LB11872H

www.DataSheet4U.com Ordering number : ENN7257A Monolithic Digital IC LB11872H Three-Phase Brushless Motor Driver for Polygonal Mirror Motors Overview The LB11872H is a three-phase brushless motor driver developed for driving the motors used for the polygonal mirror in laser printers and similar applications. It can implement, with a single IC chip, all the circuits required for polygonal mirror drive, including speed control and driver functions. The LB11872H can implement motor drive within minimal drive noise due to its use of current linear drive. Package Dimensions unit: mm 3233A-HSOP28H [LB11872H] 15.2 (6.2) 0.65 0.25 28 15 Functions and Features Three-phase bipolar current linear drive + midpoint control circuit PLL speed control circuit Speed is controlled by an external clock signal. Supports Hall FG operation. Built-in output saturation prevention circuit Phase lock detection output (with masking function) Includes current limiter, thermal protection, rotor constraint protection, and low-voltage protection circuits on chip. On-chip output diodes. 1 (0.8) (2.25) 0.8 2.0 14 0.3 2.45max 0.1 2.7 SANYO: HSOP28H 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 Mounted on a PCB (114.3 × 76.1 × 1.6 mm, glass epoxy) Conditions Ra...