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| Ordering number: EN 5897 Monolithic Linear IC LA6541 4-channel Bridge Driver for Compact Discs Overview The LA6541 is a 4-channel bridge (BTL) driver with a 5 V power supply (uses an external PNP transistor) developed for compact discs. Package Dimensions unit : mm 3227-HSOP24 [LA6541] 15.3 Functions and Features 4.3 24 0.3 0.65 7.9 2.25 13 . 4-channel bridge (BTL) power amplifier. . I max. = 700 mA. . With mute circuit O 0.3 0.8 0.1 SANYO : HSOP24 Specifications Maximum Ratings at Ta = 25C Parameter Maximum supply voltage Maximum input voltage Mute pin voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VINB VMute Pd max Topr Tstg When using standard board 114.3 x 76.1 x 1.5 mm (material: glass epoxy) Conditions Ratings 14 13 13 2.3 -20 to +75 -55 to +150 Unit V V V W C C Operating Conditions at Ta = 25C Parameter Recommended operating voltage Reset output source current Reset output sink current Symbol VCC IORH IORL Conditions Ratings 5.6 to 13 0 to 200 0 to 2 Unit V A mA SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 73098HA (II) No.5897- 1/6 2.5max . . (Affects all amplifier outputs, Amp 1 to Amp 8). (When the mute voltage is low, the outputs turn off; when the mute voltage is high, the outputs turn on). 5.0 V regulator built in (Uses external PNP transistor). Reset circuit built in (The reset output delay time can be adjusted through an external capacitor). 1 12 0.85 0.25 1.3 10.5 LA6541 Electrical Characteristics at Ta = 25C, VCC = 8.0 V, VREF = 2.5 V Parameter No-load current drain Symbol ICC1 ICC2 VOF1 Output offset voltage VOF2 Conditions When all amplifier outputs are on (Mute high) When all amplifier outputs are off (Mute low) Amplifier 1 to 2 (VO1 to VO2), Amplifier 3 to 4 (VO3 to VO4) Amplifier 5 to 6 (VO5 to VO6), Amplifier 7 to 8 (VO7 to VO8) min typ 20 15 max 40 35 +50 +50 VCC-1.5 VCC-1.5 5.6 1.8 9 0.15 1.2 5.0 20 50 4.98 100 4.3 100 10 2.4 Unit mA mA mV mV V V V V dB V/s V V mV mV V mV V mV ms -50 -50 1.5 1.0 5.0 Buffer amplifier input voltage VBIN range Input voltage range VIN Output source voltage VO1 Note 1, when RL = 8.0 Output sink voltage VO2 Note 2, when RL = 8.0 Closed-circuit voltage gain VG Between bridge amplifiers Slew rate SR Mute on voltage VMute Note 3 [Power Supply] (with 2SB632K connected externally) Output voltage VOUT1 IO = 200 mA Line regulation VOLN1 5.6 V % VIN1 % 12 V Load regulation VOLD1 5 mA % IO % 200 mA [Reset] High reset output voltage VORH IORH = 200 A, Cd pin open Low reset output voltage VORL ISRL = 2 mA, Cd is shorted to GND Reset threshold voltage VRT Note 4 Reset hysteresis voltage Vhys Note 5 Reset output delay time td Cd = 0.1 F 4.75 5.25 100 150 5.23 200 200 4.73 40 Notes: 1. Source voltage to ground when an 8 load is connected between bridge amplifier outputs. 2. Sink voltage to ground when an 8 load is connected between bridge amplifier outputs. 3. When the mute signal is high, all amplifier outputs turn on, and when low, all amplifier outputs turn off. When the mute signal is low, amplifier output is undefined. 4. 5 V supply voltage when the reset output goes low. 5. Potential difference from the 5 V supply voltage when the reset output goes low and when it goes high. Allowable power dissipation, Pd max - W Pd max - Ta With PCB 2.3 1.38 Ambient temperature, Ta - C Truth Table CH1 Input MUTE H L H L V O1 (Amp1) H -- L -- VO2 (Amp2) L -- H -- CH2 V O3 (Amp3) L -- H -- V O4 (Amp4) H -- L -- CH3 VO5 (Amp5) H -- L -- V O6 (Amp6) L -- H -- CH4 V O7 (Amp7) L -- H -- V O8 (Amp8) H -- L -- H L * The ``--'' symbol means ``amplifier output is OFF.'' No. 5897- 2/6 LA6541 Block Diagram Level shift Level shift BTL driver BTL driver BTL driver BTL driver Level shift Level shift Regulator RESET No. 5897- 3/6 LA6541 Sample Application Circuit To VCC Microcontroller Level shift Level shift BTL driver BTL driver BTL driver BTL driver Level shift Level shift Regulator SANYO equivalent RESET Microcontroller (connected to pins 1 and 24) Note: Use a delay capacitor (Cd) whose capacitance does not change much according to the temperature. No. 5897- 4/6 LA6541 Pin Functions Pin No. 1 2 Pin Name VCC Mute Equivalent Circuit Description Power supply (shorted with pin 24) ON/OFF control for all BTL AMP outputs 3 4 9 10 15 16 21 22 VIN1 VG1 VG2 VIN2 VIN3 VG3 VG4 VIN4 BTL AMP 1 input BTL AMP 1 input (for gain control) BTL AMP 2 input (for gain control) BTL AMP 2 input BTL AMP 3 input BTL AMP 3 input (for gain control) BTL AMP 4 input (for gain control) BTL AMP 4 input 5 6 7 8 17 18 19 20 VO1 VO2 VO3 VO4 VO5 VO6 VO7 VO8 BTL AMP 1 output (non-inverting side) BTL AMP 1 output (inverting side) BTL AMP 2 output (inverting side) BTL AMP 2 output (non-inverting side) BTL AMP 3 output (non-inverting side) BTL AMP 3 output (inverting side) BTL AMP 4 output (inverting side) BTL AMP 4 output (non-inverting side) 11 12 13 14 23 24 REGOUT REGIN RES Cd VREF VCC Connection for collector of external transistor (PNP); 5 V supply output Connection for base of external transistor (PNP) Reset output Reset output delay time setting (with capacitor) Reference voltage input for level shift circuit Power supply (shorted with pin 1) Note: GND (minimum electrical potential) should be connected to the center frame of the pin. No. 5897- 5/6 LA6541 Reset Operation No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of July, 1998. Specifications and information herein are subject to change without notice. PS No. 5897- 6/6 |
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