5W, Ultra-low EM, Class AB/D Switching, No Filter Monotone

Channel Audio Power Amplifier

Characteristic

Direct Drive Loudspeaker without Lc Filter Digital Modulation

External gain adjustable

High output power

5W@VDDP=VDDA 50V, RL=20

THD+N=10%

3.5W@VDDP=VDDA=5.0V, RL=4Q

THD+N=10%

Low THD+N

0.1%@ VDDP = VDDA = 5.0V, R\=4Q,

Po=1W

Unique fade-in and fade-out effect, reflecting excellent noise

Sound Suppression Performance

Class AB/Class Switching Function with Optional Switching Mode

Low power sleep mode

Overcurrent protection function and overheat protection function

Undervoltage Abnormal Protection Function

S0P8/eS0P8 with radiator package

application

Portable speaker USB speaker FM plug-in speaker

MP3MP4 expansion slot

Portable Game Machine Digital Photo Frame

Mobile laptop

Small size LcD TV monitor

Summary

SC8871 is an FM-free, class AB, class D optional power amplifier. At 5V operating voltage, the maximum driving power is 5W (2). BIL load THD < 10%, total harmonic distortion noise in audio range is less than 1%; SC8871 application circuit is simple, only a few peripheral devices, integrated feedback resistance; SC8871 output does not need external coupling capacitor or uplift capacitor and buffer network; SC8871 internal integration of two AB class D switching mode, can control SC8871 eSOP8 with radiator package through two pins, especially suitable for small size. In a portable system with low volume and weight, SC8871 can enter dormancy mode by controlling, thus reducing power consumption. SC8871, which has an automatic over-heating and over-current shutdown protection mechanism, works stably with a gain bandwidth product of up to 25MHz and a unit gain stability. The voltage gain of the amplifier can be adjusted by the peripheral resistance of the ration, which is convenient for application.