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Rohm Semiconductor Electronic Components Datasheet

BD5638NUX Datasheet

Monaural Class-D Speaker Amplifiers

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Small-sized Class-D Speaker Amplifiers
Analog Input
Monaural Class-D Speaker Amplifiers
BD5632NUX,BD5634NUX,BD5638NUX
No.10101EAT04
Description
BD5632NUX, BD5634NUX and BD5638NUX are a low voltage drive class-D speaker amplifier that was developed for
mobile phones, mobile audio products and the others. BD5632NUX has a fixed gain of 6dB, BD5634NUX has a fixed gain
of 12dB, and BD5638NUX has a fixed gain of 18dB. 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) LC Filter less
2) Only 3 external components
3) High power 2.5W/4ohm/BTL (VDD=5V, RL=4ohm, THD+N=10%, typ.)
4) High power 0.85W/8ohm/BTL (VDD=3.6V, RL=8ohm, THD+N=10%, typ.)
5) Analog differential input / PWM digital output
6) Pop noise suppression circuit
7) Standby function (Mute function)
8) Protection circuit
(Short protection [Auto recover without power cycling], Thermal shutdown, under voltage lockout)
9) Ultra small package VSON008X2030 (2.0×3.0×0.6mmMAX)
Applications
Mobile phones, PND (Personal Navigation Device), DSC, PDA, etc
Line up matrix
Production Name
Gain (dB)
Input Impedance (k)
Package
BD5632NUX
6
100
BD5634NUX
12
50
VSON008X2030
BD5638NUX
18
25
Absolute maximum ratings (Ta=25)
Parameter
Symbol
Ratings
Unit
Power Supply Voltage
VDD
7.0
V
Power Dissipation
Pd
0.52 *1
W
Storage Temperature Range
Tstg
-55 ~ +150
STBY Terminal Input Range
Vstby
-0.3 ~ VDD+0.3
V
IN+, IN- Terminal Input Range
Vin
-0.3 ~ VDD+0.3
V
(*1) ROHM standard board mounted (Board size 70mm×70mm×1.6mmt, 1layer), de-rate the value 4.16mW/deg above Ta=+25deg.
Operating conditions
Parameter
Symbol
Power Supply Voltage
VDD
Temperature Range
Topr
*This product is not designed for protection against radioactive rays.
Ratings
+2.5 ~ +5.5
-40 ~ +85
Unit
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/14
2010.06 - Rev.A


Rohm Semiconductor Electronic Components Datasheet

BD5638NUX Datasheet

Monaural Class-D Speaker Amplifiers

No Preview Available !

BD5632NUX, BD5634NUX, BD5638NUX
Technical Note
Electric characteristics
(Unless otherwise specified, Ta=+25deg, VDD=+3.6V, f=1 kHz, RL=8, AC item=LC Filter; L=22µH, C=1µF)
Parameter
Symbol
Limits
MIN. TYP. MAX.
Unit
Conditions
Circuit current (No signal)
ICC 2.7 5.4 mA Active mode, No load
Circuit current (Standby)
Output power1
ISTBY 0.1 2 µA Standby mode
PO1
450 680
mW BTL, f=1kHz, THD+N=1% *1
Output power2
Voltage gain (BD5632NUX)
PO2
550 850
mW BTL, f=1kHz, THD+N=10% *1
5.5 6.0 6.5
Voltage gain (BD5634NUX)
Voltage gain (BD5638NUX)
GV
11.5 12.0 12.5
dB BTL
17.0 18.0 19.0
Switching Frequency
fosc 150 250 350 kHz
Start-up time
Ton 0.36 0.51 0.85 msec
STBY threshold voltage
VSTBY
0.4
1.4
V Active to standby shift
Input impedance (STBY)
RSTBY 210 300 390 kohm
Input impedance (IN+/-)
(BD5632NUX)
70 100 130
Input impedance (IN+/-)
(BD5634NUX)
RIN 35 50 65 kohm
Input impedance (IN+/-)
(BD5638NUX)
17.5 25 32.5
*1:B.W. =20 kHz-LPF, BTL: The voltage between 5 pin and 8 pin
Measurement Circuit Diagram
VSTBY
A
1
STBY
NC 2
0.47µF IN+
3
Vin
Vin 0.47µF IN- 4
Bias
OSC
PWM
H-
Bridge
OUT- 22µH
8
GND
7
10µF
6 VDD
1µF
8Ω
OUT+ 22µH
5
1µF
V VSE
V VBTL
V VSE
A
VDD
Active/Standby Control
STBY Pin (1pin)
Mode
Active
Standby
Pin Level
H
L
Conditions
IC Active
IC Shutdown
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/14
2010.06 - Rev.A


Part Number BD5638NUX
Description Monaural Class-D Speaker Amplifiers
Maker ROHM
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BD5638NUX Datasheet PDF






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