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| RT5508 Datasheet, PDF (1/57 Pages) Richtek Technology Corporation – Speaker Amplifier with Speaker Protection | |||
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RT5508
Speaker Amplifier with Speaker Protection
General Description
The RT5508 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%/±10ï°C of rated
limit.
Ordering Information
RT5508
Pin 1 Orientation***
(2) : Quadrant 2, Follow EIA-481-D
Package Type
WSC : WL-CSP-29B 2.87x2.07 (BSC)
Note :
***Empty means Pin1 orientation is Quadrant 1
Richtek products are :
ï RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
ï Suitable for use in SnPb or Pb-free soldering
processes.
Features
ï¬ Class-D Speaker AMP
ï 1.6W Output Power @ 5.3V, 8ï Load, THD < 1%
ï 0/3/6/9/12/15dB Boost Gain
ï 20ïV Output Noise @ 0dB Gain
ï¬ Boost Converter
ï Adaptive Boost For Speaker, Boost from
Battery Supply Up to Programmed Voltage,
Max 5.3V
ï Power Modes : Adaptive Boost, Fixed Boost,
Bypass Mode
ï Switching Frequency 2MHz, Maximum Output
Current 1A
ï Support CCM / DCM Compensation, Feedback
ADC
ï Digital Part : Voltage Loop in Boost Mode
ï¬ Digital
ï Digital Audio Interface Support I2S,
Left-Justified, Right-Justified
ï I2S Sampling Rate Support up to 48kHz, 24-bit
ï Digital Filter, Digital Volume, Multi-Band DRC
ï Speaker Protection
ï Speaker Amplitude Estimation Accuracy : Error
< 10%
ï Bl Calibration Function
ï Temperature Sensing
ï Speaker Temperature Estimation Accuracy :
Error < ±10ï°C
Applications
ï¬ Smart Phone
ï¬ Tablet
Simplified Application Circuit
Control
Interface
Audio Interface 1
1.8V
Battery
SDA
SCL
DAI1
LRCK1
BCK1
DATAO
RT5508
VINB
OUTA
OUTB
GND
Copyright © 2017 Richtek Technology Corporation. All rights reserved.
DS5508-01 March 2017
is a registered trademark of Richtek Technology Corporation
www.richtek.com
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