MP1720 datasheet(8/14 Pages) MPS

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MP1720 – 2.7W LOW EMI HIGH EFFICIENCY MONO CLASS-D AUDIO AMPLIFIER

MP1720 Rev. 1.01

www.MonolithicPower.com

8/9/2012

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

TYPICAL PERFORMANCE CURVES (continued)

VIN = PVIN = SHDN=3.3V, DGND = PGND = 0V, CLK = DGND (fCLK=1.0MHz), signal frequency

fs=1kHz, Gain=12dB, TA = +25C, unless otherwise noted

(6,7,8).

700

900 1100 1300

Efficiency vs. POUT

VIN=3.3V

Efficiency vs. POUT

VIN=5V

-80

-70

-60

-50

-40

-30

-20

-10

20k

50 100 200 500 1k 2k

5k 10k

FREQUENCY (Hz)

100

0.4

0.8

1.2

POUT(W)

100

0.4 0.8 1.2 1.6

2.4 2.8

Efficiency vs. CLK Frequency

VIN=3.3V, THD+N=1%

Efficiency vs. CLK Frequency

VIN=5V, THD+N=1%

100

500

700

900

1100

1300

100

500

CLK FREQUENCY(kHz)

VIN(V)

SHDN

2V/div

ILOAD

100mA/div

0.5

1.5

2.5

3.5

4.5

5.5

VIN(V)

2.5

3.5

4.5

5.5

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

THD+N=1%

THD+N=10%

0.2

0.4

0.6

0.8

1.2

1.4

0.5

1.5

2.5

COMMON MODE VOLTAGE (V)

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