LB1997

Ordering number : EN5978A LB1997 Monolithic Digital IC LB1997 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview The LB1997 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives. Package Dimensions unit: mm 3222-HSOP28 [LB1997] 28 15 Functions 5.6 1.0 0.2 Allowable power dissipation, Pd max – W Current linear drive Control V type amplifier Separate power supply for output upper side bias circuit allows low output saturation by boosting this power supply only (useful for 5V power supply types). Upper side current detection technique reduces loss voltage of current detection resistor. Voltage effect of this resistor reduces internal current drain of IC. Built-in short braking circuit Built-in reverse blocking circuit Hall FG output Built-in S/S function Built-in current limiter circuit Built-in Hall power supply Built-in thermal shutdown circuit V type control/single-side control switching pin allows CLV and CAV operation. 1 0.8 2.7 0.3 14 15.2 0.8 2.0 Pd max – Ta 1.6 1.5 With substrate 1.2 0.8 IC only 0.4 0.6 0 –20 0 Ambient temperature, Ta – °C 20 40 0.1 1.8max SANYO : HSOP28 60 75 80 0.5 7.6 100 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 life-support systems, aircraft's control systems, or other applications whose failure can be reasonably e...