LMZ12010

Cristian Bandila

Other Parts Discussed in Thread: LMR64010, LMR62014, LMZ12010, LMZ34002, LMZ31710

Hi ,

I want to generate 28V/0.5A , 24V/0.2A , 15V/3.2A , 12V/1A , 8V/2.7A , 5V /7A , 3.3V /9A , -5V/1A . Input voltage is a battery Liion range : 6V-9V .

For output voltages > 5V I think to use one of step-up "simple switcher" like :LMR62014 , LMR64010 ... .

For output voltage 3.3VI think to use LMZ12010 .

I have some problem for 5V/7A because from datasheet of LMZ12010 . I don't have 5V output whit 6V input , only for input over 7V is real ?

I have also some problem with -5V .... LMZ34002 work only up 2A , I need 2.5A at -5V .

Thank you !

over 9 years ago

0 J Arrigo over 9 years ago

TI__Mastermind 28020 points

For 5V & 3.3V outputs, I would recommend LMZ31710.

Unfortunately, LMZ34002 can only deliver up to 2A. Above you mention the -5V is only 1A.

0 Cristian Bandila over 9 years ago in reply to J Arrigo

Prodigy 60 points

But LMZ31710 can generate 5V output with b6V input ? At page 23 , Table 9. is indicated the Vout range (1.4-4.3) from PVin=5V , but from Pvin=6V how much is the maximum Vout ?

0 Anston Lobo over 9 years ago in reply to Cristian Bandila

TI__Genius 16025 points

For the 3.3V output you can use the LMZ12010 since efficiencies are better.
But for the 5V output, I would highly recommend the LMZ31710. The table you are referring to is ONLY for synchronization which is not a feature you seem to be using, so this does not impact you and yes 6V to 5V should be possible.

0 Anston Lobo over 9 years ago in reply to Anston Lobo

TI__Genius 16025 points

Please check out Webench on TI.com to design the circuit for your needs. They also have multiple power architect features in there for various loads.

Power management

Power management forum

LMZ12010