ROHM BD5427EFS

Middle Power Class-D Speaker Amplifiers
Analog Input / BTL Output
Class-D Speaker Amplifier
BD5427EFS
No.10075EBT06
●Description
BD5427EFS is a 7W + 7W 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 80% (7W + 7W output with 8Ω load).
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 14W. 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 80% (7W + 7W output with 8Ω load), which is the highest grade in the industry and low heat-generation.
2) Driving a lowest rating load of 6Ω is allowed.
3) Pop noise upon turning power on/off and power interruption has been reduced.
4) High-quality audio muting is implemented by soft-switching technology.
5) 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.
6) A master/slave function allowing synchronization of multiple devices reduces beat noises.
7) Adjustment of internal PWM sampling clock frequencies (250kHz to 400kHz) allows easy protective measures
against unwanted radio emission to AM radio band.
8) A compact back-surface heat radiation type power package is employed.
HTSSOP-A44(5mm × 7.5mm × 1.0mm, pitch 0.8mm
●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
Symbol
Ratings
Unit
Conditions
VCC
+20
V
Pin 7, 8, 15, 16, 29, 30, 37, 38, 40
(Note 1, 2)
2.0
W
(Note 3)
4.5
W
(Note 4)
Power dissipation
Pd
Input voltage for signal pin
VIN
-0.2 to +7.2
V
Pin 1, 44 (Note 1)
Input voltage for control pin
VCONT
-0.2 to Vcc+0.2
V
Pin 20, 24 (Note 1)
Input voltage for clock pin
VOSC
-0.2 to +7.2
V
Pin 23 (Note 1)
Operating temperature range
Topr
-40 to +85
℃
Storage temperature range
Tstg
-55 to +150
℃
Tjmax
+150
℃
Maximum junction temperature
(Note 1) A voltage that can be applied with reference to GND (pins 11, 12, 33, 34, and 43)
(Note 2) Pd and Tjmax=150℃must not be exceeded.
(Note 3) 70mm × 70mm × 1.6mm FR4 One-sided glass epoxy board (Back copper foil 0%) installed.
If used under Ta=25℃or higher, reduce 16mW for increase of every 1℃. The board is provided with thermal via.
(Note 4) 70mm × 70mm × 1.6mm FR4 Both-sided glass epoxy board (Back copper foil 100%) installed.
If used under Ta=25℃or higher, reduce 36mW for increase of every 1℃. The board is provided with thermal via.
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© 2010 ROHM Co., Ltd. All rights reserved.
1/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Operating Conditions
The following values assume Ta =25℃. Check for latest values in delivery specifications.
Parameter
Symbol
Ratings
Unit
Conditions
Supply voltage
VCC
+10 to +16.5
V
Pin 7, 8, 15, 16, 29, 30, 37, 38, 40
Load resistance
RL
6 to 16
Ω
(Note 5)
(Note 5) Pd should not be exceeded.
●Electrical Characteristics
Except otherwise specified Ta = 25℃, VCC = 12V, fIN = 1kHz, Rg = 0Ω, RL = 8Ω,MUTEX="H", MS="L"
For latest values, refer to delivery specifications.
Parameter
Symbol
Limits
Unit
Conditions
Circuit current 1 (Sampling mode)
ICC1
25
mA
With no signal
Circuit current 2 (Muting mode)
ICC2
10
mA
MUTEX = “L”
“H” level input voltage
VIH
2.3 to 12
V
MUTEX, MS
“L” level input voltage
VIL
0 to 0.8
V
MUTEX, MS
Voltage gain
GV
28
dB
PO = 1W
Maximum output power 1 (Note 6)
PO
7
W
THD+N = 10%
Total harmonic distortion (Note 6)
THD
0.1
%
PO = 1W, BW=20Hz to 20kHz
Crosstalk
CT
85
dB
PO = 1W, Rg = 0Ω, BW = IHF-A
Output noise voltage (Sampling mode)
VNO
80
µVrms
Rg = 0Ω, BW = IHF-A
Residual noise voltage (Muting mode)
VNOM
1
µVrms
Rg = 0Ω, BW = IHF-A, MUTEX = “L”
Internal sampling clock frequency
FOSC
250
kHz
Whole circuit
Control circuit
Audio circuit
MS = “L” (In master operation)
(Note 6) The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components,
and power supplies. The reference values are those applicable to the device and components directly installed on a board specified by us.
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© 2010 ROHM Co., Ltd. All rights reserved.
2/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Electrical characteristic curves (Reference data)
(1) Under Stereo Operation(RL=8Ω)
100
6kHz
1
0.1
100Hz
0.01
1
0.1
1kHz
0.01
0.001
Vcc=12V
RL=8Ω
Po=1W
BW=20~20kHz
10
THD+N (%)
10
THD+N (%)
100
Vcc=12V
RL=8Ω
BW=20~20kHz
0.1
1
0.01
10
10
100
100
100000
Fig. 2 THD+N - Frequency
0
40
35
Vcc=12V
RL=8Ω
Po=1W
BW=20~20kHz
-20
30
25
CROSSTALK (dB)
VOLTAGE GAIN (dB)
10000
FREQUENCY (Hz)
OUTPUT POWER (W)
Fig. 1 THD+N - Output power
Vcc=12V
RL=8Ω
Po=1W
L=33μ
H
C=0.47μF
Cg=0.1μF
20
15
10
5
0
-40
-60
-80
-100
10
100
1000
10000
10
100000
100
Fig. 3 Voltage gain - Frequency
20
OUTPUT POWER (W)
Vcc=12V
RL=8Ω
fin=1kHz
BW=20~20kHz
-40
-60
-80
-100
0.001
0.01
0.1
1
10
100
15
10
5
0
8
Crosstalk - Output power
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© 2010 ROHM Co., Ltd. All rights reserved.
100000
RL=8Ω
fin=1kHz
THD=10%
OUTPUT POWER (W)
Fig. 5
10000
Fig. 4 Crosstalk - Frequency
0
-20
1000
FREQUENCY (Hz)
FREQUENCY (Hz)
CROSSTALK (dB)
1000
Fig. 6
3/15
10
12
14
VCC (V)
16
18
Output power - Power supply voltage
2010.05 - Rev.B
Technical Note
BD5427EFS
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
EFFICIENCY (%)
●Electrical characteristic curves (Reference data) – Continued
.
Vcc=10V
RL=8Ω
fin=1kHz
0
5
10
15
100
90
80
70
60
50
40
30
20
10
0
20
Vcc=12V
RL=8Ω
fin=1kHz
0
5
OUTPUT POWER (W/ch)
Fig. 8 Efficiency - Output power
Vcc=16.5V
RL=8Ω
fin=1kHz
Vcc=16.5V
Vcc=12V
2
ICC (A)
EFFICIENCY (%)
20
3
Vcc=10V
1
RL=8Ω
fin=1kHz
0
0
5
10
OUTPUT POWER (W/ch)
0
15
100
90
80
70
60
50
40
30
20
10
0
5
10
15
20
25
30
35
40
TOTAL OUTPUT POWER (W)
Fig. 9 Efficiency - Output power
Fig. 10 Current consumption - Output power
0
RL=8Ω
無信号時signal
Without
Vcc=12V
RL=8Ω
Without signal
無信号時
BW=20~20kHz
-20
NOISE FFT (dBV)
ICC (mA)
15
OUTPUT POWER (W/ch)
Fig. 7 Efficiency - Output power
100
90
80
70
60
50
40
30
20
10
0
10
Sampling
Mute
-40
-60
-80
-100
-120
-140
8
10
12
14
VCC (V)
16
10
18
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1000
10000
100000
FREQUENCY (Hz)
Fig. 11 Current consumption - Power supply voltage
© 2010 ROHM Co., Ltd. All rights reserved.
100
Fig. 12 FFT of Output Noise Voltage
4/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Electrical characteristic curves (Reference data) – Continued
.
MUTEX
Pin 20
Vcc=12V
1 0 V/div
RL = 8 Ω
MUTEX
Pin 20
1 0 V/div
RL = 8 Ω
Po=500 m W
TM
Pin 2 6
fi n = 5 0 0 H z
5 V/div
Vcc=12V
2 V/div
Po=500 m W
TM
Pin 26
5 V / div
2 V / div
Speaker
output
Speaker
output
fi n = 5 0 0 H z
1 0 m s e c/ div
1 0 m s e c/ div
Fig. 13 Wave form when Releasing Soft-mute
Fig. 14 Wave form when Activating Soft-mute
VCCA
VCCA
VHOLD
Pin 27
5V/div
VHOLD
Pin 27
TM
Pin 26
5V/div
Vcc=12V
RL =8 Ω
Po=500mW
TM
fin=3kHz
Pin 26
2V/div
Speaker
output
5V/div
2V/div
2msec/div
Fig. 15 Wave form on Instantaneous Power Interruption
(20msec / div)
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Vcc=12V
RL =8 Ω
Po=500mW
fin=3kHz
Speaker
output
20msec/div
© 2010 ROHM Co., Ltd. All rights reserved.
5V/div
5/15
Fig. 16 Wave form on Instantaneous Power Interruption
(2msec / div)
2010.05 - Rev.B
Technical Note
BD5427EFS
●Electrical characteristic curves (Reference data)
(2) Under Stereo Operation(RL=6Ω)
.
OUTPUT POWER (W)
25
RL=6Ω
fin=1kHz
THD=10%
20
15
10
5
0
8
10
12
14
VCC (V)
16
18
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
EFFICIENCY (%)
Fig. 17 Output power - Power supply voltage
Vcc=10V
RL=6Ω
fin=1kHz
0
5
10
15
OUTPUT POWER (W/ch)
100
90
80
70
60
50
40
30
20
10
0
20
0
5
10
15
OUTPUT POWER (W/ch)
20
Fig. 19 Efficiency - Output power
4
3
Vcc=16.5V
Vcc=12V
ICC (A)
EFFICIENCY (%)
Fig. 18 Efficiency - Output power
100
90
80
70
60
50
40
30
20
10
0
Vcc=12V
RL=6Ω
fin=1kHz
Vcc=16.5V
RL=6Ω
fin=1kHz
2
Vcc=10V
RL=6Ω
fin=1kHz
1
0
0
5
10
15
OUTPUT POWER (W/ch)
20
0
5
10
15
20
25
30
35
40
TOTAL OUTPUT POWER (W)
Fig. 20 Efficiency - Output power
Fig. 21 Current consumption - Output power
Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing
additional heat sinks.
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6/15
2010.05 - Rev.B
0.08 ± 0.05
0.85 ± 0.05
1.0 MAX
0.75 ± 0.1
0.95 ± 0.2
0.85
Fig. 23
© 2010 ROHM Co., Ltd. All rights reserved.
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Fig. 22
44
(6.0)
1
1PIN MARK
7/15
12
13
GNDP1
OUT1N
BD5427EFS
20
M U TEX
M ute
Control
ERROR
W A RNING
N.C. 22 N.C.
N.C. 21 N.C.
19
18
W ARNING
ERROR
17
Output DC V ol tage Protection
Output Short Protection
H igh Temperature Protection
Under V ol tage Protection
Protections & Logic
DRI VER
1N
BSP1N
DRI VER
1P
16
PW M 2
DRI VER
2N
V CCP1N
15
11
GNDP1
V CCP1N
10
OU T1P
14
9
OU T1P
OUT1N
8
V CCP1P
PW M 1
DRI VER
2P
(5.0)
5 N.C.
N.C.
7
4 N.C.
N.C.
V CCP1P
3
N.C.
6
N.C.
2
N.C.
BSP1P
N.C.
1
IN1
Clock
Control
Ramp
Generator
Sof t M ute
Power-off
Detector
23 OSC
24 M S
25 ROSC
26 TM
27 V HOL D
28 BSP2N
29 V CCP2N
30 V CCP2N
31 OUT2N
32 OUT2N
33 GNDP2
34 GNDP2
35 OUT2P
36 OUT2P
37 V CCP2P
38 V CCP2P
39 BSP2P
40 V CCA
41 FIL P
FIL P
V CCA
42 FIL A
43 GND A
FIL A
GND A
44 IN2
BD5427EFS
Technical Note
●Pin Assignment
Top View
Pin Assignment Diagram
●Outer Dimensions and Inscriptions
(MAX 18.85 include BURR)
18.5 ± 0.1
TYPE
23
22
Lot No.
0.8
(Unit: mm)
Outer Dimensions and Inscriptions of HTSSOP-A44 Package
2010.05 - Rev.B
Technical Note
BD5427EFS
●Explanation of Pin Functions (Provided pin voltages are typical values.)
No.
Symbol
Pin voltage
Pin description
Internal equalizing circuit
40
1
44
IN1
IN2
3.5V
ch1 Analog signal input pin
ch2 Analog signal input pin
20k
1/44
Input audio signal via a capacitor.
43
6
7, 8
BSP1P
VCCP1P
-
Vcc
ch1 positive bootstrap pin
Connect a capacitor
ch1 positive power system power
supply pin
7 ,8
6
9,1 0
9, 10
OUT1P
Vcc to 0V
11, 12
GNDP1
0V
ch1 positive PWM signal output pin
Connect with output LPF.
1 1 ,1 2
ch1 power system GND pin
1 5 ,1 6
13, 14
OUT1N
Vcc to 0V
ch1 negative PWM signal output pin
Connect with output LPF
17
1 3 ,1 4
15, 16
17
VCCP1N
BSP1N
Vcc
-
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© 2010 ROHM Co., Ltd. All rights reserved.
ch1 negative power system power
supply pin
ch1 negative bootstrap pin
Connect a capacitor.
8/15
1 1 ,1 2
2010.05 - Rev.B
Technical Note
BD5427EFS
●Explanation of Pin Functions - continued
No.
Symbol
Pin voltage
Pin description
Internal equalizing circuit
40
Warning output pin
18
WARNING
H: 5V
L: 0V
Pin to notify operation warning.
H: Under warning
L: Normal operation
2k
18
Connect a resister.
43
40
Error output pin
19
ERROR
H: 5V
L: 0V
A pin for notifying operation errors.
H: Error
L: Normal operation
2k
19
Connect a resister.
43
40
120k
Audio mute control pin
MUTEX
-
H: Mute off
L: Mute on
80k
20
20
43
2, 3
4, 5
21, 22
N.C.
-
N.C. pin
Nothing is connected with IC internal circuit.
40
Sampling clock signal input/output pin
23
OSC
-
When using two or more sampling clocks,
connect via a capacitor.
23
43
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© 2010 ROHM Co., Ltd. All rights reserved.
9/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Explanation of Pin Functions - continued
No.
Symbol
Pin voltage
Pin description
Internal equalizing circuit
40
Master/Slave switching pin
MS
-
120k
24
80k
24
Switching of master/slave functions on a
sampling clock signal.
H: Slave operation
L: Master operation
43
40
Internal PWM sampling clock frequency
setting pin
ROSC
5.6V
25
Usually the pin is used open.
To adjust an internal sampling clock
frequency, connect a resister.
32k
25
43
40
Audio muting constant setting pin
26
TM
0 to 5V
26
Connect a capacitor.
43
40
VHOLD
0.68×Vcc
Connect a capacitor.
To adjust a detecting voltage, connect a
resister.
27
390k
27
180k
Instantaneous power interruption
detecting voltage setting pin
43
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© 2010 ROHM Co., Ltd. All rights reserved.
10/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Explanation of Pin Functions - continued
No.
Symbol
Pin voltage
28
BSP2N
-
Pin description
ch2 negative bootstrap pin
Connect a capacitor.
Internal equalizing circuit
29,30
28
29, 30
VCCP2N
Vcc
31, 32
OUT2N
Vcc to 0V
ch2 negative power system power supply pin
31,32
ch2 negative PWM signal output pin
Connect an output LPF.
33, 34
GNDP2
0V
35, 36
OUT2P
Vcc to 0V
ch2 power system GND pin
33,34
ch2 positive PWM signal output pin
37,38
Connect an output LPF.
39
37, 38
VCCP2P
Vcc
ch2 positive power system power supply pin
35,36
ch2 positive bootstrap pin
39
BSP2P
Connect a capacitor.
33,34
40
VCCA
Vcc
Analog system power pin
40
41
FILP
Vcc+35
12
PWM system bias pin
41
Connect a capacitor.
43
40
Analog signal system bias pin
42
FILA
3.5V
42
Connect a capacitor.
43
43
GNDA
0V
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Analog system power supply pin
11/15
2010.05 - Rev.B
SP ch1
L9
© 2010 ROHM Co., Ltd. All rights reserved.
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Fig. 24
C8
C9
C7
C13
C10
12/15
C15
C17
M ute
Control
Output DC V ol tage Protection
Clock
Control
Ramp
Generator
23
24
C23
25 OPEN
26
27
C26
C27
GN DP
CLK I /O
GNDD
N.C. 22 N.C.
Output Short Protection
High Temperature Protection
Under V ol tage Protection
Soft M ute
V CCP
L31
L35
M A STER
SL A VE
INPUT
ch-2
C31
N.C. 21 N.C.
20
19
ERROR
C42
R19
Power-off
Detector
C29
18
Protections & Logi c
28
W ARNING
17
DRI VER
1N
29
DRI VER
1P
16
DRI VER
2N
30
DRI VER
2P
15
31
C37
M UTE
C6
14
32
33
34
35
36
37
38
39
40
41
FIL P
V CCA
C40
13
12
11
10
PW M 2
C39
9
8
7
N.C.
PW M 1
C41
C38
ERROR OU TPUT
5
N.C.
N.C.
42
43
FI L A
GND A
C44
V CCA
R18
4
N.C.
N.C.
N.C.
44
C35
W ARNING OU TPU T
3
N.C.
6
2
N.C.
1
C43
GNDP
V CCP
C1
GNDA
L13
INPU T
ch-1
SP ch2
BD5427EFS
Technical Note
●Application Circuit Diagram
・Vcc=10V to 16.5V
C32
C28
Circuit Diagram of Stereo Operation with 8Ω Load
2010.05 - Rev.B
Technical Note
BD5427EFS
able 1 BOM List of Stereo Operation with 8Ω Load
No. Item
Part Number
Vendor
mm
inch
Rated
voltage
Tolerance
Temperature
characteristics
Quantity
Reference
-
-
-
-
1
IC1
IC BD5427EFS
2
C
GRM219B31E684KA88D MURATA
2012
0805
0.68µF
25V
±10%
±10%
4
C6, C17, C28, C39
3
C
GRM188R11H104KA93
MURATA
1608
0603
0.1µF
50V
±10%
±10%
5
C7, C15, C29, C37, C40
4
C
GRM21BB11H104KA01
MURATA
2012
0805
0.1µF
50V
±10%
±10%
4
C9, C13, C31, C35
5
C
25ST225M3216
Rubycon
3225
1210
2.2µF
25V
±20%
±5%
2
C1, C44
6
C
50ST474M3225
Rubycon
3225
1210
0.47µF
50V
±20%
±5%
2
C10, C32
7
C
GRM21BB31E335KA75
MURATA
2012
0805
3.3µF
25V
±10%
±10%
1
C27
8
C
GRM188B11E104KA
MURATA
1608
0603
0.1µF
25V
±10%
±10%
2
C23, C26
9
C
GRM21BB11C105KA
MURATA
2012
0805
1µF
16V
±10%
±10%
1
C41
10
C
GRM21BB31C106KE15
MURATA
2012
0805
10µF
16V
±10%
±10%
1
C42
11
C
25SVPD10M
SANYO
6666
2626
10µF
25V
±20%
±25%
3
C8, C38, C43
12
R
MCR01MZPF1003
ROHM
1005
0402
100kΩ
50V
±1%
±200ppm/℃
2
R18, R19
Part Number
Vendor
Value
Tolerance
DC
Resistance
Rated
DC Current
Quantity
33µH×2
±20%
52mΩmax.
2.0A max.
2
13
L
7G09B-330M
SAGAMI
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© 2010 ROHM Co., Ltd. All rights reserved.
HTSSOP-A44
Value
1
No. Item
ROHM
Configuration
Configuration
mm
10×9×10
13/15
Reference
L9, L13, L31, L35
2010.05 - Rev.B
Technical Note
BD5427EFS
●Notes on Usage
1. About absolute maximum ratings
If an applied voltage or an operating temperature exceeds an absolute maximum rating, it may cause destruction of a
device. A result of destruction, whether it is short mode or open mode, is not predictable. Therefore, provide a physical
safety measure such as fuse, against a special mode that may violate conditions of absolute maximum ratings.
2. About power supply line
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as a electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage
on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute
maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp
diode between the power supply and GND pins.
3. Potential of GND (11, 12, 33, 34, and 43 pins)
Potential of the GND terminal must be the lowest under any operating conditions.
4. About thermal design
Perform thermal design with sufficient margins, in consideration of maximum power dissipation Pd under actual operating
conditions. This product has an exposed frame on the back of the package, and it is assumed that the frame is used with
measures to improve efficiency of heat dissipation. In addition to front surface of board, provide a heat dissipation pattern
as widely as possible on the back also.
A class-D power amplifier has heat dissipation efficiency far higher than that of conventional analog power amplifier and
generates less heat. However, extra attention must be paid in thermal design so that a power dissipation Pdiss should not
exceed the maximum power dissipation Pd.
Tjmax - Ta
Tjmax: Maximum temperature junction = 150[℃]
W 
Pd 
Maximum power dissipation
θ ja
Ta: Operating ambient temperature [℃]
θja: Package thermal resistance [℃/W]
1



Po:
Output power [W]


P
diss

P
O
1
W


Power dissipation
η

η: Efficiency


5. About operations in strong electric field
Note that the device may malfunction in a strong electric field.
6. Thermal shutdown (TSD) circuit
This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the output
transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC avoiding
thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax = 150℃, and is not intended to
protect and secure an electrical appliance. Accordingly, do not use this circuit function to protect a customer's electrical
appliance.
7. About shorting between pins and installation failure
Be careful about direction and displacement of an LSI when installing it onto the board. Faulty installation may destroy
the LSI when the device is energized. In addition, a foreign matter getting in between LSI pins, pins and power supply,
and pins and GND may cause shorting and destruction of the LSI.
8. About power supply startup and shutdown
When starting up a power supply, be sure to place the MUTEX pin (pin 20) at “L” level. When shutting down a power
supply also, be sure to place the pin at “L” level. Those processes reduce pop noises generated upon turning on and off
the power supply. In addition, all power supply pins must be started up and shut down at the same time.
9. About WARNING output pin (pin 18) and ERROR output pin (pin 19)
A WARNING flag is output from the WARNING output pin upon operation of the high-temperature protection function and
under-voltage protection function. And an ERROR flag is output from the ERROR output pin upon operation of VCC/GND
shorting protection function and speaker DC voltage applying protection function. These flags are the function which the
condition of this product is shown in. The use which aimed at the protection except for this product is prohibition.
10. About N.C. pins (pins 2, 3, 4, 5, 21 and 22)
The N.C. (Non connection) pins are not connected with an internal circuit. Leave the pins open or connect them to GND.
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14/15
2010.05 - Rev.B
Technical Note
BD5427EFS
●Ordering part number
B
D
5
Part No.
4
2
7
Part No.
E
F
-
S
Package
EFS:HTSSOP-44
E
2
Packaging and forming specification
E2: Embossed tape and reel
HTSSOP-A44
<Tape and Reel information>
18.5±0.1
(MAX 18.85 include BURR)
(6.0)
0.85
0.5±0.15
(5.0)
1
1.0±0.2
23
7.5±0.1
9.5±0.2
44
+6°
4° −4°
Tape
Embossed carrier tape (with dry pack)
Quantity
1500pcs
Direction
of feed
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
)
22
1PIN MARK
+0.05
0.17 -0.03
1.0MAX
S
0.08±0.05
0.85±0.05
0.08 S
0.8
+0.05
0.37 -0.04
0.08
M
1pin
Reel
(Unit : mm)
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© 2010 ROHM Co., Ltd. All rights reserved.
15/15
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2010.05 - Rev.B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
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http://www.rohm.com/contact/
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© 2010 ROHM Co., Ltd. All rights reserved.
R1010A