UTCLM1875 datasheet(4/6 Pages) UTC

Part #	UTCLM1875

Description	20W AUDIO POWER AMPLIFIER

Download	6 Pages

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Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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UTC LM1875

LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO. LTD

4

QW-R107-019,B

TYPICAL PERFORMANCE CHARACTERISTICS

40

Device Dissipation vs Ambient Temperature

80

20

60

100

0

40

45

TA - AMBIENT TEMPERATURE(℃)

35

30

25

20

15

10

5

0

120 140 160

INFINITE HEAT SINK

1℃/W HEAT SINK

2℃/W

HEAT SINK

5℃/W

HEAT SINK

10℃/W HEAT SINK

INTERFACE=1℃/W

See Application Hints.

20

100

PSRR vs Frequency

500

50

200

1K

0

90

100

FREQUENCY(Hz)

80

70

60

50

40

30

20

10

2K 5K10K 20K

RS=0

RL=4

1 Vrms

POSITIVE SUPPLY

NEGATIVE SUPPLY

INPUT REFERRED

0.1

THD vs Power Output

1.0

0.01

0.1

POWER OUTPUT(W)

1.0

10

100

20

100

THD vs Supply Voltage

500

50

200

1K

0

0.09

0.1

FREQUENCY(Hz)

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

2K

5K 10K 20K

Vs=+25V

PD=10W

RL=4Ω

RL=8Ω

010

20

Power Output vs Supply Voltage

15

5

20

25

0

25

30

35

RL=8Ω

THD=1%

10

5

30

SUPPLY VOLTAGE(+V)

010

60

Supply Current vs Supply Voltage

15

5

20

25

0

80

100

40

20

30

SUPPLY VOLTAGE(±V)

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