What is the current consumption of the LT8609, Sync tied low, when out of regulation. I am using the device as a voltage limiter, Vin is 11 to 30V, Vout set to 12V. 10uH 3 amp inductor. I am finding it draws around 2mA when Vin is less than 12V

Hello,

I plan to use LT8609 for automotive application.

What is the better package between DFN and MSOP for this usage?

I mean about robustness.

Usually, is the smaller the better?

Best regards,

Martial

Are there any restrictions on the LT8609 relative to Vin?  For example, can EN be set high by logic prior to Vin turning on (ie. Vin is zero or below EN threshold (below ~1.05V) and EN is >3Vdc)

Looking at the LT8609S as a pre-regulator outputing 6.3vdc @ 1.2 Amps.
Working through the datasheet it appears that a 22uH inductor at 400 kHz
is reasonable. I'd like to support an input range from say 9v to 12v
meaning duty cycles greater than 50%…

Hi Analog,

Could you provide me with the right ferrite bead that I could use in this schematic or a way to determine it myself:

www.analog.com/.../LT8609S.pdf

Ultralow EMI 3.3V 2A Step-Down Converter

Looking to drive three LT8609S regulators from a LTC6902 with SSFM.  This appears fairly straight forward ... float DIV and PH (each bypassed with a 1nF capacitor), 10.5K SET for a 630kHz Fmax, 22K MOD for a 9.55% SSFM.  Connect OUT1 to the first LT8609S…

Hello,

I am trying to use the LT8608 as a positive to negative voltage converter as described for example linear technology design note 1021.

The simulation in LTSpice works fine, producing -6V from 15V supply. Necessary output current is less than 1A…

Hi all

i do a simulation with LT8609. but there is some big spike noise about 10Vp-p on Vin, when Cin has 0.6nH of ESL.

and , there is no problem in LT8609A  with same simulation.

is there any Bug in LT8609 spice model?

Best ragards