MP7748 datasheet(2/19 Pages) MPS

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MP7748 – 2X20W STEREO SINGLE ENDED CLASS D AUDIO AMPLIFIER

MP7748 Rev. 1.0

www.MonolithicPower.com

1/28/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

ORDERING INFORMATION

Part Number*

Package

Top Marking

Free Air Temperature (TA)

MP7748DF

TSSOP28F

MP7748DF

-40

°C to +85°C

* For Tape & Reel, add suffix –Z (e.g. MP7748DF–Z).

For RoHS compliant packaging, add suffix –LF (e.g. MP7748DF–LF–Z)

PACKAGE REFERENCE

N/C

IN2

PGND2

TIMER1

PGND2

AGND1

SW2

EXPOSED PAD

ON BACKSIDE

VDD1

IN1

REF1

EN1

REF2

UVP1

TIMER2

TOP VIEW

BST2

VDD2

SW2

UVP2

N/C

EN2

AGND2

PGND1

SW1

PGND1

SW1

BST1

VDD1

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)

………………………………………………....3.9W

Junction Temperature...............................150

°C

Lead Temperature ....................................260

°C

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)

θJA

θJC

TSSOP28F..............................32 ....... 6 ........

°C

Notes:

Exceeding these ratings may damage the device.

The maximum allowable power dissipation is a function of

the maximum junction temperature TJ (MAX), the junction-to-

ambient thermal resistance θJA, and the ambient temperature

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD (MAX) =

(TJ(MAX)-TA)/ θJA. 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.

The device is not guaranteed to function outside of its

operating conditions.

Measured on JESD51-7, 4-layer PCB.

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