LM4857GR

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Manufacturer	National Semiconductor
Category	Audio Amplifiers
Mfr. Part #	LM4857GR
Description	CONSUMER CIRCUIT, PBGA49
Details Description	Amplifier IC 2-Channel (Stereo) with Mono and Stereo Headphones Class AB 49-CSBGA (4×4)
Package	49-TFBGA, CSPBGA
Listed Quantity*	38273

Datasheet: datasheet

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Catalog Technical Specifications

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Description

Mfr

National Semiconductor

Series

Boomer®

Package

Bulk

Product Status

Obsolete

Type

Class AB

Output Type

2-Channel (Stereo) with Mono and Stereo Headphones

Max Output Power x Channels @ Load

1.6W x 2 @ 4Ohm; 75mW x 2 @ 32Ohm

Voltage – Supply

2.7V ~ 5.5V

Features

3D, Depop, I²C, Mute, Shutdown, Thermal Protection, Volume Control

Mounting Type

Surface Mount

Operating Temperature

-40°C ~ 85°C (TA)

Supplier Device Package

49-CSBGA (4×4)

Package / Case

49-TFBGA, CSPBGA

Component Sourcing & Turnkey PCBA FAQ

Are the components new and original?

Yes. OrinewPCB supplies only 100% new, original, genuine electronic components. We do not supply used, refurbished or remarked material. This commitment also covers the components we supply for customers’ turnkey PCB assembly builds.

Can you source a part that is not in your own stock?

Yes. We work with component manufacturers and distribution partners to review sourcing options beyond our substantial inventory. Send the exact part number and quantity so pricing, availability and delivery can be confirmed for your request.

Does a listed quantity confirm immediate delivery?

Confirm the current available quantity, packaging, any date/lot requirements and delivery date in your quotation. Directory counts and listed quantities do not reserve material or confirm that every listed item is currently in our own warehouse.

Can I request a full BOM and finished PCB assemblies?

Yes. Send the BOM together with matching PCB design files and build quantity. State whether you need components only, partial turnkey or full turnkey PCB assembly, and identify programming and testing requirements.

Will you change a part number without our approval?

No. Proposed substitutes must be reviewed and approved by your team before they replace the released BOM. Tell us which lines cannot be substituted and which approved alternatives may be quoted.

LM4857GR

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Catalog Technical Specifications

Component Sourcing & Turnkey PCBA FAQ

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