BA5973FP

Optical disc ICs 3-channel BTL driver for CD, CD-ROM, DVD, and DVD-ROM BA5973FP The BA5973FP is a 3-channel BTL driver developed for use as the actuator and loading motor driver for CD and DVD players. Since the gain and frequency characteristics for the actuator can be set to any desired value with external components, it is can be used in a wide range of applications. FFeatures 1) 3-channel BTL driver for CD players. 2) The HSOP-28 package allows for the design of smaller sets. 3) Internal thermal shutdown circuit with hysteresis. 〈Actuator driver〉 4) Gain is adjustable with external resistor. 5) Contains both positive and negative input systems for compatibility with a variety of input formats such as reverse phase input. 〈Loading driver〉 6) Internal brake function. 7) Internal back-rush voltage protection diode. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions 701 Optical disc ICs FBlock diagram BA5973FP FPin descriptions 702 Optical disc ICs BA5973FP FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 12V, PVCC = 5V, f = 1kHz, RL = 8Ω) 703 Optical disc ICs FMeasurement circuit BA5973FP 704 Optical disc ICs FCircuit operation The analog switch pin 10, the mute pin 1, and the loading driver input logic operate as shown below. (1) Mute input (pin 1) truth table BA5973FP (3) Loading driver logic input (pins 13 and 17) truth table (2) Analog switch input (pin 10) truth table FApplication example 705 Optical disc...