LTC3811 Buck Controller overview

Description

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LTC3811 is a 2 channel, 12 phase sync Buck Controller. The maximum input voltage ranges from 4.50 V to 30.00 V and output current goes up to 240.00 A.

The Controller features adjustable 500 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3811 is available in 2 package option(s): QFN-38 SSOP-36 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 2
V-IN min. 4.50 V
V-IN max. 30.00 V
I-OUT? 240.00 A
V-OUT min. 0.60 V
V-OUT max. 3.30 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 500 kHz
Frequency adj. adjustable
Frequency adj. min. 250 kHz
Frequency adj. max. 750 kHz
ext.clock sync. yes
ext.clock Frequency min. 150 kHz
ext.clock Frequency max. 900 kHz
Softstart
Softstart adjustable
Tracking yes
Power Good (PG)
Enable
Operating min.
Operating max.
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ.
Automotive AEC-Q100
Light-Load Mode
Single/ Multiphase multi
Nr. of Phases 12
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 2
CSP
SOT
MSOP
QFN/DFN QFN-38
SO/SOIC
SOP SSOP-36
DIP

LTC3811 Datasheet

Link to the most up-to-date LTC3811 datasheet and the product page for EVM, tools and support information.

LTC3811

LTC3811 inventory, samples and price

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Available Distributors with stock: 2

ARROW-NAC (1)

ProductStockPriceBuy
LTC3811EUHF#PBF79
15.36 USD
1004.41 USD
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DIGI-KEY (2)

ProductStockPriceBuy
LTC3811EUHF#PBF492
17.54 USD
255.36 USD
1004.41 USD
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LTC3811EG#PBF37
17.54 USD
255.36 USD
1004.41 USD
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LTC3811EUHF#TRPBF0
25004.51 USD
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LTC3811EG#TRPBF0
20004.51 USD
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Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LTC3811EUHF#PBF0
17.55 USD
255.12 USD
1004.41 USD
Buy Now
LTC3811EUHF#TRPBF0
17.78 USD
25005.58 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3811 stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3811. Or, compare LTC3811 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
25% LTC3860 LTC3860 product overviewLTC3860 product overview Linear Technology QFN-32

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3811.

V-IN max. 30 V, I-OUT 240 A, V-OUT min. 0.6 V, Frequency typ. 500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
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