Features • Click and Pop Suppression • Low 0.01μA Shutdown Current • 76% Efficiency • Filterless Class D • 2.7V - 5.0V operation (VDD) • Externally configurable gain on Class D • Very fast turn on time: 17μs • Independent Boost and Amplifier shutdown pins Description The LM48510 integrates a boost converter with a high efficiency mono, Class D audio power amplifier to provide 1.2W continuous power into an 8Ω speaker when operating on a 3.3V power supply with boost voltage (PV1) of 5.0V. When operating on a 3.3V power supply, the LM48510 is capable of driving a 4Ω speaker load at a continuous average output of 1.7W with less than 1% THD+N. The Class D amplifier is a low noise, filterless PWM architecture that eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The LM48510's switching regulator is a current-mode boost converter operating at a fixed frequency of 0.6MHz. The LM48510 is designed for use in mobile phones and other portable communication devices. The high (76%) efficiency extends battery life when compared to Boosted Class AB amplifiers. The LM48510 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND). The gain of the Class D is externally configurable which allows independent gain control from multiple sources by summing the signals. Output short circuit and Thermal shutdown protection prevent the device from damage during fault conditions. Superior click and pop suppression eliminates audible transients during power-up and shutdown. Key Specification ■  Quiescent Power Supply Current 6mA (typ) ■  Output Power  (RL = 8Ω, THD+N ≤ 1%,  VDD = 3.3V, PV1 = 5.0V) 1.2W (typ) ■  Shutdown Current 0.01μA (typ) Applications • Mobile Phones • PDAs • Portable media • Cameras • Handheld games

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Typical Application click for larger image	Connection Diagram click for larger image
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Datasheet

Title		Size	Date	Other Language
	LM48510 Boosted Class D Audio Power Amplifier	404 Kbytes	15-Oct-07

Featured Application Notes

Title		Size	Date	Other Language
	AN-1614: Application Note 1614 LM48510 Speaker Application Note	214 Kbytes	14-Aug-07	中文

More Application Notes

Title		Size	Date	Other Language
	AN-1922: Application Note 1922 LM48511 Evaluation Board User`s Guide	1586 Kbytes	5-Nov-08
	AN-1737: Application Note 1737 Managing EMI in Class D Audio Applications	183 Kbytes	2-Nov-07	日本語 中文

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM48510SD	CMOS7	0	18406	0	0	1089000	4	309006723
LM48510SDE	CMOS7	0	18406	0	0	1089000	4	309006723
LM48510SDX	CMOS7	0	18406	0	0	1089000	4	309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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