Details

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BUY LM48511SQ/NOPB https://www.utsource.net/itm/p/856396.html
LM48511 3W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier with Spread Spectrum; Package: LLP; No of Pins: 24; Qty per Container: 1000/Reel

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	-	2.7	-	5.5	V
Quiescent Current	IQ	No load, VDD = 5V	-	0.9	-	mA
Output Power (8Ω Load)	POUT	VDD = 5V, THD+N = 10%	0.6	-	-	W
Output Power (16Ω Load)	POUT	VDD = 5V, THD+N = 10%	0.3	-	-	W
Total Harmonic Distortion + Noise (THD+N)	-	VDD = 5V, POUT = 1W, 1kHz	-	0.1	-	%
Signal-to-Noise Ratio (SNR)	-	A-weighted, VDD = 5V	-	85	-	dB
Power Supply Rejection Ratio (PSRR)	-	1kHz, VDD = 5V	-	60	-	dB
Operating Temperature Range	TA	-	-40	-	85	°C
Storage Temperature Range	TSTG	-	-65	-	150	°C

Instructions for Use:

1. Supply Voltage:

   • Ensure the supply voltage is within the range of 2.7V to 5.5V.
   • Use a stable power source to avoid fluctuations that could affect performance.

2. Quiescent Current:

   • The quiescent current is typically 0.9mA at 5V. This value should be considered when designing the power supply to ensure efficient operation.

3. Output Power:

   • For an 8Ω load, the output power is 0.6W at 5V supply with a THD+N of 10%.
   • For a 16Ω load, the output power is 0.3W under the same conditions.

4. Total Harmonic Distortion + Noise (THD+N):

   • At 5V supply and 1kHz, the THD+N should not exceed 0.1% for optimal audio quality.

5. Signal-to-Noise Ratio (SNR):

   • The SNR is typically 85dB, which indicates a good signal quality with minimal noise.

6. Power Supply Rejection Ratio (PSRR):

   • The PSRR is 60dB at 1kHz, indicating effective rejection of power supply noise.

7. Operating Temperature:

   • The device can operate within a temperature range of -40°C to 85°C. Ensure the ambient temperature stays within these limits to avoid damage or reduced performance.

8. Storage Temperature:

   • When storing the device, keep it within a temperature range of -65°C to 150°C to prevent degradation.

9. Layout and Grounding:

   • Use proper layout techniques to minimize noise and interference. Ensure a solid ground plane and short, direct connections to the power supply and ground.

10. Thermal Management:

    • Although the device is designed to handle typical operating conditions, ensure adequate ventilation or heat sinking if used in high-power applications or in environments with limited airflow.

11. Input Signals:

    • Ensure input signals are within the specified range to avoid distortion or damage to the device.

12. Capacitors:

    • Use appropriate decoupling capacitors (e.g., 0.1μF ceramic and 10μF electrolytic) close to the power pins to filter out high-frequency noise and stabilize the power supply.

(For reference only)