Features Integrated Charge Pump Bridge-tied Load Output High PSRR I 2C Volume and Mode Control Reset Input Advanced Click-and-Pop Suppression Low Supply Current Minimum external components Micro-power shutdown Available in space-saving 16-bump µSMD package Description The LM48823 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium. The LM48823 charge pump allows the device to deliver 5.4VRMS from a single 4.2V supply. The LM48823 features high power supply rejection ratio (PSRR), 93dB at 217Hz, allowing the device to operate in noisy environments without additional power supply conditioning. Flexible power supply requirements allow operation from 2.0V to 4.5V. The LM48823 features an active low reset input that reverts the device to its default state. Additionally, the LM48823 features a 32-step I 2C volume control. The low power Shutdown mode reduces supply current consumption to 0.01µA. The LM48823’s superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48823 is available in an ultra-small 16-bump micro SMD package (2mmx2mm). Key Specification ■  Output Voltage at VDD = 4.2V,  RL = 2.2µF + 15Ω THD+N ≤ 1% 5.4VRMS (typ) ■  Quiescent Power Supply Current  at 4.2V 3.3mA (typ) ■  PSRR at 217Hz 93dB (typ) ■  Shutdown current 0.01μA (typ) Applications Cell phones Smart phones Portable media devices Notebook PCs

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

Parameters Values Load Conditions Rl=2.2uF+15ohm Supply Min 1.8 Volt Supply Max 4.5 Volt THD Conditions Rl=2.2uF+15ohm, f=1kHz Shutdown Type Low

Datasheets

Title		Size	Date	Other Language
	LM48823 Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C Volume Control and Reset	500 Kbytes	8-Oct-10

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM48823TL/NOPB LM48823TL RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 461 MOUSER Worldwide 250	$1.35 each at 1K+ pcs	reel of 250
LM48823TLX/NOPB RoHS Status	MICRO SMD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.35 each at 1K+ pcs	reel of 3000

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 LM48823.

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 LM48823 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM48823TLBD	evaluation board	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	CALL	N/A

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM48823TLEVAL	LM48823TLEVAL Evaluation Board	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	CALL	N/A
Description: The LM48823 is a single supply, mono, ceramic speaker driver with an integrated charge-pump, designed for portable devices, such as cell phones, where board space is at a premium. The LM48823 charge pump allows the device to deliver 5.4VRMS from a single 4.2V supply. The LM48823 also features an integrated 32 step I2C Volume Control. This LM488823TLEVAL is an evaluation kit designed to ease the evaluation and effort during the development of a circuit using the LM48861. Features: Integrated Charge Pump Bridge-tied Load Output High PSRR I2C Volume and Mode Control Reset Input Advanced Click-and-Pop Suppression Low Supply Current Minimum external components Micro-power shutdown Available in space-saving 16-bump ?D package Applications: Smartphones Mobile Phones and Multimedia Terminals, PDAS Portable DVD/CD/AAC/MP3 Players Digital Cameras/Camcorders Contents: A fully assembled Audio Power Amplifier evaluation board. I2C card and cable.

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
LM48823TL/NOPB LM48823TL	4.813 4.813	MICRO SMD	16	1 1	260 260	Detail	Download	N/A	XYTT I GK6
LM48823TLX/NOPB	4.813	MICRO SMD	16	1	260	Detail	Download	N/A	XYTT I GK6

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 LM48823.

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 LM48823 is located at RoHS Status.

CAD Symbols and Models Download LM48823 CAD Symbols

Models N/A

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Audio Solutions for Portable Devices Date: 2009-03-02 Length: 00:50:38