Optical disc ICs 4-channel BTL driver for CD players and CD-ROM drives BA5913FP-Y The BA5913FP-Y 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 25-pin HSOP package allows for application miniaturization. Applications CD players, CD-ROM drives Features 1) 4-channel BTL driver. 2) Wide dynamic range (typically 3.6V when VCC = 5V and RL = 8Ω). 3) Internal thermal shutdown circuit. 4) Gain is adjustable with attached resistor. 5) Internal standard operational amplifier. 6) Can enter power save mode with standby pin. 7) HSOP 25-pin power package allows for application miniaturization. Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 533 Optical disc ICs Block diagram Pin descriptions 534 BA5913FP-Y Optical disc ICs BA5913FP-Y Input / output circuit diagrams 535 Optical disc ICs Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 5V, BIAS = 2.5V, RL = 8Ω) 536 BA5913FP-Y Optical disc ICs BA5913FP-Y Measurement circuits 537 Optical disc ICs Measurement circuit switch table (1) Driver (OPIN 1, NF 1, OPRL 1, VOPIN = 2.5V) (2) 538 Operational amplifier (RL OFF) BA5913FP-Y Optical disc ICs BA5913FP-Y Application example 539 Optical disc ICs Operation notes (1) The BA5913FP-Y has a thermal shutdown circuit. The output current is muted when the chip temperature rises above 175C (typically). When the chip temperature falls to 150C (typically), the driver circuit starts up again. (2) Can be set that if the voltage of the standby pin (pin 8) is open or falls below 0.5V, the driver turns off and enters the power save mode. During normal operation, have pin 8 pulled up to over 2.0V. Electrical characteristic curves 540 BA5913FP-Y (3) Muting occurs when the bias pin (pin 2) drops below 1.0V (typically). Make sure it stays above 1.4V during normal use. (4) Muting occurs during thermal shutdown or a drop in the bias pin voltage. In each case, only drivers are muted. During muting, the output pins remain at the internal bias voltage, roughly (VCC–VF) / 2. (5) Connect the IC to a 0.1µF bypass capacitor between power supplies, at the base of the IC. (6) Connect the heat radiation fin to an external ground. Optical disc ICs BA5913FP-Y External dimensions (Units: mm) 541