The APA4835 is a monolithic integrated circuit , which provides DC volume control , and a stereo bridged audio power amplifiers capable of producing 2.8W (2.2W) into 3 with less than 10% (1.0%) THD+N. APA4835 includes a DC volume control , stereo bridge-tied and single-ended audio power amplifiers , stereo docking outputs , and a selectable gain control , that makes it optimally fittable for notebook PC , multimedia monitors , and other portable applications. The attenuator range of the volume control in APA4835 is from 0dB (DC_Vol=0.7VDD) to 105dB (DC_Vol=0V) with 32 steps. Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in APA4835 , that reduces pops and clicks noise during power up or shutdown mode operation , and protects the chip from being destroyed by over temperature failure. To simplify the audio system design , APA4835 combines a stereo bridge-tied loads (BTL) mode for speaker drive and a stereo single-end (SE) mode for headphone drive into a single chip , where both modes are easily switched by the SE/BTL input control pin signal. Besides the low supply current design to increase the efficiency of the amplifiers , APA4835 also features a shutdown function which keeps the supply current only 0.7A (typ).
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• Notebook and Desktop Computers• Multimedia Monitors• Portable Applications
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• Operating Voltage : 3.3V to 5V• Stereo switchable bridged/single-ended power amplifiers• DC Volume Control Interface , 0dB to 105dB• Low Supply Current , IDD = 13mA at Stereo BTL• Low Shutdown Current , IDD = 0.7A• Bridge-Tied Load (BTL) or Single-Ended-(SE) Modes Operation• Output Power at 1% THD+N , VDD=5V 2.2W/Ch (typ) into a 3 Load 2.0W/Ch (typ) into a 4 Load 1.2W/Ch (typ) into a 8 Load• Output Power at 10% THD+N , VDD=5V 2.8W/Ch (typ) into a 3 Load 2.3W/Ch (typ) into a 4 Load 1.5W/Ch (typ) into a 8 Load• Single-ended mode at 1.0% THD+N 95mW/Ch (typ) into 32 Load• Depop Circuitry Integrated• System Beep Detect• Thermal shutdown protection circuitry• High supply voltage ripple rejection• Low Crossover Distortion• PC99 Compliant• 28-pin TSSOP-P (with enhanced thermal pad) power package available
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| Symbol |
Parameter |
Rating |
Unit |
| VDD |
Supply Voltage Range |
6 |
V |
| TA |
Operating Ambient Temperature range |
-40 to 85 |
°C |
| TJ |
Maximum Junction Temperature |
Internally limited*1 |
°C |
| TSTG |
Storage Temperature Range |
-65 to +150 |
°C |
| TS |
Soldering Temperature , 10 seconds |
260 |
°C |
| VESD |
Electrostatic Discharge |
-2000 to 2000*2 |
V |
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Required Field 
