Differential Headphone amplifiers require positive and negative voltages. In this reference design, both voltages are generated from a single input voltage with an all integrated split-rail converter. It only requires one inductor and a minimal amount of external components to achieve a high efficiency power supply that keeps the distortion of the system very low. End users benefit from High Fidelity audio performances with longer playback time in their mobile application.
| Output voltage options | PMP9781.1 |
|---|---|
| Vin (Min) (V) | 2.5 |
| Vin (Max) (V) | 5.5 |
| Vout (Nom) (V) | 5 |
| Iout (Max) (A) | .04 |
| Output Power (W) | .2 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Boost- Synchronous^Linear Regulator |
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Detailed schematic diagram for design layout and components
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| Type | Title | Date | ||
|---|---|---|---|---|
| Application note | Small High-Efficiency Split-Rail Supply for Portable Audio Applications | Jun. 02, 2015 |
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