RT5509 Datasheet | Richtek

Description The RT5509 is a mono BTL class-D amplifier with cutting-edge speaker protection algorithm. Also, a built-in DC-DC step-up converter is used to provide efficient power for class-D amplifier. I2S interface supports two different audio sources while a pair of auxiliary DATAI/O is used for stereo mode or pass-through application. Chip information including gain, speaker protection output or current sense is able to be monitored via DATAO through proper register setting. Speaker protection provides mechanical / thermal protection with accuracy of 10%/±10C of rated limit. Ordering Information Package Type WSC : WL-CSP-48B 3.04x2.99 (BSC) Note : Richtek products are : - Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. - Suitable for use in Sn Pb or Pb-free soldering processes. Marking Information 0R YM DNN 0R : Product Code YMDNN : Date Code Features - Class-D Speaker AMP - 4.3W Output Power @ 9.5V, 8 Load, THD < 1% - 0/3/6/9/12/15/18d B Boost Gain - 20V Output Noise @ 0d B Gain - Boost Converter - Adaptive Boost for Speaker, Boost from Battery Supply Up to Programmed Voltage, Max 9.5V - Power Modes : Adaptive Boost, Fixed Boost, Bypass Mode - Switching Frequency 2MHz, Maximum Output Current 1.5A - Support CCM / DCM pensation, Feedback AD - Digital Part : Voltage Loop in Boost Mode - Digital - Digital Audio Interface Support I2S, Left-Justified, Right-Justified - I2S Sampling Rate Support Up to 48k Hz, 24-bit - Digital Filter, Digital Volume, DRC/Noise Gate - Speaker Protection - Speaker Amplitude Estimation Accuracy : Error < 10% - Bl Calibration Function - Temperature Sensing - Speaker Temperature Estimation Accuracy : Error < ±10C Applications - Smart Phone - Tablet Simplified Application Circuit 1.8V VBAT DVDD VBAT Control Interface SDA SCL DAI1 LRCK1 BCK1 DATAO LX RT5509...