Optical disc ICs 1-channel BTL driver for CD players BA6195FP-Y / BA6195 The BA6195FP-Y and BA6195 are ICs for CD players and have one internal BTL power driver circuit and one operational amplifier circuit with a wide output dynamic range. The wide dynamic range and internal operational amplifier make these ICs ideal for low voltage drive. The driver’s internal level shift circuit reduces the number of attached components needed. Applications CD players, CD-ROM drives and other optical disc devices Features 1) HSOP 25-pin power package allows for miniaturization of applications (BA6195FP-Y). 2) Wide dynamic range. (typically 5.4V when VCC = 8V, RL = 8Ω) 3) Internal thermal shutdown circuit with hysteresis. 4) Internal level shift circuit, for a minimal number of attached components. 5) Internal operational amplifier with wide dynamic range. Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 185 Optical disc ICs Block diagram Pin descriptions (BA6195) 186 BA6195FP-Y / BA6195 Optical disc ICs BA6195FP-Y / BA6195 Pin descriptions (BA6195FP-Y) 187 Optical disc ICs Input / output circuits Parentheses indicate pin numbers for BA6195FP-Y 188 BA6195FP-Y / BA6195 Optical disc ICs BA6195FP-Y / BA6195 Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 8V, f = 1kHz, RL = 8Ω) 189 Optical disc ICs Measurement circuit switch table 190 BA6195FP-Y / BA6195 Optical disc ICs BA6195FP-Y / BA6195 Measurement circuits BA6195 191 Optical disc ICs BA6195FP-Y 192 BA6195FP-Y / BA6195 Optical disc ICs BA6195FP-Y / BA6195 Application examples 193 Optical disc ICs 194 BA6195FP-Y / BA6195 Optical disc ICs Operation notes 1) The thermal shutdown circuit mutes the output current when the chip temperature rises above 175C (typically). Hysteresis width is set at 25C (typically), and muting is canceled when the chip temperature drops below 150C. 2) The output current can be muted by raising the external mute pin above 2.0V. Pin 14 should be pulled down below 0.5V during normal operation. BA6195FP-Y / BA6195 3) Muting occurs during thermal shutdown and external muting. In each case, only the drivers are muted. During muting, the output pins remain at the internal bias voltage, roughly (VCC / 2). 4) Connect the IC to a 0.1µF bypass capacitor to the power supply, at the base of the IC. 5) Connect the radiating fin to an external ground (BA6195FP-Y). Electrical characteristic curves 195 Optical disc ICs External dimensions (Units: mm) 196 BA6195FP-Y / BA6195