BD5424EFS
支援類比輸入/BTL輸出的D類喇叭放大器
BD5424EFS
支援類比輸入/BTL輸出的D類喇叭放大器
BD5424EFS是針對超薄電視等省空間、低發熱量用途而開發的20W+20W立體聲D類功率放大IC。
採用頂尖的BCD (Bipolar, CMOS and DMOS)製程技術，將輸出功率段的導通電阻和接線電阻所產生的內部損失減至極限，實現了91% (10W+10W 輸出、8Ω 負載時)的業界頂級高效率。並採用小型背面散熱型功率封裝，具備低功耗、低發熱量，無需外接散熱器即可實現總體最大40W輸出。
是同時滿足音響類系統大幅小型化、薄型化以及強感染力、高音質播放兩方面需求的產品。
Product Detail
規格:
Grade
Standard
Circuit Type
Class D
Number of Ch
2(Analog)
Speaker Amp Output Power(Max.)[W]
20
Gain [dB]
28
Maximum Output [W,RL=8Ω]
20+20
Minimum Load [Ω]
4
Input Type
Single
Stand-by Current [µA]
12000
Power Supply Voltage (Min.) [V]
10
Power Supply Voltage (Max.) [V]
18
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
功能:
・ A high efficiency of 91% (10W + 10W output with 8Ω load), which is the highest grade in the industry and low heat-generation.・ An output of 20W + 20W (17V, with 8Ω load) is allowed without an external heat radiator.
・ Driving a lowest rating load of 3.6Ω is allowed.
・ Pop noise upon turning power on/off and power interruption has been reduced.
・ High-quality audio muting is implemented by soft-switching technology.
・ An output power limiter function limits excessive output to speakers.
・ High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and GND shorting, against reduced-voltage, and against applying DC voltage to speaker.
8) A master/slave function allowing synchronization of multiple devices reduces beat noises.
9) Adjustment of internal PWM sampling clock frequencies (350kHz to 500kHz) allows easy protective measures against unwanted radio emission to AM radio band.
10) A compact back-surface heat radiation type power package is employed.
HTSSOP-A44 (5mm × 7.5mm × 1.0mm, pitch 0.8mm)
參考設計 / 應用評估套件
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- Evaluation Board - BD5424EFS-EVK-001
BD5424EFS is a 20W + 20W stereo class-D power amplifier IC, developed for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level.
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