Small-sized Class-D Speaker Amplifiers
Analog Input
Monaural Class-D Speaker Amplifier
No.10101EAT02
BD5461GUL
●Description
BD5461GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular phones, mobile
audio products and the others.LC-filter of speaker output is unnecessary, and the number of external components is three.
It is suitable for the application of battery drive because of high efficiency and low power consumption.
Also, stand-by current is 0µA (typ.), and fast transitions from standby to active with little pop noise. It is suitable for
applications that switch repeatedly between stand-by and active.
●Features
1) No LC filter required
2) Only three external components
3) High power 2.5W/4Ω/BTL (VDD=5V, RL=4Ω, THD+N=10%, typ.)
4) High power 0.85W/8Ω/BTL (VDD=3.6V, RL=8Ω, THD+N=10%, typ.)
5) Gain 12dB
6) Analog differential input / PWM digital output
7) Pop noise suppression circuitry
8) Built-in standby function
9) Protection circuitry (Short protection [Auto recover without power cycling], Thermal shutdown, Under voltage lockout)
10) Very small package 9-Bump WL-CSP (1.6*1.6*0.55mmMAX)
●Applications
Mobile phones, PDA, Mobile electronics applications, Note-book PC etc.
●Absolute Maximum Ratings(Ta=25℃)
Parameter
Power Supply Voltage
Power Dissipation
Symbol
Ratings
VDD
7.0
Pd
690
Unit
V
*1
mW
Storage Temperature Range
Tstg
-55 ～ +150
℃
STBY Terminal Input Range
Vstby
-0.1～VDD+0.1
V
Vin
-0.1～VDD+0.1
V
IN+, IN- Terminal Input Range
*1 When mounted on a 50 mm×58mm Rohm standard board, reduce by 5.52 mW/°C above Ta = +25 °C.
●Operating Conditions
Parameter
Symbol
Ratings
Unit
Power Supply Voltage
VDD
+2.5 ～ +5.5
V
Temperature Range
Topr
-40 ～ +85
℃
※ This product is not designed for protection against radioactive rays
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© 2010 ROHM Co., Ltd. All rights reserved.
1/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Electric Characteristics
(Unless otherwise specified, Ta=25℃, VDD=3.6V, f=1kHz, RL=8Ω, AC item=LC Filter ; L=22µH, C=1µF )
Rating
Parameter
Symbol
Unit
Conditions
MIN.
TYP.
MAX.
Circuit current (No signal)
ICC
―
2.0
4.0
mA
Active mode, No load
Circuit current (Standby)
ISTBY
―
0.1
2
μA
Standby mode
Output power 1
PO1
450
680
―
mW
BTL, f=1kHz, THD+N=1% *1
Output power 2
PO2
550
850
―
mW
BTL, f=1kHz, THD+N=10% *1
Voltage gain
GV
11.4
11.9
12.4
dB
BTL
Power Supply Rejection Ratio
PSRR
45
53
―
dB
BTL, f=1kHz, Vripple=0.1Vpp *2
Output offset voltage
ΔVo
-25
0
+25
mV
Vin=0V, BTL
Switching Frequency
fosc
175
250
325
kHz
Start-up time
Ton
0.39
0.51
0.73
msec
High-level
VSTBYH
1.4
―
VDD
V
Active mode
Low-level
VSTBYL
0
―
0.4
V
Standby mode
High-level
ISTBYH
6
12
18
μA
VSTBY=3.6V
Low-level
ISTBYL
-5
0
5
μA
VSTBY=0V
Standby input Voltage
Standby input current
BTL=Bridged Tied Load (Voltage between A3-C3.), *1;B.W.=400～30kHz,*2;DIN AUDIO
●Measurement Circuit Diagram
Vripple
A
10μ
VDD
VDD B1
VSTBY
STBY
C2
A
Bias
B2 PVDD
OUTA3
OSC
22μH
1μ
IN+
A1
0.1μ
8
Vin
HBridge
PWM
Vin
INC1
0.1μ
OUT+
C3
VSE
V
VSE
VBTL
22μH
1μ
GND A2
V
V
B3 PGND
●Active / Standby Control
STBY Pin(C2pin)
Mode
Pin level
Conditions
Active
H
IC active
Standby
L
IC shutdown
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© 2010 ROHM Co., Ltd. All rights reserved.
2/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Package Outlines
TOP VIEW
BOTTOM VIEW
5461
LOT No.
(Unit: mm)
WL-CSP ： VCSP50L1
●Block Diagram
●Pin Assignment Chart
VDD B1
B2 PVDD
STBY
C2
Bias
OSC
OUTA3
IN+
A1
HBridge
PWM
INC1
GND A2
OUT+
C3
Pin No.
Pin Name
A1
IN+
A2
GND
A3
OUT-
B1
VDD
B2
PVDD
B3
PGND
C1
IN-
C2
STBY
C3
OUT+
B3 PGND
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3/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Application Circuit Example
10μ
VDD B1
B2 PVDD
H：Active
STBY
C2
L：Shutdown
Audio
Input+
Differential
Input
Bias
OSC
OUTA3
IN+
A1
HBridge
PWM
Audio
Input-
INC1
GND A2
Fig.1
OUT+
C3
B3 PGND
Differential input for mobile phone
10μ
VDD B1
H：Active
STBY
C2
L：Shutdown
Differential
Input
Audio
Input+
0.1μ
IN+
A1
Audio
Input-
0.1μ
INC1
Bias
B2 PVDD
OSC
OUTA3
HBridge
PWM
GND A2
Fig.2
OUT+
C3
B3 PGND
Differential input with coupling input capacitors
10μ
VDD B1
H：Active
STBY
C2
L：Shutdown
Audio
Input
0.1μ
IN+
A1
0.1μ
INC1
Bias
B2 PVDD
OSC
OUTA3
PWM
GND A2
HBridge
OUT+
C3
B3 PGND
Fig.3 Single-Ended input
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© 2010 ROHM Co., Ltd. All rights reserved.
4/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Evaluation board Circuit Diagram
VDD
C3
10μ
VDD B1
U1
B2 PVDD
S1
H：Active
STBY
C2
L：Shutdown
Bias
OSC
300k
Audio
Input+
0.1μ
OUTA3
IN+ Rin=75k
A1
C2
Differential
Input
Audio
Input-
HBridge
PWM
0.1μ
C1
INC1
OUT+
C3
Rin=75k
GND A2
B3 PGND
Please connect to GND line.
Please connect to Power Supply
(VDD=+2.5～5.5V) line.
Please connect to Input Signal line.
Please connect to Speaker.
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© 2010 ROHM Co., Ltd. All rights reserved.
5/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Evaluation board Parts List
Qty.
Item
Description
SMD Size
2
C1, C2
Capacitor, 0.1μF
0603
1
C3
Capacitor, 10μF
A (3216)
1
S1
Slide Switch
4mm X 10.2mm
1
U1
1.6mm X 1.6mm
WL-CSP Package
1
PCB1
IC, BD5461GUL,
Mono Class-D audio amplifier
Printed-circuit board,
BD5460GUL EVM
―
Manufacturer/
Part Number
Murata
GRM188R71C104KA01D
ROHM
TCFGA1A106M8R
NKK
SS-12SDP2
ROHM
BD5461GUL
―
●Description of External components
①Input coupling capacitor (C1,C2)
It makes a Input coupling capacitor 0.1µF.
Input impedance is 75kΩ (Typ.).
It sets cutoff frequency fc by the following formula by input coupling capacitor C1(=C2) and input impedance Ri.
1
fc
[Hz]
2 π Ri C 1
In case of Ri=75kΩ, C1 (=C2)=0.1µF, it becomes fc = about 21 Hz.
②Power decoupling capacitor (C3)
It makes a power decoupling capacitor 10 µF.
When making capacitance of the power decoupling capacitor, there is an influence in the Audio characteristic.
When making small, careful for the Audio characteristic at the actual application.
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6/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Evaluation board PCB layer
TOP Layer silk pattern
TOP Layer
Bottom Layer
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7/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●The way of evaluating Audio characteristic
Evaluation Circuit Diagram
VDD
C3
0.1μ
VDD
H：Active
VDD B1
C4
10μ
B2 PVDD
STBY
L：Shutdown
C2
Bias
OSC
300k
Audio
Input+
0.1μ
OUT-
IN+
Ri=75k
A1
Audio
Input-
HBridge
PWM
0.1μ
1μF
C2
Differential
Input
Measument Instrumen
22μH
A3
INC1
C1
OUT+
1μF
C3
Ri=75k
Audio
Precision
etc
RL BTL
+
22μH
GND A2
B3 PGND
RL=Speaker Load
When measuring Audio characteristics, insert LC filter during the output terminal of IC and the speaker load and measure it.
Arrange LC filter as close as possible to the output terminal of IC.
In case of L=22μH, C=1μF, the cutoff frequency becomes the following.
1
1
fc
34 kHz
2 π LC 2 π 22 μH 1μF
Use a big current type - Inductor L.
(Reference)
TDK: SLF12575T-220M4R0
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© 2010 ROHM Co., Ltd. All rights reserved.
8/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●About the thermal design by the IC
Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum
ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two
standpoints of immediate damage and long-term reliability of operation. Pay attention to points such as the following.
Since an maximum junction temperature (TjMAX.)or operating temperature range (Topr) is shown in the absolute maximum
ratings of the IC, to reference the value, find it using the Pd-Ta characteristic (temperature derating curve).
If an input signal is too great when there is insufficient radiation, TSD (thermal shutdown) may operate.
TSD, which operates at a chip temperature of approximately +180℃, is canceled when this goes below approximately +100℃.
Since TSD operates persistently with the purpose of preventing chip damage, be aware that long-term use in the vicinity
that TSD affects decrease IC reliability.
Temperature Derating Curve
Reference data
VCSP50L1
1.5
Power Dissipation Pd (W)
measurement conditions ： IC unit and Rohm standard board mount
board size ： 50mm×58mm
1.0
0.69W
θja =
181.8℃/W
0.5
0.0
0
25
50
75
85
100
125
150
Ambient Temperature Ta(℃)
Note) Values are actual measurements and are not guaranteed.
Power dissipation values vary according to the board on which the IC is mounted. The Power dissipation of this IC when
mounted on a multilayer board designed to radiate is greater than the values in the graph above.
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9/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Typical Characteristics
Table of graphs
Items
Parameter
Efficiency
Supply current
vs Output power
4, 6
vs Output power
5, 7
vs Supply voltage
8
vs Supply voltage
9
vs Load resistance
10, 11
vs Supply voltage
12
vs Output power
13, 14
(Icc)
Shutdown current (Istby)
Output power
Figure
(Po)
Total harmonic distortion plus noise (THD+N)
vs Frequency
vs Common-mode input voltage
Supply voltage rejection ratio
(PSRR)
15, 16, 17, 18, 25, 26, 27
19
vs Frequency
20, 21, 22, 23
Common-mode rejection ratio (CMRR)
vs Frequency
24
Gain
vs Frequency
28, 29
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10/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Reference Data
Efficiency - Output power
f=1kHz RL=8Ω+33uH LC-filter(22uH+1uF)
Icc vs Output power
f=1kHz RL=8Ω+33uH LC-filter(22uH+1uF)
300
100
90
250
80
200
60
Icc [mA]
Efficiency [%]
70
150
50
VDD=2.5V
VDD=3.6V
VDD=5.0V
40
30
20
100
VDD=2.5V
VDD=3.6V
VDD=5.0V
50
10
0
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Po [W]
1
0
1.1 1.2
0.1
0.2 0.3
0.4 0.5
0.6 0.7 0.8
Po [W]
Fig.4
0.9
1
1.1 1.2
Fig.5
Icc vs Output power
f=1kHz RL=4Ω+33uH LC-filter(22uH+1uF)
Efficiency vs Output power
f=1kHz RL=4Ω+33uH LC-filter(22uH+1uF)
600
90
500
80
400
60
50
Icc [mA]
Efficiency [%]
70
VDD=2.5V
VDD=3.6V
VDD=5.0V
40
30
300
VDD=2.5V
VDD=3.6V
VDD=5.0V
200
20
100
10
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0
2
0
Po [W]
0.2
0.4
0.6
Fig.6
1
1.2
Po [W]
1.4
1.6
1.8
2
Fig.7
Icc - VDD
No load, No signal
Istby - VDD
0.5
3
0.4
Istby [uA]
2.5
Icc [mA]
0.8
2
1.5
0.3
0.2
1
0.1
0.5
0
0
0
1
2
3
VDD [V]
4
5
0
6
1
2
Fig.8
5
6
Output power vs RL THD+N=1%
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
1.4
2.4
1.2
VDD=2.5V
VDD=3.6V
VDD=5.0V
1.6
VDD=2.5V
VDD=3.6V
VDD=5.0V
1.0
Po [W]
2.0
Po [W]
4
Fig.9
Output power vs RL THD+N=10%
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
2.8
3
VDD [V]
1.2
0.8
0.8
0.6
0.4
0.4
0.2
0.0
4
8
12
16
20
24
28
0.0
32
4
RL [Ω]
8
12
16
20
24
28
32
RL [Ω]
Fig.10
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© 2010 ROHM Co., Ltd. All rights reserved.
Fig.11
11/16
2010.06 - Rev.A
Technical Note
BD5461GUL
THD+N vs Output power RL=4Ω
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
Output power vs VDD
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
10
2.5
RL=8Ω：THD+N=1%
RL=8Ω：THD+N=10%
2.0
RL=4Ω：THD+N=1%
RL=4Ω：THD+N=10%
VDD=2.5V
VDD=3.6V
THD+N [%]
Po [W]
3.0
1.5
VDD=5.0V
1
1.0
0.5
0.1
0.01
0.0
2.5
3
3.5
VDD [V]
4
4.5
5
0.1
Fig.12
1
10
Fig.13
THD+N vs Output power RL=8Ω
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
THD+N vs Frequency VDD=5.0V RL=8Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
10
VDD=2.5V
VDD=3.6V
VDD=5.0V
Po=50mW
Po=250mW
Po=1W
THD+N [%]
THD+N [%]
Po [W]
1
1
0.1
0.1
0.01
0.1
Po [W]
1
10
10
100
Fig.14
10k
100k
Fig.15
THD+N vs Frequency VDD=3.6V RL=8Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
1k
freq [Hz]
THD+N vs Frequency VDD=2.5V RL=8Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
Po=25mW
Po=125mW
Po=400mW
1
THD+N [%]
THD+N [%]
1
Po=15mW
Po=75mW
Po=200mW
0.1
0.1
0.01
0.01
10
100
1k
freq [Hz]
10k
10
100k
100
Fig.16
1k
freq [Hz]
10k
100k
Fig.17
THD+N_vs_Common Mode Input Voltage f=1kHz
RL=8Ω Po=200mW LC-filter(22uH+1uF) 400Hz-30kHz
THD+N vs Frequency RL=4Ω Po=250mW
LC-filter(22uH+1uF) 30kHz-LPF
10
2
1.8
VDD=2.5V
VDD=3.6V
VDD=5.0V
VDD=2.5V
VDD-3.6V
VDD=5.0V
1.6
THD+N [%]
THD+N [%]
1.4
1
1.2
1
0.8
0.6
0.4
0.2
0.1
10
100
1k
freq [Hz]
10k
0
100k
0
Fig.18
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1
2
3
4
5
Vic - Common Mode Input Voltage [V]
6
Fig.19
12/16
2010.06 - Rev.A
Technical Note
BD5461GUL
PSRR RL=4Ω Vripple=0.1Vpp Inputs ac-Grounded
LC-filter(22uH+1uF) 30kHz-LPF
0
PSRR RL=8Ω Vripple=0.1Vpp Inputs ac-Grounded
LC-filter(22uH+1uF) 30kHz-LPF
0
-10
-10
VDD=2.5V
VDD=3.6V
VDD=5.0V
VDD=2.5V
-20
-20
PSRR [dB]
PSRR [dB]
VDD=3.6V
VDD=5.0V
-30
-30
-40
-40
-50
-50
-60
-60
10
100
1k
f [Hz]
10k
10
100k
100
Fig.20
-10
VDD=2.5V
VDD=3.6V
VDD=5.0V
VDD=3.6V
-20
VDD=5.0V
PSRR [dB]
PSRR [dB]
-20
100k
PSRR RL=8Ω Vripple=0.1Vpp Inputs Floating
LC-filter(22uH+1uF) 30kHz-LPF
0
VDD=2.5V
-10
10k
Fig.21
PSRR RL=4Ω Vripple=0.1Vpp Inputs Floating
LC-filter(22uH+1uF) 30kHz-LPF
0
1k
f [Hz]
-30
-40
-30
-40
-50
-50
-60
-60
-70
-70
10
100
1k
f [Hz]
10k
10
100k
100
Fig.22
Po=50mW
Po=250mW
Po=1W
-35
THD+N [%]
VDD=2.5V
VDD=3.6V
VDD=5.0V
CMRR [dB]
100k
THD+N vs Frequency VDD=5.0V RL=4Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
-30
-45
10k
Fig.23
CMRR RL=8Ω Vin=1Vpp
LC-filter(22uH+1uF) 30kHz-LPF
-40
1k
f [Hz]
1
-50
-55
0.1
-60
10
100
1k
freq [Hz]
10k
10
100k
100
Fig.24
1k
freq [Hz]
10k
100k
Fig.25
THD+N vs Frequency VDD=3.6V RL=4Ω
LC-filter(22uH+1uF) 30kHz-LPF
THD+N vs Frequency VDD=2.5V RL=4Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
10
Po=25mW
Po=125mW
Po=500mW
Po=75mW
THD+N [%]
THD+N [%]
1
Po=15mW
Po=200mW
1
0.1
0.1
0.01
10
100
1k
freq [Hz]
10k
10
100k
Fig.26
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100
1k
freq [Hz]
10k
100k
Fig.27
13/16
2010.06 - Rev.A
Technical Note
BD5461GUL
Gain_vs_Frequency RL=4Ω
Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF
Gain vs Frequency RL=8Ω
Vin=0.5Vpp LC-filter(22uH+1uF) 30kHz-LPF
10
10
5
5
gain [dB]
15
gain [dB]
15
0
VDD=2.5V
VDD=3.6V
VDD=5.0V
-5
-10
VDD=2.5V
VDD=3.6V
VDD=5.0V
0
-5
-10
-15
-15
10
100
1k
freq [Hz]
10k
100k
Fig.28
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10
100
1k
freq [Hz]
10k
100k
Fig.29
14/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Notes for use
(1) Numbers and data in entries are representative design values and are not guaranteed values of the items.
(2) Although we are confident recommending the sample application circuit, carefully check their characteristics further when
using them. When modifying externally attached component constants before use, determine them so that They have
sufficient margins by taking into account variations in externally attached components and the Rohm IC,not only for static
characteristics but also including transient characteristics.
(3) Absolute maximum ratings
This IC may be damaged if the absolute maximum ratings for the applied voltage, temperature range, or other
parameters are exceeded. Therefore, avoid using a voltage or temperature that exceeds the absolute maximum ratings.
If it is possible that absolute maximum ratings will be exceeded, use fuses or other physical safety measures and
determine ways to avoid exceeding the IC's absolute maximum ratings.
(4) GND terminal’s potential
Try to set the minimum voltage for GND terminal’s potential, regardless of the operation mode.
(5) Shorting between pins and mounting errors
When mounting the IC chip on a board, be very careful to set the chip's orientation and position precisely.When the
power is turned on, the IC may be damaged if it is not mounted correctly. The IC may also be damaged if a short occurs
(due to a foreign object, etc.) between two pins, between a pin and the power supply, or between a pin and the GND.
(6) Operation in strong magnetic fields
Note with caution that operation faults may occur when this IC operates in a strong magnetic field.
(7) Thermal design
Ensure sufficient margins to the thermal design by taking in to account the allowable power dissipation during actual use
modes, because this IC is power amp. When excessive signal inputs which the heat dissipation is insufficient condition, it
is possible that thermal shutdown circuit is active.
(8) Thermal shutdown 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.
(9) Load of the output terminal
This IC corresponds to dynamic speaker load, and doesn't correspond to the load except for dynamic speakers.
(10) The short protection of the output terminal
The short-circuiting protection of this IC corresponds only to “VDD-short” (the short-circuiting with the power) of the output
terminal and “GND-short” (the short-circuiting with GND) of the output terminal. It doesn't correspond to the
short-circuiting among the output terminals.
Also, when the short-circuiting condition of the output terminal is canceled, it detects the high impedance of the output
terminal and it is equipped with the auto recover without power cycling(the cancellation) function in the short-circuiting
protection. Be careful of the output terminal, because, there is a fear not to return automatically when the short-circuiting
condition occurs in pull-up or the pull-down at equal to or less than about 1MΩ impedance,
(11) Operating ranges
The rated operating power supply voltage range (VDD=+2.5V～+5.5V) and the rated operating temperature range
(Ta=-40℃～+85℃) are the range by which basic circuit functions is operated. Characteristics and rated output power are
not guaranteed in all power supply voltage ranges or temperature ranges.
(12) Electrical characteristics
Electrical characteristics show the typical performance of device and depend on board layout, parts, power supply.
The standard value is in mounting device and parts on surface of ROHM’s board directly.
(13) Power decoupling capacitor
Because the big peak current flows through the power line, the class-D amplifier has an influence on the Audio
characteristic by the capacitance value or the arrangement part of the power decoupling capacitor.
Arrange a power decoupling capacitor as close as possible to the VDD terminal of IC.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
15/16
2010.06 - Rev.A
Technical Note
BD5461GUL
●Ordering part number
B
D
5
Part No.
4
6
1
Part No.
5461
G
U
L
-
E
Package
GUL：VCSP50L1
2
Packaging and forming specification
E2: Embossed tape and reel
VCSP50L1(BD5461GUL)
1.6±0.1
Tape
Embossed carrier tape
Quantity
3000pcs
Direction
of feed
0.55MAX
0.1±0.05
1.6±0.1
1PIN MARK
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
)
(φ0.15)INDEX POST
A
C
B
B
A
1
0.3±0.1
2
P=0.5×2
0.08 S
9-φ0.25±0.05
0.05 A B
0.3±0.1
S
3
1pin
P=0.5×2
(Unit : mm)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
Reel
16/16
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2010.06 - Rev.A
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.001
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