View ba5921fp datasheet:

Optical disc ICs 4-channel BTL driver for CD player and CD-ROM drives BA5921FP The BA5921FP is an IC with an internal 4-channel BTL driver for CD players and CD-ROM driver actuators and motors, as well as an internal standard operational amplifier. In addition, the 28-pin HSOP package allows for application minia- turization. FApplications CD players, CD-ROM drives FFeatures 1) 4-channel BTL driver. 4) Internal thermal shutdown circuit. 2) HSOP 28-pin power package allows for application 5) Gain is adjustable with an attached resistor. miniaturization. 6) Internal standard operational amplifier. 3) Wide dynamic range. (typically 3.6V when VCC = 5V 7) Output current is mutable with an external mute pin. and RL = 8?) FAbsolute maximum ratings (Ta = 25_C) FRecommended operatin