Features Stereo speaker amplifier Stereo headphone amplifier Independent Left, Right, and Mono volume controls National 3D enhancement I2C compatible interface Ultra low shutdown current Click and Pop Suppression circuit 10 distinct output modes Thermal Shutdown Protection Available in micro SMD and LLP packages Description The LM4859 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 495mW per channel into an 8 load and a stereo headphone amplifier delivering 33mW per channel into a 32 load. It integrates the audio amplifiers, volume control, mixer, power management control, and National 3D enhancement all into a single package. In addition, the LM4859 routes and mixes the stereo and mono inputs into 10 distinct output modes. The LM4859 is controlled through an I2C compatible interface. Other features include an ultra-low current shutdown mode and thermal shutdown protection. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. The LM4859 is available in a 30-bump TL package and a 28-lead LLP package. Key Specification POUT, Stereo Loudspeakers, 4, 5V, 1% THD+N (LM4859SP) 1.6W (typ) POUT, Stereo Loudspeakers, 8, 5V, 1% THD+N 1.2W (typ) POUT, Stereo Headphones, 32, 5V, 1% THD+N 75mW (typ) POUT, Stereo Loudspeakers, 8, 3.3V, 1% THD+N 495mW (typ) POUT, Stereo Headphones, 32, 3.3V, 1% THD+N 33mW (typ) Shutdown Current 0.06µA (typ) Applications Cell Phones PDAs Portable Gaming Devices Internet Appliances Portable DVD/CD/AAC/MP3 players

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

Datasheets

Title		Size	Date	Other Language
	LM4859 Stereo 1.2W Audio Sub-system with 3D Enhancement	1205 Kbytes	7-Jun-06

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM4859SP/NOPB LM4859SP RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 1731 MOUSER Worldwide 1000	$1.28 each at 1K+ pcs	reel of 1000
LM4859SPX/NOPB LM4859SPX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.28 each at 1K+ pcs	reel of 4500
LM4859TL/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 250	$1.28 each at 1K+ pcs	reel of 250

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM4859SPBD	LM4857ITLBD	NATIONAL SEMICONDUCTOR	16 Nov 2008

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 LM4859.

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 LM4859 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM4859SP/NOPB LM4859SP	51.318 51.605	LLP	28	1 1	260 260	Detail	Download	N/A	NS UZXYTT L4859SP
LM4859SPX/NOPB LM4859SPX	51.319 51.605	LLP	28	1 1	260 260	Detail	Download	N/A	NS UZXYTT L4859SP
LM4859TL/NOPB	9.584	MICRO SMD	30	1	260	Detail	Download	N/A	XYTT I GF1

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 LM4859.

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 LM4859 is located at RoHS Status.

CAD Symbols and Models Download LM4859 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM4859SP	CS065	2	47473	43	0	5527000	1	1568301341
LM4859SPX	CS065	2	47473	43	0	5527000	1	1568301341
LM4859TL	CS065	2	47473	43	0	5527000	1	1568301341

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 LM4859.

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 LM4859 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM4859SPBD	LM4857ITLBD	NATIONAL SEMICONDUCTOR	16 Nov 2008