LTC3856 Buck Controller overview

Description

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Category
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LTC3856 is a 1 channel, 12 phase sync Buck Controller. The maximum input voltage ranges from 4.50 V to 38.00 V and output current goes up to 25.00 A.

The Controller features fixed 770 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3856 is available in 2 package option(s): QFN-32 TSSOP-38 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.50 V
V-IN max. 38.00 V
I-OUT? 25.00 A
V-OUT min. 0.60 V
V-OUT max. 5.00 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 770 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. yes
ext.clock Frequency min. 250 kHz
ext.clock Frequency max. 770 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 yes
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-32
SO/SOIC
SOP TSSOP-38
DIP

LTC3856 Datasheet

Link to the most up-to-date LTC3856 datasheet and the product page for EVM, tools and support information.

LTC3856

LTC3856 inventory, samples and price

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Available Distributors with stock: 0

no online Distributor with LTC3856 stock available

Available Distributors with stock: 3

Digi-Key

ProductStockPriceBuy
LTC3856IUH#PBF 161
5003.95 €
2504.04 €
1004.25 €
255.14 €
17.74 €
Buy Now
LTC3856EUH#PBF 97
5003.43 €
2503.51 €
1003.70 €
254.47 €
16.74 €
Buy Now
LTC3856EFE#PBF 46
25003.61 €
5003.75 €
2503.84 €
1004.04 €
254.89 €
17.36 €
Buy Now
DC1580A 2
1131.21 €
Buy Now
LTC3856EUH#TRPBF 0
25003.50 €
Buy Now
LTC3856EFE#TRPBF 0
20003.81 €
Buy Now
LTC3856IUH#TRPBF 0
25004.00 €
Buy Now
LTC3856IFE#TRPBF 0
20004.20 €
Buy Now
LTC3856IFE#PBF 0
1504.45 €
Buy Now
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Mouser Electronics

ProductStockPriceBuy
LTC3856EUH#TRPBF 1203
18.08 $
255.36 $
1004.43 $
2504.21 $
5004.12 $
25003.84 $
Buy Now
LTC3856EFE#PBF 250
18.40 $
255.58 $
1004.61 $
2504.38 $
5004.28 $
10004.12 $
Buy Now
LTC3856EUH#PBF 0
17.69 $
255.10 $
1004.22 $
2504.01 $
5003.92 $
10003.77 $
Buy Now
LTC3856IUH#PBF 0
1464.85 $
2924.61 $
5114.50 $
10224.33 $
Buy Now
LTC3856IFE#PBF 0
1505.07 $
2504.82 $
5004.71 $
10004.53 $
Buy Now
LTC3856EFE#TRPBF 0
20004.18 $
Buy Now
LTC3856IFE#TRPBF 0
20004.60 $
Buy Now
LTC3856IUH#TRPBF 0
25004.39 $
Buy Now
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Quest Components

ProductStockPriceBuy
LTC3856EUH 24
107.58 $
48.34 $
111.37 $
Buy Now

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3856. Or, compare LTC3856 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
25% LTC3834 LTC3834 product overviewLTC3834 product overview Linear Technology DFN-20, TSSOP-20

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3856.

V-IN max. 38 V, I-OUT 25 A, V-OUT min. 0.6 V, Frequency typ. 770 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744302010 0.1 30.0 45.0 0.24 6.95 x 6.8 x 4.7
744303012 0.1 31.0 55.0 0.33 10 x 6.8 x 5
744304010 0.1 26.0 52.0 0.17 11.5 x 11.8 x 4
744307012 0.1 29.0 48.0 0.33 7.4 x 7.2 x 7.2
7443081012 0.1 38.0 85.0 0.29 9.4 x 6.2 x 8.1
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