LM1877: TCA0372 replacement

Julian Chen

Expert 2550 points

Part Number: LM1877
Other Parts Discussed in Thread: TPA3111D1, TPA3137D2

Dear all,

Could we use LM1877 to replacement the TCA0372 or not?

If not, could you suggest more suitable IC to us?

The circuit as below,

Thanks!

over 7 years ago

0 José Luis over 7 years ago

TI__Mastermind 20085 points

Hi Julian Chen,

This device could be replaced by the LM1877.

Best Regards
José Luis Figueroa
Audio Applications Engineer

0 Shawn Zheng over 7 years ago

TI__Mastermind 24835 points

Hi Julian,

As Jose mentioned, this looks feasible. But you need to know that this is a very old device, so the support for it will be limited. Please recommed our customers to use our class-d device(e.g. TPA3137D2, TPA3111D1).

Best reaards,

Shawn Zheng

0 Julian Chen over 7 years ago in reply to José Luis

Expert 2550 points

Dear José Luis Figueroa,

Thanks for your reply.

Could you let me know the description of bias pin?

In this case, should I use bias pin?

Thanks!

0 José Luis over 7 years ago in reply to Julian Chen

TI__Mastermind 20085 points

Julian,

The bias pin should be connected to a capacitor of 50uF and it should be tied to GND according to with the datasheet.
I think that this capacitor is like a bypass capacitor. The bypass capacitors handle starting-up time of the device and reduce noise produced by the power supply.
Unfortunately, as Shawn mentioned is a very old device and the support for this device will be limited.

Best Regards
José Luis Figueroa
Audio Applications Engineer

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LM1877: TCA0372 replacement