BA5921FP

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 miniaturization. FApplications CD players, CD-ROM drives FFeatures 1) 4-channel BTL driver. 2) HSOP 28-pin power package allows for application miniaturization. 3) Wide dynamic range. (typically 3.6V when VCC = 5V and RL = 8Ω) 4) 5) 6) 7) Internal thermal shutdown circuit. Gain is adjustable with an attached resistor. Internal standard operational amplifier. Output current is mutable with an external mute pin. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 269 Optical disc ICs FBlock diagram BA5921FP FPin descriptions 270 Optical disc ICs FPin equivalent circuit diagrams BA5921FP 271 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V, BIAS = 2.5V, RL = 8Ω) BA5921FP 272 Optical disc ICs FMeasurement circuit BA5921FP 273 Optical disc ICs FMeasurement circuit switch table (1) Driver (OPIN!1, NF!1, OPRL!1, VOPIN = 2.5V) BA5921FP (2) Operational amplifier (RL!OFF) 274 Optical disc ICs FApplication example BA5921FP 275 Optical disc ICs FOperation notes (1) The BA5921FP has a thermal shutdown circuit. The output current is muted when the chip temperature rises above 175_C (typ...