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| Ordering number : ENN*7874 LA6570 Overview Features Monolithic Linear IC 5CH Driver (BTL : 4CH, H-Bridge : 1CH) for CD The LA6570 is a 5CH driver (BTL : 4CH, H-bridge : 1CH) for CD players. * Built-in POWER AMP 5CH (bridge connection (BTL) : 4CH, H-bridge : 1CH) * IO max 1A * Built-in level shift circuit (Except H-bridge.) * Built-in MUTE circuit (output ON/OFF). (Operates only for CH1 to CH4 BTL AMP. No operation for H-bridge and 5VREG.) * Built-in 5V regulator (with external PNP transistor) * Implements VREF switching function (Select H for external, or L for internal (2.5 V)) * Built-in overheat protection circuit (Thermal shutdown) Specifications Maximum Ratings at Ta = 25C Parameter Power supply voltage Allowable operation Maximum output current Maximum input voltage MUTE pin voltage Operating temperature Storage temperature Symbol VCC max Pd max IO max VINB VMUTE Topr Tstg Independent IC Specific board * Each output of CH1 to CH4 and H-bridge Conditions Ratings 14 0.8 2.0 1 13 13 -30 to +85 -55 to +150 Unit V W A V V C C * Specific board size: 76.1 mm x 114.3 mm x 1.6 mm, board material: glass epoxy resin. Recommended Operating Conditions at Ta = 25C Parameter Power supply voltage Symbol VCC Conditions Ratings 5.6 to 13 Unit V 61004 JO IM No.7874-1/3 LA6570 Electrical Characteristics at Ta = 25C, VCC1 = VCC2 = 8V, VREF = 2.5V unless otherwise specified Parameter [Whole] No-load current consumption ON No-load current consumption OFF Thermal shutdown operating temperature [VREF-AMP] VREF-AMP offset voltage VREF input voltage range VREF-OUT output current [BTL AMP block] (CH1 to CH4) Output offset voltage Input voltage range Output voltage Closed circuit voltage gain Slew rate MUTE ON voltage MUTE OFF voltage [Input AMP block] (CH1 to CH4) Input voltage range Output current (SINK) Output current (SOURCE) Output offset voltage CH1 input switching voltage 1 CH1 input switching voltage 2 [Loading block] (CH5, H-bridge) Output voltage Brake output saturation voltage Input "L" level Input "H" level VO-LOAD VCE-BREAK VIN-L VIN-H VOUT REG-IN-SINK VOLN VOLD IO=200mA Base current of external PNP transistor *9 6VVCC12V, IO=200mA 5mAIO200mA 2 Between outputs for Normal/Reverse rotation, RL = 8 For brake, output voltage *8 5.7 6.5 0.3 1 V V V V VIN-OP SINK-OP SOURCE-OP VOFF-OP VSW-OP1 VSW-OP2 CH1 input AMP (B), external VREF selected *6 CH1 input AMP (A), Internal VREF selected *6 *5 0 2 300 -10 2 0.5 500 10 VCC-1.5 V mA A mV V V VOFF VIN VO VG SR VMUTE-ON VMUTE-OFF Voltage differences between BTL AMP and each channel output. *2 Input voltage range of input OP-AMP For RL = 8, between each VO+ and VO- *3 Gain between input and output, input OP-AMP:BUFFER For output by AMP alone, it must be doubled Output ON voltage, each MUTE *4 Output OFF voltage, each MUTE *4 2 0.5 -50 0 5.7 3.6 6.2 4 0.5 4.4 50 VCC-1.5 mV V V times V/s V V VREF-OFFSET VREF-IN I-VREF-OUT CH1 input reference voltage -10 1 2 5 10 VCC-1.5 mV V mA ICC-ON ICC-OFF TSD BLT AMP output ON, LODING block OFF *1 All output OFF *1 Design guaranteed performance 150 30 10 175 50 15 200 mA mA C Symbol Conditions Ratings min typ max Unit [Power supply block] (with external PNP transistor : 2SB632K is used) 5V power supply output REG-IN SINK current Line regulation Load regulation 4.8 5 5.0 10 10 10 100 100 5.2 V mA mV mV *1. Total current consumption of VCC1 and VCC2 when non-load. *2. Input AMP is BUFFER AMP. *3. Voltage differences between both ends of load (8). Output is saturated. *4. When MUTE is "H", output is ON. When MUTE is "L", output is OFF (HI impedance). *5. Input OP-AMP SOURCE is constant current. Since 11k resistance to the next level is loaded, special care should be taken for the gain setting of input OP-AMP. *6. When VIN1-SW is "L", select AMP-A for input AMP and internal VREF (nearly equal to 2.5V) for VREF. When VIN-SW is "H", select AMP-B for input AMP and external VREF (nearly equal to VREF-IN) for VREF. *7. Voltage of upper side (SOURCE) and lower side (SINK). For Normal/Reverse rotation. Output voltage is obtained by subtracting this value from VCC. *8. Brake is short (GND) brake. Output of SINK side is ON. *9. 5VREG has built-in dropping protection circuit. Operates when base current is 10mA (TYP). No.7874-2/3 LA6570 Package Dimensions unit : mm 3251 PS No.7874-3/3 |
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