Ordering number: EN 5897 Monolithic Linear IC LA6541 4-channel Bridge Driver for Compact Discs Overview Package Dimensions The LA6541 is a 4-channel bridge (BTL) driver with a 5 V power supply (uses an external PNP transistor) developed for compact discs. unit : mm 3227-HSOP24 [LA6541] 15.3 4.3 0.3 24 . 4-channel bridge (BTL) power amplifier. . I max. = 700 mA. . With mute circuit 13 0.65 Functions and Features 1 0.3 0.8 12 0.85 2.5max 1.3 7.9 (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). 0.25 0.1 2.25 . . 10.5 O SANYO : HSOP24 Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit VCC max 14 V Maximum input voltage VINB 13 V Mute pin voltage VMute 13 V 2.3 W Allowable power dissipation Pd max When using standard board 114.3 × 76.1 × 1.5 mm (material: glass epoxy) Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Ratings Unit Operating Conditions at Ta = 25°C Parameter Symbol Conditions Recommended operating voltage VCC 5.6 to 13 V Reset output source current IORH 0 to 200 µA Reset output sink current IORL 0 to 2 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 LA6541 Electrical Characteristics at Ta = 25°C, VCC = 8.0 V, VREF = 2.5 V Parameter Symbol ICC1 ICC2 No-load current drain 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 Buffer amplifier input voltage VBIN range Input voltage range VIN Output source voltage VO1 Note 1, when RL = 8.0 Ω Output sink voltage VO2 Note 2, when RL = 8.0 Ω 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 µA, 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 µF typ 20 15 max 40 35 Unit mA mA –50 +50 mV –50 +50 mV 1.5 VCC−1.5 V VCC−1.5 V V V dB V/µs V 1.0 5.0 5.6 1.8 9 0.15 1.2 2.4 4.75 5.0 20 50 5.25 100 150 V mV mV 4.73 4.98 100 4.3 100 10 5.23 200 V mV V mV ms 40 200 Notes: 1. Source voltage to ground when an 8 Ω load is connected between bridge amplifier outputs. 2. Sink voltage to ground when an 8 Ω 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 H L MUTE V O1 (Amp1) CH2 VO2 (Amp2) V O3 (Amp3) CH3 V O4 (Amp4) VO5 (Amp5) CH4 V O6 (Amp6) V O7 (Amp7) V O8 (Amp8) H H L L H H L L H L — — — — — — — — H L H H L L H H L 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 SANYO Level Level shift shift BTL BTL driver driver BTL BTL driver driver Level Level shift shift Regulator RESET Microcontroller equivalent (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. Pin Name Equivalent Circuit Description 1 VCC Power supply (shorted with pin 24) 2 Mute ON/OFF control for all BTL AMP outputs 3 VIN1 BTL AMP 1 input 4 VG1 BTL AMP 1 input (for gain control) 9 VG2 BTL AMP 2 input (for gain control) 10 VIN2 BTL AMP 2 input 15 VIN3 BTL AMP 3 input 16 VG3 BTL AMP 3 input (for gain control) 21 VG4 BTL AMP 4 input (for gain control) 22 VIN4 BTL AMP 4 input 5 VO1 BTL AMP 1 output (non-inverting side) 6 VO2 BTL AMP 1 output (inverting side) 7 VO3 BTL AMP 2 output (inverting side) 8 VO4 BTL AMP 2 output (non-inverting side) 17 VO5 BTL AMP 3 output (non-inverting side) 18 VO6 BTL AMP 3 output (inverting side) 19 VO7 BTL AMP 4 output (inverting side) 20 VO8 BTL AMP 4 output (non-inverting side) 11 REGOUT 12 REGIN 13 RES 14 Cd Reset output delay time setting (with capacitor) 23 VREF Reference voltage input for level shift circuit 24 VCC Power supply (shorted with pin 1) Connection for collector of external transistor (PNP); 5 V supply output Connection for base of external transistor (PNP) Reset output 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