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PCM5242: Additional charge pump load

Marcin Kuczma66
Prodigy 10 points

Part Number: PCM5242
Other Parts Discussed in Thread: TPS65135, LM2776

Hi, Can I get few mA of current from Vneg pin PCM5242 to supply 2 operational amplifiers?

  • 0
    TI__Guru 56833 points
    Hi Marcin,

    Unfortunately not. The PCM5242 can just support enough current for the output and its minimum load impedance (5kΩ). I would suggest an external charge pump or SMPS, such as the TPS65135 or LM2776.

    Thanks,
    Paul