Description
LA4663 is a BTL 2 channel stereo power amplifier IC, it is a simple and powerful amplifier IC, which is very easy to make. It gives good output even at low voltage, if you also want to make this amplifier then here you will get the circuit diagram of LA4663 IC, with the help of which you can make this amplifier very easily.
Components Required
| Qty | Name |
|---|---|
| 1 | la4663 ic |
| 2 | 1uf 16v or 4.7uf 16v capacitor |
| 1 | 47uf 16v capacitor |
| 1 | 10uf 16v capacitor |
| 1 | 1000uf 16v capacitor |
| 4 | 104j pf capacitor |
| 4 | 2.2 ohm resistor |
| 1 | 22k resistor |
| 1 | Audio jack, Speakers, Soldering iron & wires |
Important considerations of the LA4663 IC
1. Maximum Rating
A slight variation in the operation conditions might cause device failure when operating close to the maximum ratings. Margins on supply voltage and other parameters should be provided so maximum ratings are not exceeded.
2. The protection circuits
Although the LA4663 includes built-in protection circuits, cautious operation is still necessary. Do not short pins of the devices. The protection circuit operates with the power, ground, or load short condition but does not always apply in conditions with less than 9V. When the brief is still present, the protection circuit can be reset to switch to standby mode or to turn off momentarily.
It includes thermal protection that will decrease the output signal if the IC's temperature exceeds 160°C so that no damage will occur.
3. PCBs — Printed Circuit Design PCB patterns so input lines are far from VCC and output lines to avoid distortion and oscillation. Use comprehensive and short power-ground lines at high output levels to ensure stability and avoid the problems coming from increased GND pin potential.
specifications of the LA4663
Overview
The LA4663 is a 2-channel general-purpose power amplifier IC. This BTL IC aims to have excellent quality audio with high-cost performance and ease of use.
Key Features
Operating supply voltage (VCCop): 5.5 to 22 V
Maximum Supply Voltage: 24 V (no signal)
Output Power:
Maximum Supply Voltage: 24 V (no signal)
Output Power:
- 16 W × 2 (VCC = 15 V, 6Ω load)
- 13 W × 2 (VCC = 12 V, 4Ω load)
- 6.5 W × 2 (VCC = 9 V, 4Ω
Maximum Input Ripple Rejection Ratio: 60 dB (typical)
Maximum Output Current: 3.5A/channel
Allowable Power Dissipation: 37.5 W (with sufficient heat sinking)
Operating temperature range: -20°C to +75°C
Storage Temperature Range: -40°C to +150°C
Circuit Diagram
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| Circuit Diagram |
Characteristics
1. Protection circuits
Built-in protection from shorting to ground, VCC, load shorting, and overheating.
A thermal protection circuit decreases the output if the IC temperature goes above 160°C to keep the IC from being damaged.
Protection circuits automatically recover when the fault condition is removed, and, in some cases, reset the fault condition.
2. Mute Circuit
Reducing the number of external components significantly reduces switching noise.
It supplies no distortion when starting up 0.6 to 0.7 seconds from start time—adjustable with the muting circuit.
3. Excellent Audio Quality
This reduces the impulse noise to a minimum and ensures high-fidelity audio output.
Considerations during PCB Design Spread input lines from VCC and output lines to avoid distortion and oscillation. This means that with a high output level, wide and short power-ground lines should be used to ensure stability. Applications: Suitable for radio/cassette with built-in CD/MD players, micro-component stereo systems, active speakers, electronic musical instruments, and other audio devices.
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