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| 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. FApplications CD players, CD-ROM drives FFeatures 1) 4-channel BTL driver. 2) Wide dynamic range (typically 3.6V when VCC = 5V and RL = 8). 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. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 533 Optical disc ICs FBlock diagram BA5913FP-Y FPin descriptions 534 Optical disc ICs FInput / output circuit diagrams BA5913FP-Y 535 Optical disc ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5V, BIAS = 2.5V, RL = 8) BA5913FP-Y 536 Optical disc ICs FMeasurement circuits BA5913FP-Y 537 Optical disc ICs BA5913FP-Y Measurement circuit switch table (1) Driver (OPIN ! 1, NF ! 1, OPRL ! 1, VOPIN = 2.5V) (2) Operational amplifier (RL ! OFF) 538 Optical disc ICs FApplication example BA5913FP-Y 539 Optical disc ICs FOperation notes (1) The BA5913FP-Y has a thermal shutdown circuit. The output current is muted when the chip temperature rises above 175_C (typically). When the chip temperature falls to 150_C (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. 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 0.1F bypass capacitor between power supplies, at the base of the IC. (6) Connect the heat radiation fin to an external ground. FElectrical characteristic curves 540 Optical disc ICs FExternal dimensions (Units: mm) BA5913FP-Y 541 |
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