temperature Storage temperature Symbol VBB max I OPEAK I O max VCC max VIN max VE max Pd max Topr Tstg Conditions tw ≤ 20 µs Ratings SANYO : HSOP28H Ta = 25˚C, with specified substrate* 30 1.0 0.8 6.0 –0.3 to VCC 1.0 1.9 –20 to +90 –55 to +150 Unit V A A V V V W °C °C * Specified substrate: 114.3 × 76.1 × 1.6 mm3, glass epoxy Allowable Operating Ranges at Ta = 25°C Parameter Motor supply voltage Logic supply voltage Reference voltage Symbol VBB VCC VREF Conditions Ratings 10 to 28 4.75 to 5.25 1.5 to 5.0 Unit V V V Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as lif...