TS4621B is a high-performance class-G stereo headphone driver with an integrated high-efficiency step-down DC/DC converter. It achieves a total 2.1 mA current consumption at 100 µW output power (10 dB crest factor). THD+N is 0.02 % maximum at 1 kHz and PSRR is 100 dB at 217 Hz.
The TS4621B is a dedicated class-G stereo headphone driver designed for high audio performance and power efficiency in space-constrained applications such as cellular phones and MP3 players. It features an internal high-efficiency step-down DC/DC converter that generates the appropriate voltage based on signal amplitude, achieving low current consumption.
| Power supply range | 2.3 V to 4.8 V |
|---|---|
| Quiescent current | 0.6 mA/channel |
| Total current consumption (10 dB crest factor) | 2.1 mA |
| THD+N typical | 0.006% at 1 kHz |
| PSRR typical | 100 dB at 217 Hz |
| SNR A-weighted | 100 dB at G = 0 dB |
The device operates with a power supply voltage ranging from 2.3 V to 4.8 V.
No, the design allows for output-coupling capacitors to be removed.
The maximum junction temperature rating is 150 °C.