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參數(shù)資料
| 型號： | LQA28A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 3V, 1W Boosted Boomer |
| 中文描述： | 3V的，1W的，細(xì)看布瑪 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 1063K |
| 代理商： | LQA28A |
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
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
(V
DD
= 3.0V, R
L
= 8
, THD+N = 2%)
j
Shutdown Current
14mA (typ)
1W (typ)
2μA (max)
Features
n
Pop & click circuitry eliminates noise during turn-on and
turn-off transitions
n
Low, 2μA (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
20126284
Top View
Order Number LM4805LQ
See NS Package Number LQA28A
20126256
Top View
U = Wafer Fab
Z = Assembly Plant Code
XY = Date Code
TT = Die Run Code
Boomer
is a registered trademark of National Semiconductor Corporation.
May 2005
L
2005 National Semiconductor Corporation
DS201262
www.national.com
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| LQA30B200C | 功能描述:二極管 - 通用，功率，開關(guān) 200V, Dual, 15A Ultra-Low Qrr IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復(fù)時間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube |
| LQA30N200C | 功能描述:整流器 200V, Dual, 15A Ultra-Low Qrr IC RoHS:否 制造商:Power Integrations 產(chǎn)品: 配置: 反向電壓: 正向電壓下降: 恢復(fù)時間: 正向連續(xù)電流: 最大浪涌電流: 反向電流 IR: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Reel |
| LQA30T200C | 功能描述:整流器 200V, Dual, 15A Ultra-Low Qrr IC RoHS:否 制造商:Power Integrations 產(chǎn)品:Fast Recovery Rectifiers 配置:Dual 反向電壓:200 V 正向電壓下降:1.2 V 恢復(fù)時間:16.5 ns 正向連續(xù)電流:15 A 最大浪涌電流:130 A 反向電流 IR:500 uA 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220AB 封裝:Tube |
| LQA30T300 | 功能描述:整流器 Q-Series 300V 30A Ultra Low Qrr RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
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