LB1929

Ordering number : ENN7099 Monolithic Digital IC LB1929 Three-Phase Brushless Motor Driver for OA Products Overview The LB1929 is a three-phase brushless motor driver that is optimal for driving the drum and paper feed motors in laser printers and plain-paper copiers. It can provide drive with minimal power loss due to direct PWM drive technique, features on-chip peripheral circuits such as a speed control circuit and an FG amplifier, and can implement a drive circuit in a single chip. Package Dimensions unit: mm 3147B-DIP28H [LB1929] 28 15 R1.7 Functions and Features Three-phase bipolar drive (30 V, 3.5 A) Direct PWM drive Built-in low side output kickback absorption diode Control technique that combines a speed discriminator with PLL speed control Speed lock detection output Built-in forward/reverse switching circuit Full complement of built-in protection circuits, including current limiter, thermal protection circuit, and motor lockup protection circuit. 1 20.0 26.75 4.0 12.7 11.2 8.4 14 (1.81) 1.78 0.6 1.0 SANYO: DIP-28H (500 mil) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output current Allowable power dissipation 1 Allowable power dissipation 2 Operating temperature Storage temperature Symbol VCC max IO max Pd max1 Pd max2 Topr Tstg T ≤ 500 ms Independent IC Infinitely large heat sink Conditions Ratings 30 3.5 3 20 –20 to +80 –55 to +150 Unit V A W W °C °C Allowable Operating Range at Ta = 25°C Parameter Su...