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LM4865 Datasheet Preview

LM4865 Datasheet

750mW Audio Power Amplifier

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LM4865
www.ti.com
SNAS035G – DECEMBER 1999 – REVISED MAY 2013
LM4865
750 mW Audio Power Amplifier with DC Volume
Control and Headphone Switch
Check for Samples: LM4865
FEATURES
1
2 DC Voltage Volume Control
• Headphone Amplifier Mode
• “Click and Pop” Suppression
• Shutdown Control When Volume Control Pin Is
Low
• Thermal Shutdown Protection
APPLICATIONS
• GSM Phones and Accessories, DECT, Office
Phones
• Hand Held Radio
• Other Portable Audio Devices
KEY SPECIFICATION
• PO at 1.0% THD+N Into 8SOIC, Micro SMD
750 mW (typ)
• PO at 10% THD+N Into 8SOIC, Micro SMD 1W
(typ)
• Shutdown Current 0.7µA(typ)
• Supply Voltage Range 2.7V to 5.5 V
DESCRIPTION
The LM4865 is a mono bridged audio power amplifier
with DC voltage volume control. The LM4865 is
capable of delivering 750mW of continuous average
power into an 8load with less than 1% THD when
powered by a 5V power supply. Switching between
bridged speaker mode and headphone (single ended)
mode is accomplished using the headphone sense
pin. To conserve power in portable applications, the
LM4865's micropower shutdown mode (IQ = 0.7µA,
typ) is activated when less than 300mV is applied to
the DC Vol/SD pin.
Boomer audio power amplifiers are designed
specifically to provide high power audio output while
maintaining high fidelity. They require few external
components and operate on low supply voltages.
CONNECTION DIAGRAMS
Figure 1. Micro SMD Package (Top View)
Figure 2. Small Outline Package (SOIC) (Top View)
Mini Small Outline Package (VSSOP)
See Package Number D, DGK
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated




etcTI

LM4865 Datasheet Preview

LM4865 Datasheet

750mW Audio Power Amplifier

No Preview Available !

LM4865
SNAS035G – DECEMBER 1999 – REVISED MAY 2013
TYPICAL APPLICATION
www.ti.com
Figure 3. Typical Audio Amplifier
Application Circuit
(Numbers in ( ) are specific to the micro SMD package)
2
Submit Documentation Feedback
Product Folder Links: LM4865
Copyright © 1999–2013, Texas Instruments Incorporated



Part Number LM4865
Description 750mW Audio Power Amplifier
Maker etcTI
Total Page 3 Pages
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LM4865 Datasheet PDF





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