Features: `High power: supports total output of 30 W + 30 W (VCC = 13.2 V, THD = 30%, RL = 4 )`Supports RL = 2 (PO = 30 W when VCC = 13.2 V, THD = 10%)`Designed for excellent sound quality (fL < 10 Hz, fH = 130 kHz)`NF capacitorless`Any on time settable by external capacitor`Less pop noise`Stan...
LA4708: Features: `High power: supports total output of 30 W + 30 W (VCC = 13.2 V, THD = 30%, RL = 4 )`Supports RL = 2 (PO = 30 W when VCC = 13.2 V, THD = 10%)`Designed for excellent sound quality (fL < ...
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`High power: supports total output of 30 W + 30 W (VCC = 13.2 V, THD = 30%, RL = 4 )
`Supports RL = 2 (PO = 30 W when VCC = 13.2 V, THD = 10%)
`Designed for excellent sound quality (fL < 10 Hz, fH = 130 kHz)
`NF capacitorless
`Any on time settable by external capacitor
`Less pop noise
`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)
Parameter | Symbol | Conditions | Ratings | Unit |
Maximum supply voltage | VCC max 1 | No signal, t = 60 s | 24 | V |
VCC max 2 | 16 | V | ||
Surge supply voltage | VCC surge | t 0.2 s, single giant pulse | 50 | V |
Maximum output current | IO peak | Per channel | 4.5 | A |
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 LA4708 is a BTL two-channel power IC for car audio 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 LA4708 provides powerful bass and clear treble. In addition, the LA4708 features on-chip protectors and standby switch. The LA4708 is also pin-compatible with the LA4705NA (car stereo-use 17 W two-channel power IC), and can be substituted for the LA4705NA for higher power. (When the board is shared, pins 1 and 9 must be left open.)