|
|
PDF LM4668MH Data sheet ( Hoja de datos )
| Número de pieza | LM4668MH | |
| Descripción | 10W High-Efficiency Mono BTL Audio Power Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LM4668MH (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
October 2004
LM4668
10W High-Efficiency Mono BTL Audio Power Amplifier
General Description
The LM4668 is a high efficiency switching audio power
amplifier primarily designed for demanding applications in
flat panel monitors and TV’s. It is capable of delivering 6W to
an 8Ω mono BTL load with less than 1% distortion (THD+N)
from a 12VDC power supply.
Boomer audio power amplifiers were designed specifically to
provide high quality output power with a minimal amount of
external components. The LM4668 features a micro-power,
active-low shutdown mode, an internal thermal shutdown
protection mechanism, and short circuit protection.
The LM4668 contains advanced transient (“pop and click”)
suppression circuitry that eliminates noises that would oth-
erwise occur during turn-on and turn-off transitions.
Key Specifications
j Power Output BTL (VDD = 14V,
fIN = 1kHz, THD+N = 10%, RL = 8Ω)
j Quiescent Power Supply Current
j Efficiency (VDD = 12V, fIN = 1kHz,
RL = 8Ω, POUT = 6W)
j Shutdown Current
j Fixed Gain
10W (typ)
30mA (typ)
79% (typ)
0.15mA (typ)
30dB (typ)
Features
n Soft-start circuitry eliminates noise during turn-on
transition
n Low current shutdown mode
n Low quiescent current
n 6W BTL output, RL = 8Ω
n Short circuit protection
n Fixed, internally set gain of 30dB
Applications
n Flat Panel Monitors
n Flat Panel TVs
n Computer Sound Cards
Connection Diagrams
LD Package
MH Package
20089102
Top View
Order Number LM4668LD
See NS Package Number LDC14A
Boomer® is a registered trademark of National Semiconductor Corporation.
© 2004 National Semiconductor Corporation DS200891
200891G3
Top View
Order Number LM4668MH
See NS Package Number MXA20A
www.national.com
1 page  
Typical Performance Characteristics (Continued)
Amplifier Output Power
vs Power Supply Voltage
RL = 8Ω, f = 1kHz
Amplifier Output Magnitude
vs Frequency
RL = 8Ω, VDD = 12V
20089112
Power Rejection Ratio vs Frequency
VDD = 9V, RL = 8Ω, Input Referred
20089113
Power Rejection Ratio vs Frequency
VDD = 12V, RL = 8Ω, Input Referred
20089114
Power Rejection Ratio vs Frequency
VDD = 14V, RL = 8Ω, Input Referred
20089115
Amplifier Power Dissipation
vs Amplifier Load Dissipation
VDD = 14V, RL = 8Ω, f = 1kHz
20089116
5
20089117
www.national.com
5 Page 
Demonstration Board Layout (Continued)
20089105
FIGURE 4. Recommended MH PCB Layout
Bottom Layer
20089125
FIGURE 5. Recommended LD PCB Layout
Top Silkscreen Layer
11 www.national.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LM4668MH.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LM4668MH | 10W High-Efficiency Mono BTL Audio Power Amplifier | National Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |