LTC3801B Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LTC3801B is a 1 channel, 1 phase non-sync Buck Controller. The maximum input voltage ranges from 2.50 V to 9.80 V and output current goes up to 5.00 A.

The Controller features fixed 550 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3801B is available in 1 package option(s): SOT-23 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 2.50 V
V-IN max. 9.80 V
I-OUT? 5.00 A
V-OUT min. 0.80 V
V-OUT max. 9.80 V
V-OUT adjustable
V-OUT programmable
sync/non-sync non-sync
Frequency typ. 550 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. no
ext.clock Frequency min.
ext.clock Frequency max.
Softstart
Softstart adjustable
Tracking no
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 single
Nr. of Phases 1
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 1
CSP
SOT SOT-23
MSOP
QFN/DFN
SO/SOIC
SOP
DIP

LTC3801B Datasheet

Link to the most up-to-date LTC3801B datasheet and the product page for EVM, tools and support information.

LTC3801B

LTC3801B inventory, samples and price

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Available Distributors with stock: 2

ARROW-NAC (1)

ProductStockPriceBuy
LTC3801BES6#TRMPBF751
13.02 USD
1002.49 USD
Buy Now

DIGI-KEY (3)

ProductStockPriceBuy
LTC3801BES6#TRMPBF500
5002.49 USD
Buy Now
LTC3801BES6#TRMPBF801
14.87 USD
254.35 USD
1002.99 USD
2502.74 USD
Buy Now
LTC3801BES6#TRMPBF801
14.87 USD
254.35 USD
1002.99 USD
2502.74 USD
Buy Now
LTC3801BES6#TRPBF0
25002.49 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3801B stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3801B. Or, compare LTC3801B side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC1622 LTC1622 product overviewLTC1622 product overview Linear Technology MS-10
0% LTC1772B LTC1772B product overviewLTC1772B product overview Linear Technology SOT-23
0% LTC3772B LTC3772B product overviewLTC3772B product overview Linear Technology SOT-23, DFN-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3801B.

V-IN max. 9.8 V, I-OUT 5 A, V-OUT min. 0.8 V, Frequency typ. 550 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744040630082 0.8 6.0 9.5 10.00 6 x 6 x 2.8
74404063010 1.0 5.2 7.5 10.00 6 x 6 x 2.8
74404064010 1.0 5.1 11.0 11.00 6 x 6 x 4.5
744065001 1.0 8.0 9.5 4.90 10 x 10 x 3.1
7440710082 0.8 7.3 8.0 7.00 8 x 8 x 4.6
744316100 1.0 11.5 11.5 4.75 5.5 x 5.3 x 4.3
744373240068 0.7 5.5 10.0 16.00 4.45 x 4.06 x 2
74437324010 1.0 5.0 9.0 22.00 4.45 x 4.06 x 2
74437336010 1.0 7.5 11.0 13.00 5.7 x 5.2 x 3
744383560068 0.7 8.2 9.4 7.50 4.1 x 4.1 x 2.1
74438356010 1.0 7.2 9.0 12.00 4.1 x 4.1 x 2.1
7447462010 1.0 8.5 8.0 6.00 5.5 x 5.5 x 8.5
744772010 1.0 7.5 10.0 4.70 7.8 x 7.8 x 10
744777001 1.0 6.8 10.2 8.40 7.3 x 7.3 x 4.5
7447779001 1.0 5.3 9.5 10.00 7.3 x 7.3 x 4.5
744778001 1.0 5.4 6.4 9.00 7.3 x 7.3 x 3.4
7447789001 1.0 5.4 6.4 10.00 7.3 x 7.3 x 3.5
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