bd5445efv ROHM Co. Ltd., bd5445efv Datasheet - Page 8

• Manufacturer Part Number: bd5445efv
• Description: Analog Input / Single End Output Class-d Speaker Amplifier
• Manufacturer: ROHM Co. Ltd.

●Typical Characteristic Data (SE×2ch）Measured on ROHM’s evaluation board.
© 2010 ROHM Co., Ltd. All rights reserved.
BD5445EFV
www.rohm.com
0.01
-10
100
0.1
40
35
30
25
20
15
10
-5
Fig.26 Power supply voltage－Output power (R
50
45
40
35
30
25
20
15
10
10
5
0
5
0
1
0.001
10
8
Fig.24 Frequency－Voltage gain
Vcc=24V
RL=8Ω
BW=20～20kHz
Vcc=24V
RL=8Ω
Po=1W
L=47uH
C=0.39uF
Fig.22 Output power－THD+n
10
Dotted lines of the graphs indicate continuous output power by installing additional heat sinks.
0.01
12
100
14
OUTPUT POWER(W)
16
FREQUENCY(Hz)
0.1
1000
18
Vcc (V)
6kHz
Gain=38dB
Gain=32dB
Gain=26dB
Gain=20dB
1kHz
20
1
100Hz
22
10000
24
10
26
100000
28
100
L
=8Ω)
30
8/31
100
90
80
70
60
50
40
30
20
10
0.01
-100
-120
-140
100
0
0.1
-20
-40
-60
-80
10
1
0
0
10
10
Fig.27 Output power－Efficiency (R
Vcc=24V
RL=8Ω
Po=1W
BW=20～20kHz
Vcc=24V
RL=8Ω
No Signal
BW=20～20kHz
5
Fig.25 FFT of Output Noise Voltage
Fig.23 Frequency－THD+n
10
100
100
OUTPUT POWER(W/ch)
15
FREQUENCY(Hz)
FREQUENCY(Hz)
Vcc=24V
RL=8Ω
fin=1kHz
1000
1000
20
25
10000
10000
30
Technical Note
2010.05 - Rev.B
L
35
=8Ω)
100000
100000
40