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

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

Parameters Values Power@ 8Ohms, 1% THD 1.2 Watt Power@ 8Ohms, 10% THD 1.55 Watt THD 0.07 % THD Conditions Pout=500mW,Vdd=3.3v User Supply 3.3 Volt Shut down Yes Shutdown Type Low Supply Range +2.7 - +5.5 V Temperature Min -40 deg C Temperature Max 85 deg C PowerWise Yes

Datasheets

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

Application Notes

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

Other Technical Documents

Title		Type	Date
	Class D Amplifier FAQs	External Article	2008-11-05

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM48510SD/NOPB LM48510SD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 RS COMPONENTS Worldwide 975	$1.35 each at 1K+ pcs	reel of 1000
LM48510SDE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.35 each at 1K+ pcs	reel of 250
LM48510SDX/NOPB LM48510SDX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.35 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM48510.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM48510 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM48510SDBD	Boosted Class D Audio Power Amplifier	Full production	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 1	$100.00 each	1
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. 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 Applications: Mobile Phones PDAs Portable media Cameras Handheld games

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM48510SD/NOPB LM48510SD	50.987 51.188	LLP	16	1 1	260 260	Detail	N/A	N/A	NS UZXYTT L48510
LM48510SDE/NOPB	50.987	LLP	16	1	260	Detail	N/A	N/A	NS UZXYTT L48510
LM48510SDX/NOPB LM48510SDX	50.987 50.987	LLP	16	1 1	260 260	Detail	N/A	N/A	NS UZXYTT L48510

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM48510.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM48510 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM48510SD	CMOS7	0	21301	0	0	1584000	3	449464325
LM48510SDE	CMOS7	0	21301	0	0	1584000	3	449464325
LM48510SDX	CMOS7	0	21301	0	0	1584000	3	449464325

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.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM48510.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM48510 is located at RoHS Status.