The APA2020A is a stereo bridge-tied audio power amplifier in various 24-pin power packages , including SOP , TSSOP-P. When connecting to a 5V voltage supply , the APA2020A is capable of delivering 1.8W/1.2W of continuous RMS power per channel into 4/8 loads with less than 1% THD+N , respectively. The APA2020A simplifies design and frees up board space for other features .
The APA2020A also served well in low-voltage applications , which provides 800-mW per channel into 4 loads with a 3.3V supply voltage . Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in the APA2020A , that reduces pops and clicks noise during power up and when using the shutdown or mute modes and protects the
chip from being destroyed by over-temperature failure.
To simplify the audio system design in notebook computer applications , the APA2020A 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 . For power sensitive applications , the APA2020A also features a shutdown function which keeps the supply current only 0.5 A (typ) .
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• Stereo Audio Power Amplifier for Notebook Computer
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• Low Supply Current , IDD= 8mA at Stereo BTL• Low Shutdown Current , IDD= 0.5A• Depop Circuitry Integrated• Low Supply Voltage• Thermal Shutdown Circuitry Integrated• Output Power at 1% THD+N , VDD=5V - 1.8 W/Ch (typ) into a 4 Load - 1.2 W/Ch (typ) into a 8 Load• Bridge-Tied Load (BTL) or Single-Ended (SE) Modes Operation• Various 24-Pin Power Packages Available SOP , TSSOP-P• High Supply Voltage Ripple Rejection
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| Symbol |
Parameter |
Rating |
Unit |
| VCC |
Supply Voltage |
6 |
V |
| TA |
Operating Ambient Temperature Range |
-40 to 85 |
°C |
| TJ |
Maximum Junction Temperature |
150 |
°C |
| TSTG |
Storage Temperature Range |
-65 to +150 |
°C |
| TS |
Soldering Temperature,10 seconds |
300 |
°C |
| VESD |
Electrostatic Discharge |
-3000 to 3000 *1
-200 to 200 *2 |
V |
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Required Field 
