LB1821

Ordering number : EN5686 Monolithic Digital IC LB1821M Power Brushless Motor Pre-Driver IC for OA Equipment Overview The LB1821M is a pre-driver IC that supports direct PWM drive and is appropriate for the power brushless motors used in office automation equipment. A motor drive circuit with the desired output capability (voltage and current characteristics) can be constructed by attaching a driver array at the IC output. The LB1821M includes on chip a speed control circuit that allows the motor speed to be varied using an external clock. Package Dimensions unit: mm 3148-QFP44MA [LB1821M] Features Direct PWM drive output Speed discriminator + PLL speed control circuit FG and integrating amplifiers Forward/reverse switching circuit Braking circuit (short braking) Speed lock detection output Full complement of on-chip protection circuits, including lock protection, current limiter, and thermal shutdown protection circuits. SANYO: QIP44MA Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum input current Output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max IREG max IO max Pd max Topr Tstg VREG pin UL, UV, and WL outputs Conditions Ratings 9 10 30 0.9 –20 to +80 –55 to +150 Unit V mA mA W °C °C Allowable Operating Ranges at Ta = 25°C Parameter Supply voltage Input current range FG Schmitt output applied voltage FG Schmitt output current Lock detection output current Symbo...