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Hello support team、
I'd like to propose two types of LDOs which start-up fast to our customer.
The required specifications of LDOs are as follows.
[LDO1]
Input voltage: 5.6 V
Output voltage: 3.3 V and 5 V (variable type is acceptable)
Output current: 300 mA
Time from output enable ON to output voltage stabilization: less than 500 μs (at COUT = 1 μF)
[LDO2]
Input voltage: 5.6 V
Output voltage: 3.3 V and 5 V (variable type is acceptable)
Output current: 1 A
Time from output enable ON to output voltage stabilizes: less than 500 μs (at COUT = 1 μF)
I’m trying to propose the following ICs.
[LDO 1] --> TPS735, LP38693
[LDO 2] --> LP38692
Is there any other good product you can suggest?
Sincerely,
M. Tachibana
Hi Tachibana-san,
Those are good recommendations. Another option for the 1A rail could be the TPS737. Here is its startup profile:
Does this answer your question?
Regards,
Hello John-san,
Thank you for your comment.
I checked TPS737.
tSTR (STR Start-up time) of TPS737 is 600 µS (typ), so I think it doesn't meet the customer's requirement.
I think that TLV759P (tSTR = 500 µS (typ)) is just within the allowable.
Sincerely,
M. Tachibana
