LT3686A Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3686A is a 37.00 V non-sync Buck Converter from with 1.20 A output current. The maximum 37.00 V input voltage can be regulated down into a 0.80 V to 20.00 V output voltage.

It requires are a typical inductor size of 6.80 µH, a typical external component count of 9 and achieves a peak efficiency of 88 %. Further LT3686A characteristics are a adjustable 2500 kHz switching frequency and 1 available package option(s): DFN-10 .

For the LT3686A replacement search, please select a main parameter tolerance value and adjust the checkboxes for feature match. The product counter within the button shows the number of available equivalents and a click on the replacement button shows all possible replacements within a parametric overview.

ParameterValueReplacement
Search Filter
V-IN min. 3.60 V
V-IN max. 37.00 V
I-OUT? 1.20 A
V-OUT min. 0.80 V
V-OUT max. 20.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 2500 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 300 kHz
Frequency adj./ ext.clock max 2500 kHz
Softstart yes
Softstart adjustable yes
Tracking yes
PG/Power OK no
Quiescent current max. 1300 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ.
Inductor size typ. 6.80 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 88 %
Component count min. 9
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3686A Datasheet

Link to the most up-to-date LT3686A datasheet and the product page for EVM, tools and support information.

LT3686A

LT3686A Sample stock and distributor price breaks

LT3686A prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LT3686A stock available

Available Distributors with stock: 5

Arrow Electronics

ProductStockPriceBuy
LT3686AIDD#PBF 195
10003.13 $
5003.25 $
2503.33 $
1003.38 $
254.24 $
16.38 $
Buy Now
LT3686AEMSE#PBF 26
1003.29 $
253.97 $
15.99 $
Buy Now
LT3686AEDD#PBF 4
1003.04 $
253.83 $
15.77 $
Buy Now
LT3686AEMSE#PBF 0
2223.16 $
Buy Now
LT3686AHMSE#PBF 0
1853.81 $
Buy Now
LT3686AEDD#TRPBF 0
25003.14 $
Buy Now
LT3686AIDD#TRPBF 0
25003.48 $
Buy Now
LT3686AIMSE#PBF 0
1853.51 $
Buy Now
LT3686AHMSE#TRPBF 0
25003.91 $
Buy Now
LT3686AEMSE#TRPBF 0
25003.26 $
Buy Now
LT3686AIMSE#TRPBF 0
25003.61 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3686AIDD#PBF 732
1003.27 €
253.95 €
15.95 €
Buy Now
LT3686AEMSE#PBF 296
1003.06 €
253.70 €
15.58 €
Buy Now
LT3686AEDD#PBF 21
1002.94 €
253.56 €
15.35 €
Buy Now
LT3686AEDD#TRPBF 0
25002.81 €
Buy Now
LT3686AEMSE#TRPBF 0
25002.93 €
Buy Now
LT3686AIDD#TRPBF 0
25003.12 €
Buy Now
LT3686AIMSE#TRPBF 0
25003.24 €
Buy Now
LT3686AIMSE#PBF 0
1853.42 €
Buy Now
LT3686AHMSE#TRPBF 0
25003.51 €
Buy Now
LT3686AHMSE#PBF 0
1853.71 €
Buy Now
show stock=0hide stock=0

Verical

ProductStockPriceBuy
LT3686AIDD#PBF 195
10003.13 $
5003.25 $
2503.33 $
1003.38 $
254.24 $
26.38 $
Buy Now
LT3686AEMSE#PBF 26
1003.29 $
253.97 $
25.99 $
Buy Now
LT3686AEDD#PBF 4
1003.04 $
253.83 $
35.77 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3686AIDD#PBF 1064
16.72 $
254.46 $
1003.69 $
2503.50 $
5003.42 $
10003.29 $
Buy Now

Rochester Electronics

ProductStockPriceBuy
LT3686AIMSE#PBF 296
10003.62 $
5003.81 $
1003.97 $
254.14 $
14.45 $
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3686A. Optional, compare LT3686A side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% TPS54140A TPS54140A product overviewTPS54140A product overview Texas Instruments SON-10, MSOP-10
10% TPS54162-Q1 TPS54162-Q1 product overviewTPS54162-Q1 product overview Texas Instruments HTSSOP-20
10% TPS54262-Q1 TPS54262-Q1 product overviewTPS54262-Q1 product overview Texas Instruments HTSSOP-20
10% TPS57160-Q1 TPS57160-Q1 product overviewTPS57160-Q1 product overview Texas Instruments SON-10, MSOP-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3686A.

V-IN max. 37 V, I-OUT 1.2 A, V-OUT min. 0.8 V, Frequency typ. 2500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74402800082 0.8 2.0 1.6 53.00 2.8 x 2.8 x 1.2
744028001 1.0 1.8 1.5 65.00 2.8 x 2.8 x 1.2
74402900082 0.8 2.4 1.8 36.00 2.8 x 2.8 x 1.5
744029001 1.0 2.2 1.6 45.00 2.8 x 2.8 x 1.5
7440300068 0.7 1.3 1.5 0.06 3.3 x 3.5 x 1.05
744031010 1.0 2.0 1.6 26.00 3.8 x 3.8 x 1.8
74404024010 1.0 2.2 2.6 37.00 2.5 x 2 x 1.2
74404032010 1.0 2.2 3.0 33.00 3 x 3 x 1.5
744042001 1.0 2.7 2.6 20.00 4.8 x 4.8 x 2
74438321010 1.0 1.3 2.5 163.00 2.5 x 2 x 0.6
74479262210 1.0 1.2 1.7 170.00 1.6 x 0.8 x 0.8
74479275210 1.0 1.8 2.1 69.00 2 x 1.25 x 1
74479276210 1.0 2.0 2.5 65.00 2 x 1.6 x 1
74479876168 0.7 1.8 1.7 60.00 2 x 1.6 x 1
74479876210 1.0 1.5 1.5 70.00 2 x 1.6 x 1
74479889210 1.0 2.0 2.0 85.00 2.5 x 2 x 1.2
74479899210 1.0 2.3 2.5 50.00 3.2 x 2.6 x 1.2
74479976210 1.0 1.8 2.4 75.00 2 x 1.6 x 0.5
74479977182 0.8 2.0 2.0 90.00 2 x 1.6 x 0.9
78438321010 1.0 1.3 2.5 163.00 2.5 x 2 x 0.6
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