LB1845

Ordering number: EN5505B Monolithic Digital IC LB1845 PWM Current Control Stepping Motor Driver Overview The LB1845 is a PWM current control type stepping motor driver that uses a bipolar drive scheme. It is particularly suitable for driving carriage and paper feed stepping motors in printers and similar products. Package Dimensions unit: mm 3147A-DIP28H [LB1845] Features PWM current control (fixed off time scheme) Digital load current selection function Sustained output voltage: 45 V Built-in thermal shutdown circuit SANYO: DIP28H Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Motor supply voltage Peak output current Continuous output current Logic block supply voltage Logic input voltage range Emitter output voltage Allowable power dissipation Operating temperature Storage temperature Symbol VBB IOPEAK IOMAX VCC VIN VE Pd max1 Pd max2 Topr Tstg Independent IC With an arbitrarily large heat sink tW = 20 µS Conditions Ratings 45 1.75 1.5 7.0 –0.3 to VCC 1.0 3.0 20.0 –20 to +85 –55 to +150 Unit V A A V V V W W °C °C Recommended Operating Ranges at Ta = 25°C Parameter Motor supply voltage Logic block supply voltage Reference voltage Symbol VBB VCC VREF Conditions Ratings 10 to 44.5 4.75 to 5.25 1.5 to 7.5 Unit V V V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN D3096HA (OT) No. 5505-1/7 LB1845 Electrical Characteristics at Ta = 25°C, VBB = 38 V, VCC = 5 V, ...