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MP7740DN-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
MP7740 Rev. 0.9 www.MonolithicPower.com 4
9/22/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1 PIN
Amplifier Positive Input. PIN is the positive side of the differential input to the amplifier. Use a
resistive voltage divider to set the voltage at PIN to V
DD
/2. See Figure 1.
2 NIN
Amplifier Negative Input. NIN is the negative side of the differential input to the amplifier. Drive
the input signal and close the feedback loop at NIN. See Figure 1.
3 AGND Analog Ground. Connect AGND to PGND at a single point.
4 EN Enable Input. Drive EN high to turn on the amplifier, low to turn it off.
5 BS
High-Side MOSFET Bootstrap Input. A capacitor from BS to SW supplies the gate drive
current to the internal high-side MOSFET.
6 VDD
Power Supply Input. VDD is the drain of the high-side MOSFET switch, and supplies the
power to the output stage and the MP7740 internal control circuitry. In addition to the main
bulk capacitor, bypass VDD to PGND with a 1µF X7R capacitor placed close to pins 6 and 8.
7 SW
Switched Power Output. SW is the output of the MP7740. Connect the LC filter between SW
and the output coupling capacitor. See Figure 1.
8 PGND Power Ground. Connect PGND to AGND at a single point.
Exposed
Pad
Connect exposed pad to GND plane for proper thermal performance.
MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
MP7740 Rev. 0.9 www.MonolithicPower.com 5
9/22/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CURVES
Circuit of Figure 1, V
DD
=24V, V
EN
=5V, A
V
=8.25V/V, T
A
= +25°C, unless otherwise noted.
AMPLITUDE (dBr)
AMPLITUDE (dBV)
FREQUENCY (Hz)
FREQUENCY (KHz)
2
-120
-100
-80
-60
-40
-20
0
4 6 8 101214161820
FREQUENCY (Hz)
AMPLITUDE (dB)
AMPLITUDE (dBV)
-120
-100
-80
-60
-40
-20
0
FREQUENCY (KHz)
2 4 6 8 10 12 14 16 18 20
-10
+4
-8
-6
-4
-2
+0
+2
40k20 100 1k 10k
40k20 100 1k 10k
-10
-8
-6
-4
-2
0
+2
+4
THD+N (%)
THD+N (%)
THD+N (%)
FREQUENCY (Hz)
FREQUENCY (Hz)
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
60m 200m 1 5 20
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
60m 200m 1 5 20
Freq=1kHz
Freq=100Hz
Freq=10kHz
Freq=10kHz
Freq=1kHz
20 100 500 2k 10k
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20 100 500 2k 10k
0.01
20
0.02
0.05
0.1
0.2
0.5
1
2
5
10
THD+N (%)
P
OUT
(W)P
OUT
(W)
Freq=100Hz
-80
+0
-70
-60
-50
-40
-30
-20
-10
20 100 500 2k 10k
FREQUENCY (Hz)
AMPLITUDE (dB)
MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
MP7740 Rev. 0.9 www.MonolithicPower.com 6
9/22/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2009 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CURVES (continued)
Circuit of Figure 1, V
DD
=24V, V
EN
=5V, T
A
= +25°C, unless otherwise noted.
100 5005020 1k 2k 5k 10k 20k
P
OUT
(W)
P
OUT
(W)
V
DD
(V)
AMPLITUDE (dBV)
-120
-100
-80
-60
-40
-20
0
AMPLITUDE (dBV)
EFFICIENCY (%)
-120
0
10
20
30
40
50
60
70
80
90
100
-100
-80
-60
-40
-20
0
AMPLITUDE (dB)
-120
-100
-80
-60
-40
-20
0
Efficiency vs. P
OUT
V
DD
=24V,Input Signal Freq=1kHz
FREQUENCY (Hz)
FREQUENCY (Hz)
20 4 6 8 10 12 14 16 18
P
OUT
vs. V
DD
Input Signal Freq=1kHz
0
5
10
15
20
25
30
35
0 5 10 15 20 25 30 35 40
100 5005020 1k 2k 5k 10k 20k
AMPLITUDE (dB)
-120
-100
-80
-60
-40
-20
0
FREQUENCY (Hz)
60 20k100 200 500 1k 2k 5k 10k
60
30k
100 200 500 1k 2k 5k 10k
20k
10
30
50
70
90
110
130
150
0 5 10 15
OUTPUT POWER (W)
FREQUENCY (Hz)
Thermal Rise vs. Output Power
V
DD
=24V
Right to Left
Right to Left
Left to Right
Left to Right
P1-P3P4-P6P7-P9P10-P12

MP7740DN-LF-Z

Mfr. #:
Buy MP7740DN-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Audio Amplifiers 15W Class-D Mono Single End Audio Amp
Lifecycle:
New from this manufacturer.
Delivery:
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