Features: ` High power: supports total output of 30 W+30 W. [EIAJ power] (VCC=14.4 V, THD=30 %, RL=4 )` Less pop noise.` Designed for excellent sound quality. (fL<10 Hz, fH=130 kHz)` Any rise time settable by an external capacitor.` Standby switch circuit on chip. (microcontroller supported)` V...
LA4725: Features: ` High power: supports total output of 30 W+30 W. [EIAJ power] (VCC=14.4 V, THD=30 %, RL=4 )` Less pop noise.` Designed for excellent sound quality. (fL<10 Hz, fH=130 kHz)` Any rise tim...
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` High power: supports total output of 30 W+30 W. [EIAJ power] (VCC=14.4 V, THD=30 %, RL=4 )
` Less pop noise.
` Designed for excellent sound quality. (fL<10 Hz, fH=130 kHz)
` Any rise time settable by an external capacitor.
` Standby switch circuit on chip. (microcontroller supported)
` Various protectors on chip. (output-to-ground short/ output-to-VCC short/ load short/ overvoltage/ thermal shutdown circuit)
` The LA4725 is pin-compatible with the LA4728.
Absolute maximum ratings | |
---|---|
Po max (MAX POWER) [W] |
- |
Supply Voltage [V] | - |
Po1 (THD=10%) [W] |
17 |
Supply Voltage [V] | 13.2 |
Po2 (THD=1%) [W] |
- |
Supply Voltage [V] | - |
channels | 2 |
output method | BTL |
Load Resistance[] | 4 |
Voltage gain [dB] | 40 |
Parameter | Symbol | Conditions | Ratings | Unit |
Maximum supply voltage | VCC max | 18 | V | |
Surge supply voltage | VCC surge | f 0.2 s, single giant pulse | 50 | V |
Maximum output current | Io peak | Per channel | 3.0 | A |
Allowable power dissipation | Pd max | With arbitrarily large heat sink | 32 | W |
Operating temperature | Topr | 35 to +85 | °C | |
Storage temperature | Tstg | 40 to +150 | °C |
The LA4725 is a BTL two-channel power IC for car audios 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 LA4725 provides powerful bass and clear treble.