BA6193

Optical disc ICs 2-channel reversible-motor driver BA6193 The BA6193 is a 2-channel motor driver for CD player changers and electric volume switches, and other applications as well. Because it uses a negative power supply, this IC uses the power supply of application products efficiently. FApplications CD players and CD-ROM drives with loading features, etc. FFeatures 1) Reversible-motor driver with dual independent channels. 2) Four modes forward, reverse, stop (free rotation) and brake are output according to control logic input (two inputs). 3) 4) 5) 6) Output voltage is set with the Vref pin. Internal power supply voltage drop mute circuit. Internal thermal shutdown circuit. Negative power supply. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 160 Optical disc ICs FBlock diagram BA6193 FPin descriptions 161 Optical disc ICs FInput / output circuits BA6193 FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 25_C, Vref = 2.5V) 162 Optical disc ICs FMeasurement circuit BA6193 163 Optical disc ICs FInput and output truth table BA6193 FApplication example 164 Optical disc ICs FOperation notes 1) The BA6193 has an internal shutdown circuit with hysteresis capabilities. Output current is muted when the chip temperature exceeds 175_C (typically) and restored when the chip temperature falls to 150_C (typically). 2) The output current is muted when the power supply voltage (VCC) drops below 3.0V. During mu...