BA6997FM

Optical disc ICs 4-channel BTL driver for CD players BA6997FP / BA6997FM The BA6997FP and BA6997FM, both designed for CD players, have an internal 4-channel BTL driver and 5V regulator (which requires attached PNP transistor), as well as switches for the 5V regulator and temperature monitor pins. FApplications CD players and other optical disc devices FFeatures 1) 4-channel BTL driver for CD players. 2) Wide dynamic range. 3) Internal thermal shutdown circuit. FAbsolute maximum ratings (Ta = 25_C) 4) Internal level shift circuit, for a minimum of attached components. 5) Internal 5V regular with switch. FRecommended operating conditions (Ta = 25_C) 403 Optical disc ICs FBlock diagram BA6997FP/BA6997FM 404 Optical disc ICs FPin descriptions BA6997FP/BA6997FM 405 Optical disc ICs BA6997FP/BA6997FM FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8Ω) 406 Optical disc ICs FApplication example BA6997FP/BA6997FM 407 Optical disc ICs FOperation notes (1) The BA6997FP and BA6997FM have an internal thermal shutdown circuit. Output current is muted when the chip temperature exceeds 175_C (typically). (2) The output current can be muted by opening the mute pin (pin 9) voltage or lowering it below 0.5V. This pin should be pulled up above 2.0V during normal operation. When muting occurs, the output pins output the internal bias voltage, roughly VCC / 2. (3) The regulator can be turned off by opening the regulator switch (pin 10) or ...