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BD5426MUV 데이터시트 PDF




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부품번호 BD5426MUV 기능
기능 Analog Input / BTL Output Class-D Speaker Amplifier
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BD5426MUV 데이터시트, 핀배열, 회로
www.DataSheet4U.com
Middle Power Class-D Speaker Amplifiers
Analog Input / BTL Output
Class-D Speaker Amplifier
BD5426MUV
No.10075EBT08
Description
BD5426MUV is a 10W + 10W stereo class-D power amplifier IC, developed for space-saving and low heat-generation
applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process
technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an
ultimate level. With this technology, the IC has achieved high efficiency of 87% (9W + 9W output with 8load), which is the
top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve
low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total
output of 20W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality
playback of the sound system.
Features
1) A high efficiency of 87% (9W + 9W output with 8load), which is the highest grade in the industry and low heat-generation.
2) An output of 10W + 10W (13V, with 8load) is allowed without an external heat radiator.
3) Driving a lowest rating load of 6is allowed.
4) Pop noise upon turning power on/off and power interruption has been reduced.
5) High-quality audio muting is implemented by soft-switching technology.
6) An output power limiter function limits excessive output to speakers.
7) High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and
GND shorting, against reduced-voltage, and against applying DC voltage to speaker.
8) A master/slave function allowing synchronization of multiple devices reduces beat noises.
9) Adjustment of internal PWM sampling clock frequencies (250 kHz to 400kHz) allows easy protective measures against
unwanted radio emission to AM radio band.
10) A compact back-surface heat radiation type power package is employed.
VQFN048V7070 7.0mm × 7.0mm × 1.0mm, pitch 0.5mm
Absolute maximum ratings
A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent
reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability.
The following values assume Ta =25. For latest values, refer to delivery specifications.
Parameter
Supply voltage
Power dissipation
Input voltage for signal pin
Symbol
VCC
Pd
VIN
Ratings
+20
3.28
4.8
-0.2 ~ +7.2
Unit Conditions
V
Pin 2, 14, 15, 22, 23, 38, 39, 46, 47
(Note 1, 2)
W (Note 3)
W (Note 4)
V Pin 6, 7 (Note 1)
Input voltage for control pin
VCONT
-0.2 ~ VCC+0.2
V Pin 28, 32 (Note 1)
Input voltage for clock pin
VOSC
-0.2 ~ +7.2
V Pin 31 (Note 1)
Operating temperature range
Topr
-40 ~ +85
Storage temperature range
Tstg -55 ~ +150
Maximum junction temperature
Tjmax
+150
(Note 1) A voltage that can be applied with reference to GND (pins 5, 18, 19, 42, and 43)
(Note 2) Pd and Tjmax=150must not be exceeded.
(Note 3) 114.3mm × 76.2mm × 1.6mm FR4 2-layer glass epoxy board (Copper Area 5505mm2) installed.
If used under Ta=25or higher, reduce 26.2mW for increase of every 1. The board is provided with thermal via.
(Note 4) 114.3mm × 76.2mm × 1.6mm FR4 4-layer glass epoxy board (Copper Area 5505mm2) installed.
If used under Ta=25or higher, reduce 38.4mW for increase of every 1. The board is provided with thermal via.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/15
2010.05 - Rev.B




BD5426MUV pdf, 반도체, 판매, 대치품
BD5426MUV
Electrical characteristic curves (Reference data) – Continued
Technical Note
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100
90
80
70
60
50
40
30
20
10
0
0
Vcc=10V
RL=8Ω
fin=1kHz
5 10 15
OUTPUT POWER (W/ch)
Fig. 7 Efficiency - Output power
20
100
90
80
70
60
50
40
30
20
10
0
0
Vcc=12V
RL=8Ω
fin=1kHz
5 10 15
OUTPUT POWER (W/ch)
20
Fig. 8 Efficiency - Output power
100
90
80
70
60
50
40
30
20
10
0
0
Vcc=16.5V
RL=8Ω
fin=1kHz
5 10 15
OUTPUT POWER (W/ch)
20
Fig. 9 Efficiency - Output power
100
90 RRLL==88Ω
80 Withoutsignal
70
60
50
40
30
20
10
0
8 10 12 14
VCC (V)
Sampling
Mute
16 18
Fig. 11 Current consumption - Power supply voltage
3
Vcc=16.5V
Vcc=12V
2
Vcc=10V
1
RL=8Ω
fin=1kHz
0
0 5 10 15 20 25 30 35 40
TOTAL OUTPUT POWER (W)
Fig. 10 Current consumption - Output power
0
-20
-40
-60
-80
-100
-120
-140
10
WRVVRCLLci=tC=ch8=8o=1Ωu12t2VsVignal
BW=2020kHz
BW=20~20kHz
100 1000 10000 100000
FREQUENCY (Hz)
Fig. 12 FFT of Output Noise Voltage
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
4/15
2010.05 - Rev.B

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BD5426MUV 전자부품, 판매, 대치품
BD5426MUV
Block diagram
Top View
Technical Note
www.DataSheet4U.com
12 11 10 9 8 7 6 5 4 3 2 1
N.C. 13 N.C.
VCCP1P 14
VCCP1P 15
OUT1P 16
OUT1P 17
GNDP1 18
GNDP1 19
OUT1N 20
OUT1N 21
VCCP1N 22
VCCP1N 23
N.C. 24 N.C.
Power Limit
DRIVER
1P
PWM1 PWM2
DRIVER
2P
DRIVER
1N
Protections & Logic
Under Voltage Protection
High Temperature Protection
Output Short Protection
Output DC Voltage Protection
DRIVER
2N
N.C. 48 N.C.
47 VCCP2P
46 VCCP2P
45 OUT2P
44 OUT2P
43 GNDP2
42 GNDP2
41 OUT2N
40 OUT2N
39 VCCP2N
38 VCCP2N
N.C. 37 N.C.
N.C. N.C.
25 26 27 28 29 30 31 32 33 34 35 36
Outer Dimensions and Inscriptions
Fig. 23 Pin Assignment Diagram
TYPE
BD5426
1PIN MARK
Lot No.
Fig. 24 Outer Dimensions and Inscriptions of VQFN048V7070 Package
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
7/15
2010.05 - Rev.B

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BD5426MUV

Analog Input / BTL Output Class-D Speaker Amplifier

ROHM Semiconductor
ROHM Semiconductor

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