0

250

500

750

1000

1250

1500

OUTPUT POWER (mW)

VDD = 5V

VDD = 3.6V

VDD = 2.5V

0

50

100

150

200

250

0

100

200

300

400

500

0

500

1000

1500

2000

OUTPUT POWER (mW)

VDD = 5V

VDD = 3.6V

VDD = 2.5V

0

500

1000

1500

2000

OUTPUT POWER (mW)

VDD = 5V

VDD = 3.6V

VDD = 2.5V

0

10

20

30

40

50

60

70

80

90

100

0

500

1000

1500

2000

OUTPUT POWER (mW)

VDD = 2.5V

0

10

20

30

40

50

60

70

80

90

100

VDD = 3.6V

VDD = 5V

10

100

1000

10000

100000

FREQUENCY (Hz)

0.001

0.01

0.1

1

10

100

10

100

1000

10000

100000

FREQUENCY (Hz)

0.001

0.01

0.1

1

10

100

LM4675, LM4675SDBD, LM4675TLBD

www.ti.com

SNAS353C – AUGUST 2006 – REVISED MAY 2013

Typical Performance Characteristics (continued)

The performance graphs were taken using the Audio Precision AUX-0025 Switching Amplifier measurement Filter in series

with the LC filter on the demo board.

THD + N vs Frequency

THD + N vs Frequency

VDD = 3.6V, POUT = 100mW, RL = 4Ω

VDD = 5V, POUT = 150mW, RL = 4Ω

Figure 11.

Figure 12.

Efficiency vs. Output Power

Efficiency vs. Output Power

RL = 4Ω, f = 1kHz

RL = 8Ω, f = 1kHz

Figure 13.

Figure 14.

Power Dissipation vs. Output Power

Power Dissipation vs. Output Power

RL = 4Ω, f = 1kHz

RL = 8Ω, f = 1kHz

Figure 15.

Figure 16.

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