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LM4865M Datasheet

  • LM4865M

  • National Semiconductor [750 mW Audio Power Amplifier with D...

  • 343.37KB

  • NSC

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LM4865 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch
December 1999
LM4865
750 mW Audio Power Amplifier with DC Volume Control
and Headphone Switch
General Description
The LM4865 is a mono bridged audio power amplifier with
DC volume control, capable of delivering 750 mW of continu-
ous average power into an 8鈩?load with less than 1% THD
from a 5V power supply. Switching between bridged speaker
mode and headphone (single ended) mode is accomplished
via a headphone sense pin. In addition, LM4865 is set into
low current consumption shutdown mode (0.7 碌A typical) by
lowering the DC Vol/SD pin to below 0.3V.
Boomer audio power amplifiers are designed specifically to
provide high power audio output, with quality sound, from a
low supply voltage source while requiring the minimal
amount of external components.
n
Hand held radio
n
Other portable audio devices
Key Specifications
n
P
O
at 1.0% THD+N into 8鈩?(SOP): 750 mW (typ)
n
P
O
at 10% THD+N into 8鈩?(SOP): 1W (typ)
n
Shutdown Current: 0.7 碌A (typ)
Features
n
n
n
n
n
DC volume control
Headphone amplifier mode
鈥淐lick and pop鈥?suppression
Shutdown control when volume control pin is low
Thermal shutdown protection
Applications
n
GSM phones and accessories, DECT, office phones
Typical Application
Connection Diagram
MSOP, SOP Package
DS101025-2
Top View
Order Number LM4865M, LM4865MM
See NS Package Number M08A, MUA08A
DS101025-1
FIGURE 1. Typical Audio Amplifier
Application Circuit
BOOMER
鈩?/div>
is a trademark of National Semiconductor Corporation.
漏 1999 National Semiconductor Corporation
DS101025
www.national.com

LM4865M 产品属性

  • National Semiconductor (TI)

  • Class-AB

  • 1 W x 1 at 8 Ohms, 0.11 W x 1 at 8 Ohms

  • 1-Channel Mono

  • 0.6 %

  • 3 V, 5 V

  • + 85 C

  • SMD/SMT

  • SOIC-8 Narrow

  • Tube

  • 32 Ohms

  • Single

  • - 40 C

  • Differential, Single

  • Single

  • 5.5 V

  • 2.7 V

LM4865M相关型号PDF文件下载

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  • LM4818
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  • LM4819
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  • LM4819
    英文版
    350mW Audio Power Amplifier with Shutdown Mode
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