Ordering number : ENN*7874 LA6570 Monolithic Linear IC 5CH Driver (BTL : 4CH, H-Bridge : 1CH) for CD Overview The LA6570 is a 5CH driver (BTL : 4CH, H-bridge : 1CH) for CD players. Features • 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 = 25°C Parameter Power supply voltage Symbol Allowable operation Pd max Maximum output current IO max Maximum input voltage VINB MUTE pin voltage Conditions Ratings VCC max Unit 14 Independent IC 0.8 Specific board * 2.0 Each output of CH1 to CH4 and H-bridge VMUTE V W 1 A 13 V 13 V Operating temperature Topr -30 to +85 °C Storage temperature Tstg -55 to +150 °C * Specific board size: 76.1 mm × 114.3 mm × 1.6 mm, board material: glass epoxy resin. Recommended Operating Conditions at Ta = 25°C Parameter Power supply voltage Symbol VCC Conditions Ratings Unit 5.6 to 13 V 61004 JO IM No.7874-1/3 LA6570 Electrical Characteristics at Ta = 25°C, VCC1 = VCC2 = 8V, VREF = 2.5V unless otherwise specified Parameter Symbol Conditions Ratings min typ Unit max [Whole] No-load current consumption ON ICC-ON BLT AMP output ON, LODING block OFF *1 30 50 mA No-load current consumption OFF ICC-OFF All output OFF *1 10 15 mA Thermal shutdown operating temperature TSD 175 200 °C -10 10 mV 1 VCC-1.5 Design guaranteed performance 150 [VREF-AMP] VREF-AMP offset voltage VREF-OFFSET VREF input voltage range VREF-IN VREF-OUT output current I-VREF-OUT CH1 input reference voltage 2 5 V mA [BTL AMP block] (CH1 to CH4) Output offset voltage VOFF Voltage differences between BTL AMP and each channel output. *2 Input voltage range VIN Input voltage range of input OP-AMP Output voltage VO For RL = 8Ω, between each VO+ and VO- *3 Closed circuit voltage gain Slew rate VG SR Gain between input and output, input OP-AMP:BUFFER -50 0 VMUTE-ON Output ON voltage, each MUTE *4 MUTE OFF voltage VMUTE-OFF Output OFF voltage, each MUTE *4 VCC-1.5 5.7 6.2 3.6 4 For output by AMP alone, it must be doubled MUTE ON voltage 50 mV V V 4.4 0.5 times V/µs 2 V 0.5 V VCC-1.5 V [Input AMP block] (CH1 to CH4) Input voltage range Output current (SINK) Output current (SOURCE) VIN-OP 0 SINK-OP SOURCE-OP 2 *5 Output offset voltage VOFF-OP CH1 input switching voltage 1 VSW-OP1 CH1 input AMP (B), external VREF selected *6 CH1 input switching voltage 2 VSW-OP2 CH1 input AMP (A), Internal VREF selected *6 300 mA µA 500 -10 10 mV 0.5 V 2 V [Loading block] (CH5, H-bridge) Output voltage Brake output saturation voltage VO-LOAD VCE-BREAK Input "L" level VIN-L Input "H" level VIN-H Between outputs for Normal/Reverse rotation, RL = 8Ω 5.7 6.5 For brake, output voltage *8 V 0.3 V 1 V 2 V [Power supply block] (with external PNP transistor : 2SB632K is used) 5V power supply output REG-IN SINK current VOUT REG-IN-SINK IO=200mA Base current of external PNP transistor *9 4.8 5.0 5 10 5.2 V mA Line regulation ∆VOLN 6V≤VCC≤12V, IO=200mA 10 100 mV Load regulation ∆VOLD 5mA≤IO≤200mA 10 100 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 (8Ω). 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 11kΩ 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