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MP7731DF-LF-Z

P1-P3P4-P6P7-P9
MP7731
5W - 30W Class D Mono
Bridged Audio Amplifier
MP7731 Rev. 2.0 www.MonolithicPower.com 1
10/3/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP7731 is a mono, 5W - 30W Class D Audio
Amplifier. It is one of MPS’ second generation of
fully integrated audio amplifiers which dramatically
reduces solution size by integrating the following:
Start Up / Shut Down Pop Elimination
Short Circuit Protection Circuits
180m Power MOSFETs
Mute / Standby Mode
The MP7731 utilizes a full bridge output structure
capable of delivering 5W - 30W into 4Ω
speakers. As in all other MPS Class D Audio
Amplifiers, this device exhibits the high fidelity
of a Class AB amplifier with an efficiency of
90%. The circuit is based on the MPS’ proprietary
variable frequency topology Analog Adaptive
Modulation (AAM™, Patent No. 6,420,930; other
patents pending) that delivers excellent PSRR,
fast response time and operates on a single
power supply.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV0045 4.8cm x 3.0cm x 1.5cm
FEATURES
30W into 4 with V
DD
= 16.5V
90% Efficiency at 5W
Amplifies Full Audio Range with Low THD+N
Typical = 0.1%
9.5V to 18V Supply Voltage Operation
Full Bridge Output Drive
4 Integrated 180m Switches
Turn On / Turn Off Click and Pop Suppression
Integrated Short Circuit Protection
Integrated Thermal shutdown
Mute / Standby Mode
APPLICATIONS
• Flat Panel LCD and PDP Displays
• Notebook and Multimedia Computers
• Televisions
• Home Stereos
• DVD and VCD Players
• Game Devices and Systems
• Monitors
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP7731
NC
PIN1
NIN1
AGND1
NC
EN1
NIN2
PIN2
AGND2
EN2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PGND1
SW1
VDD1
BS1
NC
PGND2
SW2
VDD2
BS2
NC
AUDIO IN+
+
V
CC
V
CC
-
+
V
CC
V
CC
V
CC
EN
AUDIO IN-
50
20
10
5
2
1
0.5
0.2
0.1
0.05
0.02
0.01
THD+N (%)
100M
10 50
1
OUTPUT POWER (W)
THD+N vs Output Power
f=1kHz
MP7731 – 5W – 30W CLASS D MONO BRIDGED AUDIO AMPLIFIER
MP7731 Rev. 2.0 www.MonolithicPower.com 2
10/3/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
PACKAGE REFERENCE
NC
PIN1
NIN1
AGND1
NC
EN1
NIN2
PIN2
AGND2
EN2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PGND1
SW1
VDD1
BS1
NC
PGND2
SW2
VDD2
BS2
NC
MP7731
EXPOSED PAD
Part Number* Package Temperature
MP7731DF TSSOP20
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP7731DF–Z)
For RoHS compliant packaging, add suffix –LF (eg.
MP7731DF–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage V
DD
............................................. 26V
BS Voltage ............................ V
SW
-0.3V to V
SW
+6.5V
Enable Voltage V
EN
................................. -0.3V to 6V
V
SW
, V
PIN
, V
NIN
..................................... -1V to V
DD
+1V
AGND to PGND................................... -0.3V to 0.3V
Junction Temperature......................................150˚C
Lead Temperature ...........................................260˚C
Storage Temperature ....................... -65˚C to 150˚C
Recommended Operating Conditions
(2)
Supply Voltage V
DD
................................ 9.5V to 18V
Operating Temperature T
A
................. -40˚C to 85˚C
Thermal Resistance
(3)
θ
JA
θ
JC
TSSOP20 ............................... 40....... 6.... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
(4, 5)
V
DD
= 16.5V, V
EN
= 5V, R
L
= 4Ω, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Standby Current V
EN
= 0V 2 10
µA
Quiescent Current 3 6 mA
SW On Resistance Sourcing and Sinking 0.18
Ω
Short Circuit Current Sourcing and Sinking 5.0 A
PIN, NIN Input Common Mode
Voltage Range
0 V
DD
/2 V
DD
-1.5 V
PIN, NIN Input Current V
PIN
=V
NIN
=8V 1 5 µA
V
EN
Rising 1.4 2.0 V
EN Enable Threshold Voltage
V
EN
Falling 0.4 1.2 V
EN Enable Input Current V
EN
= 5V 1 µA
Thermal Shutdown Trip Point T
J
Rising 150
°C
Thermal Shutdown Hysteresis 30
°C
MP7731 – 5W – 30W CLASS D MONO BRIDGED AUDIO AMPLIFIER
MP7731 Rev. 2.0 www.MonolithicPower.com 3
10/3/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
OPERATING SPECIFICATIONS
(6)
Circuit of Figure 1, V
DD
= 16.5V, V
EN
= 5V, R
L
= 4Ω, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Standby Current V
EN
= 0V 700
µA
Quiescent Current 28 mA
f=1KHz, THD+N=10% 30 W
Power Output
f=1KHz, THD+N=10%,
R
L
=8Ω
17 W
P
OUT
=1W, f=1KHz 0.2 %
THD+ Noise
P
OUT
=1W, f=1KHz, R
L
=8Ω
0.1 %
f=1KHz, P
OUT
=10W 85 %
Efficiency
f=1KHz, P
OUT
=10W, R
L
=8Ω
88 %
Maximum Power Bandwidth 20 KHz
Dynamic Range 90 dB
Noise Floor A-Weighted 370 µV
Power Supply Rejection f=1KHz 60 dB
Note:
4) The device is not guaranteed to function outside its operating rating.
5) Electrical Characteristics are for the IC only with no external components except bypass capacitors.
6) Operating Specifications are for the IC in Typical Application circuit (Figure 1).
P1-P3P4-P6P7-P9

MP7731DF-LF-Z

Mfr. #:
Buy MP7731DF-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Audio Amplifiers 5W-30W, Class-D Mono Bridged Audio Amp
Lifecycle:
New from this manufacturer.
Delivery:
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