LB1998 Datasheet (Sanyo) - Three-Phase Brushless Motor Driver

LB1998, Three-Phase Brushless Motor Driver

Pin number 19 Pin name VCC2 Pin voltage 4V to 13.6V Equivalent circuit Pin function Source side predrive voltage and constant current control amplifier voltage supply pin Power supply pin for all circuits except output transistors, source predriver, and low current control amplifier Reverse de

Ordering number : EN5979A LB1998 Monolithic Digital IC LB1998 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview The LB1998 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives.

Package Dimensions unit: mm 3234-HSOP28HC [LB1998] 15.3 6.2 2.7 28 15 Functions Current linear drive Control V type amplifier Top side current detection technique reduces loss voltage of current detection resistor.

Voltage effect of

LB1998 Features

* kΩ 3 50 kΩ A11205 Brake mode switching pin BRAKE: High

* > Short brake Low/Open

* > Reverse brake Brake mode changes when VCIN > VCREF. Continued on next page No. 5979-8/9 LB1998 Continued from preceding pa