LTC3858-2 Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LTC3858-2 is a 2 channel, 2 phase sync Buck Controller. The maximum input voltage ranges from 4.00 V to 38.00 V and output current goes up to 20.00 A.

The Controller features adjustable 900 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3858-2 is available in 1 package option(s): QFN-32 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 2
V-IN min. 4.00 V
V-IN max. 38.00 V
I-OUT? 20.00 A
V-OUT min. 0.80 V
V-OUT max. 24.00 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 900 kHz
Frequency adj. adjustable
Frequency adj. min. 50 kHz
Frequency adj. max. 900 kHz
ext.clock sync. yes
ext.clock Frequency min. 75 kHz
ext.clock Frequency max. 850 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 2
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 1
CSP
SOT
MSOP
QFN/DFN QFN-32
SO/SOIC
SOP
DIP

LTC3858-2 Datasheet

Link to the most up-to-date LTC3858-2 datasheet and the product page for EVM, tools and support information.

LTC3858-2

LTC3858-2 inventory, samples and price

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Available Distributors with stock: 0

no online Distributor with LTC3858 stock available

Available Distributors with stock: 6

Digi-Key

ProductStockPriceBuy
LTC3858EUH#PBF 758
5004.49 €
2504.60 €
1004.84 €
255.85 €
18.82 €
Buy Now
LTC3858IUH#PBF 352
5004.77 €
2504.88 €
1005.13 €
256.21 €
19.35 €
Buy Now
LTC3858EGN-1#PBF 148
5004.36 €
2504.47 €
1004.70 €
255.68 €
18.56 €
Buy Now
DC1510A-B 1
1159.22 €
Buy Now
DC1381A-B 1
25165.58 €
1215.67 €
Buy Now
LTC3858EGN-1#TRPBF 0
25004.42 €
Buy Now
LTC3858EUFD-1#TRPBF 0
25004.57 €
Buy Now
LTC3858EUH#TRPBF 0
25004.57 €
Buy Now
LTC3858EUH-2#TRPBF 0
25004.57 €
Buy Now
LTC3858IGN-1#TRPBF 0
25004.77 €
Buy Now
LTC3858IUFD-1#TRPBF 0
25004.84 €
Buy Now
LTC3858IUH#TRPBF 0
25004.84 €
Buy Now
LTC3858IUH-2#TRPBF 0
25004.84 €
Buy Now
LTC3858EUFD-1#PBF 0
1464.84 €
Buy Now
LTC3858EUH-2#PBF 0
1464.84 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LTC3858EUFD-1#PBF 36
10.69 $
100.69 $
250.69 $
500.69 $
1000.69 $
2500.69 $
5000.69 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LTC3858IUH-2#PBF 62
110.26 $
256.81 $
1005.63 $
2505.35 $
5005.23 $
10005.03 $
Buy Now
LTC3858EGN-1#PBF 47
19.40 $
256.24 $
1005.16 $
2504.90 $
5004.79 $
10004.60 $
Buy Now
LTC3858EUH#PBF 209
19.68 $
256.43 $
1005.31 $
2505.04 $
5004.93 $
10004.74 $
Buy Now

Bristol Electronics

ProductStockPriceBuy
LTC3858EUH#PBF 20 Buy Now

TME Electronic Components

ProductStockPriceBuy
LTC3858EGN-1#PBF 43
498.55 $
109.78 $
310.70 $
111.30 $
Buy Now

Classic Components

ProductStockPriceBuy
LTC3858EUH#PBF 143

Available Distributors without stock: 2

Arrow Electronics

ProductStockPriceBuy
LTC3858IGN-1#PBF 0
1005.08 $
985.97 $
Buy Now
LTC3858IUH-2#TRPBF 0
25005.25 $
Buy Now
LTC3858IUFD-1#PBF 0
1005.15 $
736.06 $
Buy Now
LTC3858EUH#PBF 0
10004.50 $
5004.68 $
2504.79 $
1464.86 $
Buy Now
LTC3858EGN-1#PBF 0
10004.37 $
5004.55 $
2504.66 $
1474.71 $
Buy Now
LTC3858IGN-1#TRPBF 0
25005.18 $
Buy Now
LTC3858EUFD-1#PBF 0
1464.86 $
Buy Now
LTC3858IUFD-1#TRPBF 0
25005.25 $
Buy Now
LTC3858EGN-1#TRPBF 0
25004.81 $
Buy Now
LTC3858IUH-2#PBF 0
10004.78 $
5004.97 $
2505.08 $
1005.15 $
736.47 $
Buy Now
LTC3858EUH-2#PBF 0
1464.86 $
Buy Now
LTC3858EUFD-1#TRPBF 0
25004.96 $
Buy Now
LTC3858IUH#TRPBF 0
25005.25 $
Buy Now
LTC3858IUH#PBF 0
5004.98 $
2505.09 $
1005.15 $
736.48 $
Buy Now
LTC3858EUH-2#TRPBF 0
25004.96 $
Buy Now

Richardson RFPD

ProductStockPriceBuy
LTC3858EUH-2#TRPBF 0
25005.18 $
50004.99 $
Buy Now
LTC3858EUH#PBF 0
1465.39 $
5005.24 $
10005.10 $
50004.91 $
Buy Now
LTC3858IUH-2#PBF 0
736.05 $
1005.71 $
5005.56 $
10005.41 $
50005.20 $
Buy Now
LTC3858IGN-1#TRPBF 0
25005.41 $
50005.20 $
Buy Now
LTC3858IUH-2#TRPBF 0
25005.49 $
50005.28 $
Buy Now
LTC3858EUH-2#PBF 0
1465.39 $
5005.24 $
10005.10 $
50004.91 $
Buy Now
LTC3858EUFD-1#PBF 0
1465.39 $
5005.24 $
10005.10 $
50004.91 $
Buy Now
LTC3858IUFD-1#TRPBF 0
25005.49 $
50005.28 $
Buy Now
LTC3858EUH#TRPBF 0
25005.18 $
50004.99 $
Buy Now
LTC3858IUFD-1#PBF 0
736.05 $
1005.71 $
5005.56 $
10005.41 $
50005.20 $
Buy Now
LTC3858EGN-1#PBF 0
1475.23 $
5005.09 $
10004.96 $
50004.76 $
Buy Now
LTC3858EGN-1#TRPBF 0
25005.02 $
50004.82 $
Buy Now
LTC3858IGN-1#PBF 0
985.96 $
1005.62 $
5005.47 $
10005.32 $
50005.13 $
Buy Now
LTC3858IUH#PBF 0
736.05 $
1005.71 $
5005.56 $
10005.41 $
50005.20 $
Buy Now
LTC3858EUFD-1#TRPBF 0
25005.18 $
50004.99 $
Buy Now

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3858-2. Or, compare LTC3858-2 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC3890 LTC3890 product overviewLTC3890 product overview Linear Technology QFN-32
0% LTC3890-1 LTC3890-1 product overviewLTC3890-1 product overview Linear Technology SSOP-28
0% LTC3890-2 LTC3890-2 product overviewLTC3890-2 product overview Linear Technology QFN-32
0% LTC3890-3 LTC3890-3 product overviewLTC3890-3 product overview Linear Technology SSOP-28
10% LTC3773 LTC3773 product overviewLTC3773 product overview Linear Technology QFN-38, SSOP-36
10% LTC3826 LTC3826 product overviewLTC3826 product overview Linear Technology QFN-32
10% LTC3826-1 LTC3826-1 product overviewLTC3826-1 product overview Linear Technology SSOP-28
25% LTC3802 LTC3802 product overviewLTC3802 product overview Linear Technology QFN-32, SSOP-28

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3858-2.

V-IN max. 38 V, I-OUT 20 A, V-OUT min. 0.8 V, Frequency typ. 900 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
744302015 0.2 30.0 32.0 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
744303015 0.2 31.0 42.0 0.33 10 x 6.8 x 5
744304016 0.2 26.0 32.0 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
744307016 0.2 29.0 41.0 0.33 7.4 x 7.2 x 7.2
744308015 0.2 27.0 58.0 0.37 10.1 x 7 x 7
7443081018 0.2 38.0 60.0 0.29 9.4 x 6.2 x 8.1
744310013 0.1 22.0 48.0 0.91 7 x 6.9 x 3.3
744325016 0.2 25.0 58.0 0.51 10.5 x 10.2 x 5
744355019 0.2 29.0 60.0 0.50 13 x 12.8 x 5
744355215 0.2 25.0 60.0 0.58 10.5 x 10.2 x 4.2
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