BD5471MUV Datasheet, PDF (1/22 Pages) Rohm – 2.3W+2.3W Class-D Speaker Amplifier for Differential Analog input

High Performance Class-D Speaker / Headphone Amplifier Series
2.3W+2.3W
Class-D Speaker Amplifier
for Differential Analog input
BD5471MUV
No.09075EAT10
●Description
BD5471MUV is a low voltage drive class-D stereo speaker amplifier that was developed for note-book PC, cellular phone,
mobile audio products and the others.
LC filters of speaker outputs are unnecessary, and only 7 external components are needed for speaker system.
Also, 3.3V regulator in BD5471MUV can use power supply for audio-codec.
BD5471MUV, that is high-efficiency, low consumption, is suitable for application by using battery.
Shutdown current is 0µA typically. Also, start-up time is fast from shutdown to active mode.
BD5471MUV can use for some applications that change mode between “shutdown state” and “active state”.
●Features
1) High power 2.3W typ. (VDD=5V, RL=4Ω, THD+N=10%, stereo input)
High power 1.5W typ. (VDD=5V, RL=8Ω, THD+N=10%, stereo input)
2) Gain selectable by the external control (6, 12, 18, 24dB)
3) Pop noise suppression circuitry
4) Standby function (Mute function) [I_SD=0uA]
5) Protection circuitry (Short protection [Audio, REG], Thermal shutdown, Under voltage lockout)
6) Built-in 3.3V regulator
7) Built-in BEEP detect circuitry
8) Very small package VQFN024V4040
●Applications
Notebook computers，Mobile electronic applications，Mobile phones，PDA etc.
●Absolute Maximum Ratings（Ta=+25℃）
Item
Symbol
Rating
Unit
Power Supply Voltage
VDD
7.0
V
Power Dissipation
Pd
0.7 *1
W
2.2 *2
W
Storage Temperature Range
Tstg
-55 ～ +150
℃
Input Voltage Range *3
Vin
-0.3～VDD+0.3
V
Control Terminal
Input Voltage Range *4
Vctl
-0.3～VDD+0.3
V
*1 74.2mm×74.2mm×1.6mm, FR4 1-layer glass epoxy board(Copper on top layer 0%)
Derating in done at 5.6mW/℃ for operating above Ta=25℃. There are thermal via on the board
*2 74.2mm×74.2mm×1.6mm, FR4 4-layer glass epoxy board (Copper on bottom 2 and 3 layer 100%)
*3 input Terminal (INL+, INL-, INR+, INR-)
*4 Control Terminal (MUTE, G0, G1, EAPD, BEEP, REG_SD)
●Operating Conditions
Item
Power Supply Voltage
Temperature Range
Symbol
Range
Unit
VDD
+4.5 ～ +5.5
V
Topr
-40 ～ +85
℃
* These products aren’t designed for protection against radioactive rays.
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2009.07 - Rev.A