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MP7720DS-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP7720
20W Class D Mono
Single Ended Audio Amplifer
MP7720 Rev. 2.1 www.MonolithicPower.com 1
1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP7720 is a mono 20W 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:
180m power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection circuits
Mute / Standby
The MP7720 utilizes a single ended output
structure capable of delivering 20W into 4
speakers. MPS Class D Audio Amplifiers exhibit
the high fidelity of a Class A/B amplifier at
efficiencies greater than 90%. The circuit is
based on the MPS’ proprietary variable
frequency topology that delivers excellent
PSRR, fast response time and operates on a
single power supply.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV0030 2.4”X x 3.5”Y x 1.2”Z
FEATURES
• 20W Output at V
DD
= 24V into a 4 load
• THD+N = 0.04% at 1W, 8
• 93% Efficiency at 20W
• Low Noise (190µV Typical)
• Switching Frequency Up to 1MHz
• 9.5V to 24V Operation from a Single Supply
• Integrated Startup and Shutdown Pop
Elimination Circuit
• Thermal Protection
• Integrated 180m Switches
• Mute/Standby Modes (Sleep)
• Available in Tiny 8-Pin SOIC and PDIP Packages
APPLICATIONS
• 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
+
AUDIO
INPUT
OFF ON
V
DD
MP7720
SW
BS
PGND
VDD
PIN
EN
NIN
AGND
8
6
5
7
1
4
2
3
20
10
1
0.1
0.01
THD+N (%)
0.1 1 10 30
POWER (W)
THD+N vs
Power (24V, 1KHz)
MP7720 – 20W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
MP7720 Rev. 2.1 www.MonolithicPower.com 2
1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
PACKAGE REFERENCE
PIN
NIN
AGND
EN
PGND
SW
VDD
BS
1
2
3
4
8
7
6
5
TOP VIEW
Part Number* Package Temperature
MP7720DS SOIC8
–40°C to +85°C
MP7720DP PDIP8
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP7720DS–Z)
For Lead Free, add suffix –LF (eg. MP7720DS–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 24V
Operating Temperature T
A
.........–40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
SOIC8.................................... 105 ..... 40... °C/W
PDIP8 ..................................... 95...... 55... °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
V
DD
= 24V, V
EN
= 5V, T
A
= +25°C, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Units
Supply Current
Standby Current V
EN
= 0V 1 5 µA
Quiescent Current 1.5 3.0 mA
Output Drivers
SW On Resistance Sourcing and Sinking 0.18
Short Circuit Current Sourcing and Sinking 5.0 A
Inputs
PIN, NIN Input Common Mode
Voltage Range
0
V
DD
2
V
DD
– 1.5 V
PIN, NIN Input Current V
PIN
= V
NIN
= 12V 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
Thermal Shutdown Trip Point T
J
Rising 150
°C
Thermal Shutdown Hysteresis 30
°C
MP7720 – 20W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
MP7720 Rev. 2.1 www.MonolithicPower.com 3
1/22/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
OPERATING SPECIFICATIONS
Circuit of Figure 1, V
DD
= 24V, V
EN
= 5V, T
A
= +25°C, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Units
Standby Current V
EN
= 0V 130 µA
Quiescent Current 13 mA
f = 1KHz, THD+N = 10%,
4 Load
20 W
Power Output
f = 1KHz, THD+N = 10%,
8 Load
10 W
P
OUT
= 1W, f = 1KHz, 4
Load
0.08 %
THD+ Noise
P
OUT
= 1W, f = 1KHz, 8
Load
0.04 %
f = 1KHz, P
OUT
= 1W, 4
Load
90 %
Efficiency
f = 1KHz, P
OUT
= 1W, 8
Load
95 %
Maximum Power Bandwidth 20 KHz
Dynamic Range 93 dB
Noise Floor A-Weighted 190 µV
Power Supply Rejection f = 1KHz 60 dB
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. Connect a 0.1µF capacitor from SW to BS. Place a
6.2V zener diode from BS to SW to prevent overstressing of the internal circuitry.
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 MP7720 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 MP7720. 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.
P1-P3P4-P6P7-P9P10-P12

MP7720DS-LF-Z

Mfr. #:
Buy MP7720DS-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Audio Amplifiers 20W, Class-D Mono Single-End Audio Amp
Lifecycle:
New from this manufacturer.
Delivery:
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