Features: `High power: supports total output of 25 W + 25 W (VCC = 14.4 V, THD = 30%, RL = 4 )`Less pop noise`Designed for excellent sound quality (fL < 10 Hz, fH = 130 kHz)`Any on time settable by external capacitor`Standby switch circuit on chip (microprocessor supported)`Various protectors o...
LA4705: Features: `High power: supports total output of 25 W + 25 W (VCC = 14.4 V, THD = 30%, RL = 4 )`Less pop noise`Designed for excellent sound quality (fL < 10 Hz, fH = 130 kHz)`Any on time settable ...
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`High power: supports total output of 25 W + 25 W (VCC = 14.4 V, THD = 30%, RL = 4 )
`Less pop noise
`Designed for excellent sound quality (fL < 10 Hz, fH = 130 kHz)
`Any on time settable by external capacitor
`Standby switch circuit on chip (microprocessor supported)
`Various protectors on chip (output-to-ground short/output-to-VCC short/ load short/overvoltage/thermal shutdown circuit)
`NF capacitorless
`Supports RL = 2
Parameter | Symbol | Conditions | Ratings | Unit |
Maximum supply voltage | VCC max 1 | No signal, t = 60 s | 24 | V |
VCC max 2 | With signal | 18 | V | |
Surge supply voltage | VCC surge | t 0.2 s, single giant pulse | 50 | V |
Allowable power dissipation | Pd max | Arbitrarily large heat sink | 37.5 | W |
Operating temperature | Topr | 35 to +85 | °C | |
Storage temperature | Tstg | 40 to +150 | °C |
The LA4705 is a BTL two-channel power IC for car audio and radio-cassette players developed in pursuit of excellent sound quality. Low-region frequency characteristics have been improved through the use of a new NF capacitorless circuit, and crosstalk which causes "muddy" sound has been reduced by improving both circuit and pattern layout. As a result, the LA4705 provides powerful bass and clear treble. In addition, the LA4705 features on-chip protectors and standby switch.