LTC3859AL Buck Controller overview

Description

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Category
Sub-Category

LTC3859AL is a 3 channel, 2 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 adjustable 900 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3859AL is available in 2 package option(s): QFN-38 TSSOP-38 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 3
V-IN min. 4.50 V
V-IN max. 38.00 V
I-OUT? 25.00 A
V-OUT min. 0.80 V
V-OUT max. 60.00 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 2
CSP
SOT
MSOP
QFN/DFN QFN-38
SO/SOIC
SOP TSSOP-38
DIP

LTC3859AL Datasheet

Link to the most up-to-date LTC3859AL datasheet and the product page for EVM, tools and support information.

LTC3859AL

LTC3859AL inventory, samples and price

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Available Distributors with stock: 6

ARROW-NAC (1)

ProductStockPriceBuy
LTC3859ALIFE#PBF50
17.23 USD
1006.14 USD
Buy Now

Chip-One-Stop (1)

ProductStockPriceBuy
LTC3859ALIFE#PBF50
17.15 USD
105.87 USD
Buy Now

DIGI-KEY (8)

ProductStockPriceBuy
LTC3859ALHUHF#PBF262
111.06 USD
257.40 USD
1006.29 USD
Buy Now
LTC3859ALIUHF#PBF89
110.43 USD
256.97 USD
1005.93 USD
Buy Now
LTC3859ALIFE#PBF50
110.80 USD
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LTC3859ALMPUHF#PBF52
118.83 USD
Buy Now
LTC3859ALMPFE#PBF50
123.32 USD
Buy Now
LTC3859ALEUHF#PBF20
19.30 USD
256.22 USD
1005.28 USD
Buy Now
LTC3859ALEFE#PBF12
19.67 USD
256.47 USD
1005.50 USD
Buy Now
LTC3859ALHFE#PBF13
111.43 USD
257.64 USD
1006.50 USD
Buy Now
LTC3859ALEUHF#TRPBF0
25005.38 USD
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LTC3859ALEFE#TRPBF0
20005.60 USD
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LTC3859ALIUHF#TRPBF0
25006.03 USD
Buy Now
LTC3859ALIFE#TRPBF0
20006.24 USD
Buy Now
LTC3859ALHUHF#TRPBF0
25006.39 USD
Buy Now
LTC3859ALHFE#TRPBF0
20006.60 USD
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LTC3859ALMPUHF#TRPBF0
250016.06 USD
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LTC3859ALMPFE#TRPBF0
200016.64 USD
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Element14 (5)

ProductStockPriceBuy
LTC3859ALEFE#PBF83
115.45 USD
2510.34 USD
1008.79 USD
Buy Now
LTC3859ALEUHF#PBF0
114.86 USD
259.94 USD
1008.44 USD
Buy Now
LTC3859ALHFE#PBF40
118.27 USD
2512.21 USD
10010.39 USD
Buy Now
LTC3859ALHUHF#PBF94
117.67 USD
2511.83 USD
10010.05 USD
Buy Now
LTC3859ALIFE#PBF0
117.26 USD
2511.56 USD
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LTC3859ALIUHF#PBF67
116.67 USD
2511.14 USD
1009.48 USD
Buy Now
LTC3859ALMPFE#PBF0
137.26 USD
2531.16 USD
Buy Now
LTC3859ALMPUHF#PBF49
135.96 USD
2530.09 USD
Buy Now

FARNELL-ELEMENT14 (5)

ProductStockPriceBuy
LTC3859ALEFE#PBF83Buy Now
LTC3859ALHFE#PBF40Buy Now
LTC3859ALHUHF#PBF94Buy Now
LTC3859ALIUHF#PBF67Buy Now
LTC3859ALMPUHF#PBF49Buy Now

NEWARK (5)

ProductStockPriceBuy
LTC3859ALEFE#PBF0
15.72 USD
Buy Now
LTC3859ALEUHF#PBF52
15.50 USD
Buy Now
LTC3859ALHFE#PBF0
111.44 USD
257.67 USD
1006.50 USD
Buy Now
LTC3859ALHUHF#PBF0
16.55 USD
Buy Now
LTC3859ALIFE#PBF50
16.39 USD
Buy Now
LTC3859ALIUHF#PBF52
16.17 USD
Buy Now
LTC3859ALMPFE#PBF50
117.25 USD
Buy Now
LTC3859ALMPUHF#PBF52
116.64 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3859AL stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3859AL. Or, compare LTC3859AL side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC3859A LTC3859A product overviewLTC3859A product overview Linear Technology QFN-38, TSSOP-38

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3859AL.

V-IN max. 38 V, I-OUT 25 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
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
744308015 0.2 27.0 58.0 0.37 10.1 x 7 x 7
744355215 0.2 25.0 60.0 0.58 10.5 x 10.2 x 4.2
0Results
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