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PDF MP7740 Data sheet ( Hoja de datos )
| Número de pieza | MP7740 | |
| Descripción | 15W Class D Mono Single Ended Audio Amplifer | |
| Fabricantes | MPS | |
| Logotipo |  |
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The Future of Analog IC Technology
MP7740
15W Class D Mono
Single Ended Audio Amplifer
DESCRIPTION
The MP7740 is a mon o 15W Cla ss D Audio
Amplifier. It is one of MPS’ produ cts of fu lly
integrated audio amplifiers which dramatically
reduces solution size by integrating the
following:
250mΩ power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection circuits
The MP774 0 utilizes a single ended output
structure ca pable of d elivering 15W into 4 Ω
speakers. MPS Class D Audio Amplifiers exhibit
the high fid elity of a Cl ass A/B amplifier at hig h
efficiencies. The circuit is based on the MPS’
proprietary variable frequency topology that
delivers excellent linearity, fast response time
and operates on a single power supply.
FEATURES
• 15W Output at VDD = 24V into a 4Ω load
• THD+N = 0.05% at 1W, 8Ω
• 90% Efficiency at 15W & VDD=24V
• Low Noise (103µV Typical)
• Switching Frequency Up to 1MHz
• 9.5V to 36V Operation from a Single Supply
• Integrated Startup and Shutdown Pop
Elimination Circuit
• Thermal and Short Circuit Protection
• Integrated Power FETs
• Pin Compatible with MP7720
• Available in Tiny 8-Pin SCOPI ackage
APPLICATIONS
• Portable Docking Stations
• Surround Sound DVD Systems
• Televisions
• Flat Panel Monitors
• Multimedia Computers
• Home Stereo Systems
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
AAM (Analog Adaptive Modulation) is a Trademark of Monolithic Power
Systems, Inc.
TYPICAL APPLICATION
OFF ON 4 EN
VDD 6
1 PIN
PGND 8
MP7740
2 NIN
BS 5
3 AGND
SW 7
VDD
AUDIO
INPUT
+
THD+N vs. POUT
VDD=24V,Freq=1kHz,A-wtd
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
60m
200m 1
POUT(W)
5
20
MP7740 Rev. 0.9
9/22/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
1
http://www.Datasheet4U.com
1 page  
MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
TYPICAL PERFORMANCE CURVES
Circuit of Figure 1, VDD=24V, VEN=5V, AV=8.25V/V, TA = +25°C, unless otherwise noted.
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
60m
Freq=1kHz
Freq=10kHz
200m 1
POUT(W)
Freq=100Hz
5 20
20
10
5
2
1
0.5 Freq=1kHz
0.2 Freq=10kHz
0.1
0.05
0.02
Freq=100Hz
0.01
60m 200m 1
5
POUT(W)
20
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
20
100 500 2k 10k
FREQUENCY (Hz)
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
20
100 500 2k
10k
FREQUENCY (Hz)
+4
+2
+0
-2
-4
-6
-8
-10
20
100 1k
10k
FREQUENCY (Hz)
40k
+4
+2
0
-2
-4
-6
-8
-10
20
100 1k 10k
FREQUENCY (Hz)
40k
+0
-10
-20
-30
-40
-50
-60
-70
-80
20
100 500 2k 10k
FREQUENCY (Hz)
0
-20
-40
-60
-80
-100
-120
2 4 6 8 10 12 14 16 18 20
FREQUENCY (KHz)
0
-20
-40
-60
-80
-100
-120
2 4 6 8 101 21 41 61 8 20
FREQUENCY (KHz)
MP7740 Rev. 0.9
9/22/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
5
5 Page 
MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
TYPICAL APPLICATION CIRCUIT
RRH OFF ON
RRL
CINT
5.6nF
CR
4 EN
VDD 6
1 PIN
PGND 8
MP7740
2 NIN
BS 5
3 AGND
SW 7
AUDIO
INPUT
CIN RIN
RFB
CFB
22pF
CBYP
CBS
CF
CVDDBYP
VDD
DSL
(Optional) (8)
LF
COUT
OUTPUT
Figure 1— Mono Typical Application Circuit
AGND
Feedback
signal
CVDDBYP
CFB
PGND
AGND
RFB
RRL
RRH
CF
CR 1 PIN
CINT
2 NIN
3 AGND
4 EN
PGND
SW
VDD
BS
8
7
6
5
CBYP
CBS
LF
MP7740
Top Bottom
Figure 2—Reference PCB Layout
PGND
(Optional)(8)
DSL
Notes:
8) Schottky diode DSL only be required for short circuit protection. Detailed see SHORT CIRCUIT/OVERLOAD PROTECTION section in
Operation Information.
MP7740 Rev. 0.9
9/22/2009
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MP7740.PDF ] | |
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