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參數資料
| 型號： | LM4651 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LM4651 & LM4652 Overture⑩ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution |
| 中文描述： | LM4651 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 586K |
| 代理商： | LM4651 |
LM4651 & LM4652 Overture
Audio Power Amplifier
170W Class D Audio Power Amplifier Solution
General Description
The IC combination of the LM4651 driver and the LM4652
power MOSFET provides a high efficiency, Class D sub-
woofer amplifier solution.
The LM4651 is a fully integrated conventional pulse width
modulator driver IC. The IC contains short circuit, under
voltage, over modulation, and thermal shut down protection
circuitry. It contains a standby function, which shuts down
the pulse width modulation and minimizes supply current.
The LM4652 is a fully integrated H-bridge power MOSFET
IC in a TO-220 power package. Together, these two IC’s
form a simple, compact high power audio amplifier solution
complete with protection normally seen only in Class AB
amplifiers. Few external components and minimal traces
between the IC’s keep the PCB area small and aids in EMI
control.
The near rail-to-rail switching amplifier substantially in-
creases the efficiency compared to Class AB amplifiers. This
high efficiency solution significantly reduces the heat sink
size compared to a Class AB IC of the same power level.
This two-chip solution is optimum for powered subwoofers
and self powered speakers.
Key Specifications
n
Output power into 4
with
<
10% THD.
n
THD at 10W, 4
, 10 500Hz.
n
Maximum efficiency at 125W
n
Standby attenuation.
170W (Typ)
<
0.3% THD (Typ)
85% (Typ)
>
100dB (Min)
Features
n
Conventional pulse width modulation.
n
Externally controllable switching frequency.
n
50kHZ to 200kHz switching frequency range.
n
Integrated error amp and feedback amp.
n
Turnon soft start and under voltage lockout.
n
Over modulation protection (soft clipping).
n
Short circuit current limiting and thermal shutdown
protection.
n
15 Lead TO220 isolated package.
n
Self checking protection diagnostic.
Applications
n
Powered subwoofers for home theater and PC’s
n
Car booster amplifier
n
Self-powered speakers
Connection Diagrams
Overture
is a registered trademark of National Semiconductor Corporation.
LM4651 Plastic Package
DS101277-72
Top View
Order Number LM4651N
See NS Package Number N28B
LM4652 Plastic Package
(Note 8)
DS101277-73
Isolated TO-220 Package
Order Number LM4652TF
See NS Package Number TF15B
or
Non-Isolated TO-220 Package
Order Number LM4652TA
See NS Package Number TA15A
August 2000
L
2001 National Semiconductor Corporation
DS101277
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM4652TA | LM4651 & LM4652 Overture⑩ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution |
| LM4652TF | LM4651 & LM4652 Overture⑩ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution |
| LM4651N | LM4651 & LM4652 Overture⑩ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution |
| LM4652 | LM4651 & LM4652 Overture⑩ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution |
| LM4663 | 2 Watt Stereo Class D Audio Power Amplifier with Stereo Headphone Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4651_09 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:170W Class D Audio Power Amplifier Solution |
| LM4651N | 制造商:Texas Instruments 功能描述:IC AUDIO BOOMER CLASS D 170W 4651 |
| LM4651N | 制造商:Texas Instruments 功能描述:IC AUDIO BOOMER CLASS D 170W 4651 |
| LM4651N/NOPB | 功能描述:IC AMP AUDIO PWR 170W MONO 28DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Overture™ 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機，2-通道（立體聲） 在某負載時最大輸出功率 x 通道數量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點:I²C，麥克風，靜音，短路保護，音量控制 安裝類型:表面貼裝 供應商設備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4652 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:170W Class D Audio Power Amplifier Solution |
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