LA4906 Datasheet – 17W, BTL 2-Channel Power Amplifier
17W, 2-channel BTL AF High-efficiency Power Amplifier for Car Audio System
LA4906 overview
The LA4906 is a 17W, 2-channel BTL AF High-efficiency Power Amplifier for Car Audio System made by Sanyo, supplied in an SIP-23HZ Type package. The absolute maximum ratings table on this page lists the 5 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the LA4906 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The LA4906 is a BTL two-channel power amplifier for use in car audio systems. It uses a signal-following switching technique in the power supply for the amplifier output stage and a newly-developed nonlinear amplifier that features nonlinear characteristics in the signal system. These features hold increases in the number of external components to a minimum, and reduce power dissipation (and thus heat generation) in the practical operating region to about 1/2 that of earlier class B amplifier ICs. This can contribute significantly to miniaturization and weight reduction in the heat sink and to reduction of the heat generated within the end product case.
Datasheet
LA4906 features
- Power dissipation reduced by 50% (for music at average power levels, as compared to earlier Sanyo products)
- The number of required signal-following switching circuits has been reduced to just one circuit for two channels, reducing the number of external components.
- The output is a pure analog signal; no switching noise whatsoever appears on the output lines.
- Uses a single-voltage power supply from 8 to 18 V.
- Provides a full range of built-in protection circuits, including shorting of output pin to VCC, shorting of output pin to ground, overvoltage, and thermal shutdown protection.
- Built-in standby switch
- Clipping detection function
LA4906 pinout
Absolute maximum ratings
| Parameter | Symbol | Value | Unit | Conditions |
|---|---|---|---|---|
| Maximum supply voltage | VCC max1 | 18 | V | With no signal, t = 1 minute |
| Maximum output current | IO Peak | 4.5 | A | Per channel |
| Allowable power dissipation | Pd max | 37.5 | W | With an arbitrarily large heat sink |
| Operating temperature | Topr | –35 to +85 | °C | |
| Storage temperature | Tstg | –40 to +150 | °C |
LA4906 applications
- Car Audio Systems
- Portable Audio Players
- Home Stereo Systems
- Boomboxes
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