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参数资料
| 型号： | LM4651N/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 170 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP28 |
| 封装： | N28B |
| 文件页数： | 1/3页 |
| 文件大小： | 1980K |
| 代理商： | LM4651N/NOPB |
LM4651 & LM4652
Overture Audio Power
Amplifier
OBSOLETE
July 9, 2009
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 volt-
age, over modulation, and thermal shut down protection cir-
cuitry. The LM4651also contains a standby function which
shuts down the pulse width modulation minimizing supply
current. The LM4652 is a fully integrated H-bridge power
MOSFET IC in a TO-220 power package. The LM4652 has a
temperature sensor built in to alert the LM4651 when the die
temperature of the LM4652 exceeds the threshold. Together,
these two IC's form a simple, compact high power audio am-
plifier 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 increases
the efficiency compared to Class AB amplifiers. This high ef-
ficiency solution significantly reduces the heat sink size com-
pared 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
■ Output power into 4 with < 10% THD.
170W (Typ)
■ THD at 10W, 4, 10 500Hz.
< 0.3% THD (Typ)
■ Maximum efficiency at 125W
85% (Typ)
■ Standby attenuation.
>100dB (Min)
Features
■ Conventional pulse width modulation.
■ Externally controllable switching frequency.
■ 50kHz to 200kHz switching frequency range.
■ Integrated error amp and feedback amp.
■ Turnon soft start and under voltage lockout.
■ Over modulation protection (soft clipping).
■ Externally controllable output current limiting and thermal
shutdown protection.
■ Self checking protection diagnostic.
Applications
■ Powered subwoofers for home theater and PC's
■ Car booster amplifier
■ Self-powered speakers
Connection Diagrams
LM4651 Plastic Package
10127772
Top View
Order Number LM4651N
See NS Package Number N28B
LM4652 Plastic Package
(Note 8)
10127773
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
Overture is a registered trademark of National Semiconductor.
2009 National Semiconductor Corporation
101277
www.national.com
101277 Version 9 Revision 2
Print Date/Time: 2009/07/09 16:41:57
LM4651
&
LM4652
Overture
170W
Class
D
Audio
Power
Amplifier
Solution
相关PDF资料 |
PDF描述 |
|---|---|
| LM4652TF/NOPB | 170 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| LM4663MT/NOPB | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| LM4663MTX/NOPB | 2.1 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| LM4664ITL/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| LM4664ITLX/NOPB | 1.1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4652 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:170W Class D Audio Power Amplifier Solution |
| LM4652TA | 制造商:Texas Instruments 功能描述:IC QUAD PWRFET CLASS D 170W 4652 |
| LM4652TA | 制造商:Texas Instruments 功能描述:IC QUAD PWRFET CLASS D 170W 4652 |
| LM4652TA/NOPB | 功能描述:IC AMP AUDIO PWR 170W D TO220-15 RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Overture™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4652TF | 功能描述:IC AMP AUDIO PWR 170W D TO220-15 RoHS:否 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Overture™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
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