ROHM BD5461GUL

High Performance Class-D Speaker / Headphone Amplifier Series
2.5W Monaural
Class-D Speaker Amplifier
for Differential Analog Input
No.09075EAT11
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 electronic applications, Note-book PC etc.
●Absolute Maximum Ratings（Ta=25℃）
Item
Power Supply Voltage
Power Dissipation
Storage Temperature Range
STBY Terminal Input Range
IN+, IN- Terminal Input Range
*1
Symbol
VDD
Pd
Tstg
Vstby
Vin
Rating
7.0
690 *1
-55 ～ +150
-0.1～VDD+0.1
-0.1～VDD+0.1
Unit
V
mW
℃
V
V
When mounted on a 50 mm×58mm Rohm standard board, reduce by 5.52 mW/°C above Ta = +25 °C.
●Operating Conditions
Item
Power Supply Voltage
Temperature Range
Symbol
VDD
Topr
Range
+2.5 ～ +5.5
-40 ～ +85
Unit
V
℃
※ This product is not designed for protection against radio active rays
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1/15
2009.07 - 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 ）
Item
Symbol
Circuit current (No signal)
Circuit current (Standby)
Output power 1
Output power 2
Voltage gain
Power Supply Rejection Ratio
Rating
ICC
ISTBY
PO1
PO2
GV
MIN.
―
―
450
550
11.4
TYP.
2.0
0.1
680
850
11.9
MAX.
4.0
2
―
―
12.4
PSRR
45
53
―
Unit
mA
μA
mW
mW
dB
dB
Conditions
Active mode, No load
Standby mode
BTL, f=1kHz, THD+N=1% *1
BTL, f=1kHz, THD+N=10% *1
BTL
BTL, f=1kHz, Vripple=0.1Vpp
*2
Vin=0V, BTL
Output offset voltage
ΔVo
-25
0
+25
mV
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
Standby
input Voltage
Low-level
VSTBYL
0
―
0.4
V
Standby mode
High-level
ISTBYH
6
12
18
μA
VSTBY=3.6V
Standby
input current
Low-level
ISTBYL
-5
0
5
μA
VSTBY=0V
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
0.1μ
IN+
A1
8
Vin
PWM
Vin
0.1μ
INC1
HBridge
OUT+
C3
VSE
V
VSE
VBTL
22μH
1μ
GND A2
V
V
B3 PGND
●Active / Standby Control
STBY Pin（C2pin）
Mode
Active
Standby
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© 2009 ROHM Co., Ltd. All rights reserved.
Pin level
H
L
Conditions
IC active
IC shutdown
2/15
2009.07 - 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
PWM
INC1
GND A2
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HBridge
OUT+
C3
B3 PGND
3/15
Pin No.
Pin Name
A1
IN+
A2
GND
A3
OUT-
B1
VDD
B2
PVDD
B3
PGND
C1
IN-
C2
STBY
C3
OUT+
2009.07 - 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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© 2009 ROHM Co., Ltd. All rights reserved.
4/15
2009.07 - Rev.A
Technical Note
BD5461GUL
●Evaluation board Circuit Diagram
VDD
Please connect to GND line.
C3
Please connect to Power Supply
10μ
(VDD=+2.5～5.5V) line.
VDD B1
U1
B2 PVDD
S1
H：Active
STBY
L：Shutdown
C2
Bias
OSC
300k
Audio
Input+
0.1μ
OUTA3
IN+ Rin=75k
A1
C2
Differential
Input
Audio
Input-
HBridge
PWM
0.1μ
INC1
C1
OUT+
C3
Rin=75k
GND A2
B3 PGND
Please connect to Input Signal line.
Please connect to Speaker.
●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
WLCSP 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
① Input 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.
fc 
1
[Hz]
2 π Ri C 1
In case of Ri=75kΩ, C1 (=C2)=0.1µF, it becomes fc = about 21 Hz.
② Power 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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5/15
2009.07 - Rev.A
Technical Note
BD5461GUL
●Evaluation board PCB layer
TOP Layer silk pattern
TOP Layer
Bottom Layer
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6/15
2009.07 - 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
HBridge
PWM
Audio
Input-
0.1μ
IN-
1μF
Audio
Precision
etc
RL BTL
OUT+
1μF
C3
C1
C1
-
A3
C2
Differential
Input
Measument Instrument
OUT- 22μH
IN+
Ri=75k
A1
Ri=75k
+
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.
fc 
1
2 π LC

1
2 π 22 μH 1μF
 34 kHz
Use a big current type - Inductor L.
（Reference）
TDK ： SLF12575T-220M4R0
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© 2009 ROHM Co., Ltd. All rights reserved.
7/15
2009.07 - 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
2.0
Power Dissipation Pd（W）
measurement conditions ： IC unit and Rohm standard board mount
board size ： 50mm×58mm
1.5
1.0
0.69W
θja =
0.5
0.0
0
25
50
75
85
181.8℃/W
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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© 2009 ROHM Co., Ltd. All rights reserved.
8/15
2009.07 - Rev.A
Technical Note
BD5461GUL
●Typical Characteristics
Table of graphs
Items
Parameter
Efficiency
Supply current
(Icc)
Shutdown current (Istby)
Output power
(Po)
Total harmonic distortion plus noise
(THD+N)
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
vs Frequency
vs Common-mode input voltage
Supply voltage rejection ratio
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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(PSRR)
Figure
9/15
2009.07 - 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 0.9
Po [W]
Fig.4
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
5
6
Fig.9
Output power vs RL THD+N=10%
f=1kHz LC-filter(22uH+1uF) 400Hz-30kHz
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
VDD [V]
Fig.8
2.8
3
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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© 2009 ROHM Co., Ltd. All rights reserved.
Fig.11
10/15
2009.07 - 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%
VDD=2.5V
2.0
RL=4Ω：THD+N=1%
RL=4Ω：THD+N=10%
VDD=5.0V
VDD=3.6V
THD+N [%]
Po [W]
3.0
1.5
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
Po [W]
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
Po=50mW
Po=250mW
Po=1W
THD+N [%]
THD+N [%]
VDD=2.5V
VDD=3.6V
VDD=5.0V
1
1
0.1
0.1
0.01
0.1
Po [W]
1
10
10
100
Fig.14
10
100k
THD+N vs Frequency VDD=2.5V RL=8Ω
LC-filter(22uH+1uF) 30kHz-LPF
10
Po=25mW
Po=125mW
Po=400mW
Po=15mW
Po=75mW
Po=200mW
1
THD+N [%]
THD+N [%]
10k
Fig.15
THD+N vs Frequency VDD=3.6V RL=8Ω
LC-filter(22uH+1uF) 30kHz-LPF
1
1k
freq [Hz]
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
11/15
2009.07 - 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
-20
-20
PSRR [dB]
PSRR [dB]
VDD=3.6V
VDD=5.0V
-30
VDD=2.5V
VDD=3.6V
VDD=5.0V
-40
-50
-30
-40
-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
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]
-20
PSRR [dB]
PSRR [dB]
VDD=5.0V
-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
12/15
2009.07 - 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
13/15
2009.07 - 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.
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© 2009 ROHM Co., Ltd. All rights reserved.
14/15
2009.07 - Rev.A
Technical Note
BD5461GUL
●Ordering part number
B
D
5
Part No.
4
6
1
G
Part No.
5461
U
L
Package
GUL：VCSP50L1
-
E
2
Packaging and forming specification
E2: Embossed tape and reel
VCSP50L1(BD5461GUL)
<Tape and Reel information>
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)
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© 2009 ROHM Co., Ltd. All rights reserved.
Reel
15/15
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2009.07 - Rev.A
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,
fuel-controller 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.
ROHM Customer Support System
http://www.rohm.com/contact/
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© 2009 ROHM Co., Ltd. All rights reserved.
R0039A