MP7748DF-LF

MP7748DF-LF Datasheet

MP7748

Part	Datasheet
MP7748DF-LF	MP7748DF-LF (pdf)

Related Parts	Information
MP7748DF-LF-Z	MP7748DF-LF-Z

PDF Datasheet Preview
The Future of Analog IC Technology MP7748 2x20W Stereo Single Ended Class D Audio Amplifier The MP7748 is a Class D Audio Amplifier for driving stereo speakers in single-ended configuration or a mono speaker in bridge-tiedload configuration. It is fully integrated audio amplifier which dramatically reduces solution size by integrating the following • power MOSFETs • Startup / Shutdown pop elimination • Short circuit protection circuits The MP7748 is capable of delivering 20W per channel into speaker in single-ended output structure, or delivering 50W into speaker in bridge-tied-load output structure under 24V VDD. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at high 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. MP7748 features programmable VDD shutdown voltage for each channel by controlling the UVP node voltage. The default VDD shutdown rising threshold voltage is 8.4V if the UVP pin is NC. • Output Power at 24V VDD and 10% THD+N • Stereo SE configuration 20W per channel into load • Mono BTL configuration 50W into load • THD+N = at 1W, • Low Noise 103µV with SE configuration, 140µV with BTL configuration • Switching Frequency Up to 1MHz • 9.5V to 36V Operation from a Single Supply • Integrated Startup and Shutdown Pop Elimination Circuit • Programmable UVP • Thermal and Short Circuit Protection • Integrated Power FETs • Available in TSSOP28-Exposed Package • Portable Docking Stations • Surround Sound DVD Systems • Televisions • Flat Panel Monitors • Multimedia Computers • Home Stereo Systems For MPS green status, please visit MPS website under Quality Assurance. “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. THD+N vs. POUT VDD=24V, Freq=1kHz 20 10 60m 100m 10 35 POUT W 1/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. MP7748 2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER Part Number* MP7748DF ORDERING INFORMATION Package TSSOP28F Top Marking MP7748DF Free Air Temperature TA -40°C to +85°C * For Tape & Reel, add suffix e.g. For RoHS compliant packaging, add suffix e.g. PACKAGE REFERENCE TOP VIEW N/C 1 REF1 2 IN1 3 TIMER1 4 AGND1 5 EN1 6 UVP1 7 IN2 8 REF2 9 TIMER2 10 AGND2 11 EN2 12 UVP2 13 N/C 14 EXPOSED PAD ON BACKSIDE 28 PGND1 27 PGND1 26 SW1 25 SW1 24 BST1 23 VDD1 22 VDD1 21 PGND2 20 PGND2 19 SW2 18 SW2 17 BST2 16 VDD2 15 VDD2 ABSOLUTE MAXIMUM RATINGS 1 Supply Voltage VDD 40V BS Voltage ..................VSW 0.3V to VSW + 6.5V Enable Voltage VEN .........................-0.3V to +6V VUVP, VSW, VPIN, VNIN -1V to VDD + 1V AGND to PGND ...........................-0.3V to +0.3V Continuous Power Dissipation TA = +25°C 2 Junction Temperature ...............................150°C Lead Temperature Storage Temperature............... -65°C to +150°C Recommended Operating Conditions 3 Supply Voltage VDD 9.5V to 36V Maximum Junction Temp. TJ +125°C Thermal Resistance 4 TSSOP28F..............................32 6 °C Notes 1 Exceeding these ratings may damage the device. 2 The maximum allowable power dissipation is a function of the maximum junction temperature TJ MAX , the junction-toambient thermal resistance and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD MAX = TJ MAX -TA / Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3 The device is not guaranteed to function outside of its operating conditions. 4 Measured on JESD51-7, 4-layer PCB. 1/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. MP7748 2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER ELECTRICAL CHARACTERISTICS 5, 6 VDD = 24V, VEN = 5V, TA = +25°C, unless otherwise noted. Parameters Symbol Condition Supply Current Standby Current Quiescent Current Output Drivers VEN = 0V,NIN=PIN=Float IQ SW=Low SW On Resistance Sourcing and Sinking Short Circuit Current Sourcing and Sinking Inputs EN Enable Threshold Voltage VEN Rising

PDF Datasheet Preview

The Future of Analog IC Technology

MP7748
2x20W Stereo Single Ended Class D Audio Amplifier

The MP7748 is a Class D Audio Amplifier for driving stereo speakers in single-ended configuration or a mono speaker in bridge-tiedload configuration. It is fully integrated audio amplifier which dramatically reduces solution size by integrating the following
• power MOSFETs
• Startup / Shutdown pop elimination
• Short circuit protection circuits

The MP7748 is capable of delivering 20W per channel into speaker in single-ended output structure, or delivering 50W into speaker in bridge-tied-load output structure under 24V VDD. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at high 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.

MP7748 features programmable VDD shutdown voltage for each channel by controlling the UVP node voltage. The default VDD shutdown rising threshold voltage is 8.4V if the UVP pin is NC.
• Output Power at 24V VDD and 10% THD+N
• Stereo SE configuration 20W per channel into load
• Mono BTL configuration 50W into load
• THD+N = at 1W,
• Low Noise 103µV with SE configuration,
140µV with BTL configuration
• Switching Frequency Up to 1MHz
• 9.5V to 36V Operation from a Single

Supply
• Integrated Startup and Shutdown Pop

Elimination Circuit
• Programmable UVP
• Thermal and Short Circuit Protection
• Integrated Power FETs
• Available in TSSOP28-Exposed Package
• Portable Docking Stations
• Surround Sound DVD Systems
• Televisions
• Flat Panel Monitors
• Multimedia Computers
• Home Stereo Systems

For MPS green status, please visit MPS website under Quality Assurance. “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.

THD+N vs. POUT

VDD=24V, Freq=1kHz 20 10
60m 100m
10 35

POUT W
1/28/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2011 MPS. All Rights Reserved.

MP7748 2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER

Part Number* MP7748DF
ORDERING INFORMATION

Package TSSOP28F

Top Marking MP7748DF

Free Air Temperature TA -40°C to +85°C
* For Tape & Reel, add suffix e.g. For RoHS compliant packaging, add suffix e.g.

PACKAGE REFERENCE

TOP VIEW

N/C 1 REF1 2

IN1 3 TIMER1 4 AGND1 5

EN1 6 UVP1 7

IN2 8 REF2 9 TIMER2 10 AGND2 11

EN2 12 UVP2 13

N/C 14

EXPOSED PAD ON BACKSIDE
28 PGND1 27 PGND1 26 SW1 25 SW1 24 BST1 23 VDD1 22 VDD1 21 PGND2 20 PGND2 19 SW2 18 SW2 17 BST2 16 VDD2 15 VDD2

ABSOLUTE MAXIMUM RATINGS 1

Supply Voltage VDD 40V BS Voltage ..................VSW 0.3V to VSW + 6.5V Enable Voltage VEN .........................-0.3V to +6V VUVP, VSW, VPIN, VNIN -1V to VDD + 1V AGND to PGND ...........................-0.3V to +0.3V Continuous Power Dissipation TA = +25°C 2 Junction Temperature ...............................150°C Lead Temperature Storage Temperature............... -65°C to +150°C

Recommended Operating Conditions 3

Supply Voltage VDD 9.5V to 36V Maximum Junction Temp. TJ +125°C

Thermal Resistance 4

TSSOP28F..............................32 6 °C

Notes 1 Exceeding these ratings may damage the device. 2 The maximum allowable power dissipation is a function of
the maximum junction temperature TJ MAX , the junction-toambient thermal resistance and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD MAX = TJ MAX -TA / Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3 The device is not guaranteed to function outside of its operating conditions. 4 Measured on JESD51-7, 4-layer PCB.
1/28/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2011 MPS. All Rights Reserved.

MP7748 2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER

ELECTRICAL CHARACTERISTICS 5, 6

VDD = 24V, VEN = 5V, TA = +25°C, unless otherwise noted.

Parameters

Symbol Condition

Supply Current

Standby Current Quiescent Current Output Drivers

VEN = 0V,NIN=PIN=Float IQ SW=Low

SW On Resistance

Sourcing and Sinking

Short Circuit Current

Sourcing and Sinking

Inputs

EN Enable Threshold Voltage

VEN Rising

More datasheets: R220-084-000 | R220-082-000 | R220-060-000 | R220-080-000 | R230-130-000 | R230-112-000 | R230-092-000 | R230-090-000 | R230-172-000 | MP7748DF-LF-Z

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Datasheet ID: MP7748DF-LF 650042