TPS55289: TPS55289: description of DISCHG in Table 7-10

Peter Kahn

Part Number: TPS55289
Other Parts Discussed in Thread: TPS55285, TPS55287

The description of DISCHG in Table 7-10 of the datasheet is misleading: it talks about shutdown. However, shutdown resets the DISCHG bit to 0, so DISCHG=1 would never take effect. Table 7-10 should mention the OE bit rather than shutdown, just like section 7.3.7.

1 month ago

0 Mulin Yuan 29 days ago

TI__Mastermind 18290 points

Hi Peter,

Thank you for reaching out. I will look into this and give you feedback later.

Regards,

Mulin

0 Mulin Yuan 29 days ago

TI__Mastermind 18290 points

Hi Peter,

Than you for you suggestion! We add this description in TPS5529-Q1 datasheet. We will consider to update the TPS55289 datasheet as well.

Regards

Mulin

+1 Peter Kahn 29 days ago in reply to Mulin Yuan

Prodigy 100 points

As this is the only place in the TPS55289 datasheet where "shutdow mode" means OE=0, it might be better to not mention "shutdown mode" here at all. Everywhere else, "shutdown" (except for "thermal shutdown") means EN/OVLO=low. What do you think about this wording? "VOUT is discharged to ground by an internal 100mA current sink while the OE bit is 0". The 0b case also needs fixing.

The TPS55287 and TPS55285 datasheets have the same problem.

0 Bryce Xun 26 days ago in reply to Peter Kahn

TI__Mastermind 29350 points

Hi Peter,

Thank you very much for the valuable suggestion. We will consider to update the mentioned datasheet as well, sorry to bring the inconvenience.

BRs,

Bryce

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TPS55289: TPS55289: description of DISCHG in Table 7-10