LM4805LQ Datasheet

  • LM4805LQ

  • National Semiconductor [3V, 1W Boosted Boomer]

  • 1058.60KB

  • NSC

扫码查看芯片数据手册

上传产品规格书

PDF预览

LM4805 3V, 1W Boosted Boomer
May 2005
LM4805
3V, 1W Boosted Boomer
General Description
The LM4805 is a boosted audio power amplifier designed for
driving 8ohm speakers in portable applications. It delivers at
least 1W continuous power to an 8鈩?load from any input
voltage between 3V and 4.6V with less than 2% THD+N.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4805 does not require boot-
strap capacitors, or snubber circuits. Therefore it is ideally
suited for portable applications requiring high power and
minimal size.
The LM4805 features a low-power consumption shutdown
mode along with an internal thermal shutdown protection
mechanism and short circuit protection.
The LM4805 contains advanced pop & click circuitry that
eliminates noises which would otherwise occur during
turn-on and turn-off transitions. The LM4805 is unity-gain
stable and can be configured by external gain-setting resis-
tors.
Key Specifications
j
Quiescent Power Supply Current
(V
DD
= 3V)
j
Output Power
14mA (typ)
1W (typ)
2碌A (max)
(V
DD
= 3.0V, R
L
= 8鈩? THD+N = 2%)
j
Shutdown Current
Features
n
Pop & click circuitry eliminates noise during turn-on and
turn-off transitions
n
Low, 2碌A (max) shutdown current
n
Low, 14mA (typ) quiescent current
n
Unity-gain stable
n
External gain configuration capability
Applications
n
Cellphone
n
PTT (Push To Talk) mobile phones
Connection Diagrams
LM4805LQ (5x5)
LQ Marking
20126256
Top View
U = Wafer Fab
Z = Assembly Plant Code
XY = Date Code
TT = Die Run Code
20126284
Top View
Order Number LM4805LQ
See NS Package Number LQA28A
Boomer
is a registered trademark of National Semiconductor Corporation.
漏 2005 National Semiconductor Corporation
DS201262
www.national.com

LM4805LQ 产品属性

  • National Semiconductor (TI)

  • Class-AB

  • 1.2 W x 1 at 8 Ohms

  • 1-Channel Mono

  • 0.2 %

  • + 85 C

  • LLP EP

  • Reel

  • 8 Ohms

  • 3 V, 5 V

  • Single

  • - 40 C

  • Differential

  • Dual

LM4805LQ相关型号PDF文件下载

您可能感兴趣的PDF文件资料

热门IC型号推荐

扫码下载APP,
一键连接广大的电子世界。

在线人工客服

买家服务:
卖家服务:
技术客服:

0571-85317607

网站技术支持

13606545031

客服在线时间周一至周五
9:00-17:30

关注官方微信号,
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人:

联系方式:

按住滑块,拖拽到最右边
>>
感谢您向阿库提出的宝贵意见,您的参与是维库提升服务的动力!意见一经采纳,将有感恩红包奉上哦!