LTC3851A-1 Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LTC3851A-1 is a 1 channel, 1 phase sync Buck Controller. The maximum input voltage ranges from 4.00 V to 38.00 V and output current goes up to 25.00 A.

The Controller features fixed 750 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3851A-1 is available in 1 package option(s): MS-16 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.00 V
V-IN max. 38.00 V
I-OUT? 25.00 A
V-OUT min. 0.80 V
V-OUT max. 5.50 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 750 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. yes
ext.clock Frequency min. 250 kHz
ext.clock Frequency max. 750 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 single
Nr. of Phases 1
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 1
CSP
SOT
MSOP MS-16
QFN/DFN
SO/SOIC
SOP
DIP

LTC3851A-1 Datasheet

Link to the most up-to-date LTC3851A-1 datasheet and the product page for EVM, tools and support information.

LTC3851A-1

LTC3851A-1 inventory, samples and price

OEMSecrets.com
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Available Distributors with stock: 4

Chip One Stop (4)

ProductStockPriceBuy
LTC3851AEGN#PBF172
13.69 USD
103.10 USD
502.43 USD
1002.23 USD
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LTC3851AEMSE#PBF595
13.62 USD
103.05 USD
502.47 USD
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LTC3851AIMSE-1#PBF7
15.12 USD
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LTC3851AIUD-1#PBF17
14.13 USD
103.49 USD
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Digi-Key (12)

ProductStockPriceBuy
LTC3851AEMSE-1#PBF524
13.72 USD
252.49 USD
1002.12 USD
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LTC3851AEMSE#PBF1721
13.72 USD
252.49 USD
1002.12 USD
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LTC3851AEGN#PBF739
13.72 USD
252.49 USD
1002.12 USD
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LTC3851AEUD-1#PBF255
13.72 USD
252.49 USD
1002.12 USD
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LTC3851AEUD#PBF173
13.72 USD
252.49 USD
1002.12 USD
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LTC3851AIMSE#PBF212
14.23 USD
252.83 USD
1002.41 USD
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LTC3851AEMSE#TRPBF2500
25002.54 USD
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LTC3851AEMSE#TRPBF2500
14.31 USD
253.84 USD
1002.67 USD
2502.45 USD
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LTC3851AEMSE#TRPBF2500
14.31 USD
253.84 USD
1002.67 USD
2502.45 USD
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DC1432A-A4
1102.00 USD
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DC1432A-B2
1102.00 USD
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LTC3851AIUD-1#PBF0
14.23 USD
252.83 USD
1002.41 USD
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LTC3851AHMSE#PBF7
14.87 USD
253.26 USD
1002.77 USD
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LTC3851AEGN#TRPBF0
25002.54 USD
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LTC3851AEMSE-1#TRPBF0
25002.54 USD
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LTC3851AEUD#TRPBF0
25002.54 USD
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LTC3851AEUD-1#TRPBF0
25002.54 USD
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LTC3851AIGN#PBF0
4002.83 USD
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LTC3851AIUD#PBF0
3632.83 USD
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LTC3851AIMSE-1#PBF0
3332.83 USD
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LTC3851AIGN#TRPBF0
25002.88 USD
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LTC3851AIMSE-1#TRPBF0
25002.88 USD
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LTC3851AIMSE#TRPBF0
25002.88 USD
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LTC3851AIUD-1#TRPBF0
25002.88 USD
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LTC3851AIUD#TRPBF0
25002.88 USD
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Mouser Electronics (8)

ProductStockPriceBuy
LTC3851AEMSE-1#PBF540
13.74 USD
103.42 USD
252.50 USD
1002.13 USD
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LTC3851AIMSE-1#PBF310
14.25 USD
103.90 USD
252.85 USD
1002.41 USD
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LTC3851AHMSE#PBF279
14.90 USD
104.49 USD
253.28 USD
1002.78 USD
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LTC3851AMPMSE-1#PBF82
111.62 USD
1010.64 USD
257.75 USD
1006.59 USD
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LTC3851AEUD#PBF183
13.74 USD
103.42 USD
252.50 USD
1002.13 USD
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LTC3851AEMSE#PBF161
13.74 USD
103.42 USD
252.50 USD
1002.13 USD
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LTC3851AEGN#PBF300
13.74 USD
103.42 USD
252.50 USD
1002.13 USD
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LTC3851AIMSE#PBF6
14.25 USD
103.90 USD
252.85 USD
1002.41 USD
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LTC3851AIUD-1#PBF0
14.25 USD
103.90 USD
252.85 USD
1002.41 USD
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LTC3851AEUD-1#PBF0
13.74 USD
103.42 USD
252.50 USD
1002.13 USD
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LTC3851AIUD#PBF0
14.25 USD
103.90 USD
252.85 USD
1002.41 USD
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LTC3851AMPMSE#PBF0
111.62 USD
1010.64 USD
257.75 USD
1006.59 USD
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LTC3851AIGN#PBF0
14.25 USD
103.90 USD
252.85 USD
1002.41 USD
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LTC3851AHMSE-1#PBF0
14.90 USD
104.49 USD
253.28 USD
1002.78 USD
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LTC3851AEUD#TRPBF0
25002.23 USD
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LTC3851AEMSE#TRPBF0
25002.23 USD
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LTC3851AIUD#TRPBF0
25002.52 USD
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LTC3851AEMSE-1#TRPBF0
25002.23 USD
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LTC3851AEGN#TRPBF0
25002.23 USD
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LTC3851AEUD-1#TRPBF0
25002.23 USD
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LTC3851AIUD-1#TRPBF0
25002.52 USD
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LTC3851AIMSE-1#TRPBF0
25002.52 USD
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LTC3851AIMSE#TRPBF0
25002.52 USD
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LTC3851AIGN#TRPBF0
25002.52 USD
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LTC3851AHMSE#TRPBF0
25002.90 USD
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LTC3851AHMSE-1#TRPBF0
25002.90 USD
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LTC3851AMPMSE-1#TRPBF0
25006.69 USD
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LTC3851AMPMSE#TRPBF0
25006.69 USD
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RS Components (1)

ProductStockPriceBuy
LTC3851AEMSE#PBF88Buy Now

Available Distributors without stock: 1

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 7

Arrow Electronics

ProductStockPriceBuy
LTC3851AIUD#TRPBF 2225
1002.46 $
Buy Now
LTC3851AEMSE#PBF 375
1002.08 $
12.44 $
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LTC3851AEGN#PBF 172
1002.08 $
12.44 $
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Digi-Key

ProductStockPriceBuy
LTC3851AEMSE#TRPBF 2500
25002.23 €
Buy Now
LTC3851AEMSE#TRPBF 2500
2502.14 €
1002.34 €
253.37 €
13.78 €
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LTC3851AEMSE#TRPBF 2500
2502.14 €
1002.34 €
253.37 €
13.78 €
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LTC3851AEMSE#PBF 1721
1001.86 €
252.18 €
13.26 €
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LTC3851AEGN#PBF 739
1001.86 €
252.18 €
13.26 €
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LTC3851AEMSE-1#PBF 524
1001.86 €
252.18 €
13.26 €
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LTC3851AEUD-1#PBF 255
1001.86 €
252.18 €
13.26 €
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LTC3851AIMSE#PBF 212
1002.11 €
252.48 €
13.71 €
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LTC3851AEUD#PBF 173
1001.86 €
252.18 €
13.26 €
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LTC3851AHMSE#PBF 7
1002.43 €
252.86 €
14.27 €
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DC1432A-A 4
189.42 €
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DC1432A-B 2
189.42 €
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LTC3851AIUD-1#PBF 0
1002.11 €
252.48 €
13.71 €
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LTC3851AEGN#TRPBF 0
25002.23 €
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LTC3851AEMSE-1#TRPBF 0
25002.23 €
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show stock=0hide stock=0

Verical

ProductStockPriceBuy
LTC3851AEMSE#PBF 333
3332.08 $
Buy Now
LTC3851AEGN#PBF 172
1722.08 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LTC3851AEMSE-1#PBF 540
13.72 $
103.41 $
252.49 $
1002.12 $
Buy Now
LTC3851AIMSE-1#PBF 310
14.24 $
103.88 $
252.83 $
1002.41 $
Buy Now
LTC3851AHMSE#PBF 279
14.88 $
104.47 $
253.26 $
1002.77 $
Buy Now
LTC3851AMPMSE-1#PBF 82
111.55 $
1010.59 $
257.71 $
1006.55 $
Buy Now
LTC3851AEUD#PBF 183
13.72 $
103.41 $
252.49 $
1002.12 $
Buy Now
LTC3851AEMSE#PBF 161
13.72 $
103.41 $
252.49 $
1002.12 $
Buy Now
LTC3851AEGN#PBF 300
13.72 $
103.41 $
252.49 $
1002.12 $
Buy Now
LTC3851AIMSE#PBF 6
14.24 $
103.88 $
252.83 $
1002.41 $
Buy Now
LTC3851AIUD-1#PBF 0
14.24 $
103.88 $
252.83 $
1002.41 $
Buy Now
LTC3851AEUD-1#PBF 0
13.72 $
103.41 $
252.49 $
1002.12 $
Buy Now
LTC3851AIUD#PBF 0
14.24 $
103.88 $
252.83 $
1002.41 $
Buy Now
LTC3851AMPMSE#PBF 0
111.55 $
1010.59 $
257.71 $
1006.55 $
Buy Now
LTC3851AIGN#PBF 0
14.24 $
103.88 $
252.83 $
1002.41 $
Buy Now
LTC3851AHMSE-1#PBF 0
14.88 $
104.47 $
253.26 $
1002.77 $
Buy Now
LTC3851AEUD#TRPBF 0
25002.22 $
Buy Now
show stock=0hide stock=0

Chip One Exchange

ProductStockPriceBuy
LTC3851AIUD#TRPBF 8

Chip1Stop

ProductStockPriceBuy
LTC3851AEMSE#PBF 595
502.47 $
103.05 $
13.62 $
Buy Now
LTC3851AEGN#PBF 172
1002.23 $
502.43 $
103.10 $
13.69 $
Buy Now
LTC3851AIMSE-1#PBF 7
15.12 $
Buy Now
LTC3851AIUD-1#PBF 17
103.49 $
14.13 $
Buy Now

RS Components

ProductStockPriceBuy
LTC3851AEMSE#PBF 88
182.70 GBP
Buy Now

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3851A-1. Or, compare LTC3851A-1 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
10% LTC3834-1 LTC3834-1 product overviewLTC3834-1 product overview Linear Technology DFN-16, SSOP-16
25% LTC3835 LTC3835 product overviewLTC3835 product overview Linear Technology QFN-20, TSSOP-20
25% LTC3835-1 LTC3835-1 product overviewLTC3835-1 product overview Linear Technology DFN-16, SSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3851A-1.

V-IN max. 38 V, I-OUT 25 A, V-OUT min. 0.8 V, Frequency typ. 750 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
744304010 0.1 26.0 52.0 0.17 11.5 x 11.8 x 4
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
744325016 0.2 25.0 58.0 0.51 10.5 x 10.2 x 5
744355215 0.2 25.0 60.0 0.58 10.5 x 10.2 x 4.2
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