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PDF BD28620MUV Datasheet ( Hoja de datos )

Número de pieza BD28620MUV
Descripción 20W+20W Class D Speaker Amplifier
Fabricantes ROHM 
Logotipo ROHM Logotipo

Total 30 Páginas
		
BD28620MUV Hoja de datos, Descripción, Manual
Datasheet
Middle Power Class-D Speaker Amplifier Series
20W+20W
Class D Speaker Amplifier for Digital Input
BD28620MUV
General Description
BD28620MUV is a Class D Speaker Amplifier designed for
Flat-panel TVs in particular for space-saving and
low-power consumption. This IC delivers an output power
of 20W+20W. This IC employs state-of-the-art Bipolar,
CMOS, and DMOS (BCD) process technology. With this
technology, the IC can achieve high efficiency. In addition,
the IC is packaged in a compact back-surface heat-sink
type power package to achieve low power consumption
and low heat generation and to eliminate need for external
heat-sink. With this package, total output power is only
34W as compared to 40W total output power of package
with external heat-sink This product satisfies all needs for
drastic downsizing, low-profile structures and powerful
high quality playback of sound systems.
Features
1 Digital Audio Interface
I2S format
SDATA: 16 / 20 / 24bit
LRCLK (fS): 32kHz / 44.1kHz / 48kHz
BCLK: 64fS (fixed)
MCLK: 256fS / 512fS Automatic Identification)
Low supply current at RESET mode.
Output Feedback Circuitry which prevents decrease of
sound quality caused by change of power supply
voltage, achieves low noise and low distortion,
eliminates need for large electrolytic-capacitors
Variable Gain (17dB / 20dB / 26dB)
Wide power supply voltage range (8.5V to 24V)
High efficiency, low heat
Pop noise prevention at power supply ON/OFF
Soft Muting Technology
High reliability design by built-in protection circuits
- High temperature protection
- Under voltage protection
- Output short protection
- Output DC voltage protection
- Clock stop protection (MCLK, BCLK, LRCLK)
Small package (VQFN024V4040)
Key Specifications
Supply Voltage:
8.5V to 24V
Speaker Output Power:
17W+17W (Typ)
(VCC=18V, RL=8Ω, Power Limit=OFF)
Total Harmonic Distortion: 0.08% (Typ) @PO=1W
(VCC=12V, RL=8Ω, Power Limit=10W)
Crosstalk:
90dB (Typ)
PSRR:
60dB (Typ)
Output Noise Voltage:
Standby Current:
150μVrms (Typ)
33μA (Typ)
Operating Temperature Range: -25°C to +85°C
Package
VQFN024V4040
W(Typ) x D(Typ) x H(Max)
4.00mm x 4.00mm x 1.00mm
VQFN024V4040
Typical Application Circuit
SP ch1
(Lch)
SP ch2
(Rch)
Applications
- Flat Panel TVs (LCD, Plasma)
- Home Audio (Sound Bar)
- Amusement Equipment
- Electronic Music Equipment
- Desktop PC, etc.
Digital Audio Source
Figure 1. Typical Application Circuit
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/46
TSZ02201-0C1C0E900100-1-2
16.Mar.2015 Rev.004

1 page

BD28620MUV pdf
BD28620MUV
Block Diagram
BSP2P
18
REGG
17
REGD
16
GNDA
15
VCCA
14
OUT1N
13
OUT2P
VCCP2
GNDP2
BSP2N
OUT2N
Driver
FET
2P
Output Short Protection
Output DC Voltage Protection
High Temperature Protection
Under Voltage Protection
Clock Stop Protection
Driver
FET
1N
feedback
PWM
Modulator
feedback
Driver
FET
2N
×4 Over
Sampling Digital Filter
Driver
FET
1P
ERROR
I2S I/F
Control I/F
1
MCLK
234
SDATA BCLK LRCLK
Figure 3. Block Diagram
5
PLIMT
6
RSTX
BSP1N
GNDP1
VCCP1
BSP1P
OUT1P
MUTEX
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/46
TSZ02201-0C1C0E900100-1-2
16.Mar.2015 Rev.004

5 Page

BD28620MUV arduino
BD28620MUV
Typical Performance Curves - continued (4/11)
(Unless otherwise specified, Ta=25°C, VCC=18V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, fS=48kHz, MCLK=256fS,
PLIMIT=Pull up(27kΩ), Snubber circuit: C=680pF, R=5.6Ω, ROHM 4-layer Board)
35
PLIMT=H
30 RL=4Ω
25
THD+N=10%
20
15
THD+N=1%
10
5
0
6 8 10 12 14 16 18 20 22 24 26
Supply VoltVagCeC :[VV]CC [V]
Figure 17. Output Power vs Supply Voltage
(4Ω)
4
PLIMT=H
3.5 RL=4Ω
3 VCC=12V
2.5
2
VCC=14V
1.5
1
0.5
0
0 5 10 15 20 25
Output Power [W/CH]
Figure 18. Circuit Current vs Output Power
(4Ω)
35
PLIMT=H
30 RL=4.8Ω
25
THD+N=10%
20
15
THD+N=1%
10
5
0
6 8 10 12 14 16 18 20 22 24 26
Supply Voltage : VCC [V]
Figure 19. Output Power vs Supply Voltage
(4.8Ω)
3
PLIMT=H
2.5 RL=4.8Ω
2 VCC=12V
1.5 VCC=18V
1
0.5
0
0 5 10 15 20
Output Power [W/CH]
25
Figure 20. Circuit Current vs Output Power
(4.8Ω)
Dotted line means power dissipation is exceeded.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
11/46
TSZ02201-0C1C0E900100-1-2
16.Mar.2015 Rev.004

11 Page


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