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STRUCTURE:
PRODUCT:
Silicon monolithic integrated circuits
Stereo Class-D Power Amplifier For Speaker
TYPE:
BD5431EFS
HTSSOP-A44
PACKAGE:
FEATURES:
1) Differential Analog / PWM inputs
2) High efficiency and low heat generation eliminates external heat-sinks
3) Eliminates pop noise generated when the power supply goes on/off, or when the power supply is
suddenly shut off
4) High quality muting performance is realized by using the soft-switching technology
5) Incorporates a master/slave function that enables synchronous operation when several
units are used simultaneously
6) Allows the internal PWM sampling clock frequency to be adjusted
○Absolute maximum ratings (Ta=25℃)
Item Symbol
Limit
+20
Unit
V
Conditions
Pin7、8、15、16、29、30、37、38、40
※1 ※2
Supply voltage
Vcc
Pd
2.0
4.5
W
W
V
※3
Power dissipation
※4
Input voltage for signal pin
Input voltage for control pin
Input voltage for clock pin
Operating temperature range
Storage temperature range
Maximum junction temperature
VIN
-0.2 ~ +7.2
-0.2 ~ Vcc+0.2
-0.2 ~ +7.2
-40 ~ +85
-55 ~ +150
+150
Pin1、2、3、4 ※1
Pin20、24 ※1
Pin23 ※1
VCONT
VOSC
V
V
Topr
Tstg
Tjmax
℃
℃
℃
※1 The voltage that can be applied, based on GND(Pin11, 12, 33, 34, 43)
※2 Do not, however exceed Pd and Tjmax=150℃.
※3 70mm×70mm×1.6mm, FR4, 1-layer glass epoxy board (Copper on bottom layer 0%)
Derating in done at 16mW/℃ for operating above Ta=25℃. There are thermal vias on the board.
※4 70mm×70mm×1.6mm, FR4, 2-layer glass epoxy board (Copper on bottom layer 100%)
Derating in done at 36mW/℃ for operating above Ta=25℃. There are thermal vias on the board.
○Operating conditions (Ta=25℃)
Item
Symbol
Vcc
Limit
Unit
V
Conditions
Pin7、8、15、16、29、30、37、38、40
※1
Supply voltage
+10 ~ +16.5
4 ~ 16
RL
Load impedance
Ω
※5
※5 Do not, however exceed Pd.
※
No radiation-proof design
REV. B