LT3680 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3680 is a 36.00 V non-sync Buck Converter from with 3.50 A output current. The maximum 36.00 V input voltage can be regulated down into a 0.79 V to 30.00 V output voltage.

It requires are a typical inductor size of 4.70 µH, a typical external component count of 10 and achieves a peak efficiency of 91 %. Further LT3680 characteristics are a adjustable 2450 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3680 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. 36.00 V
I-OUT? 3.50 A
V-OUT min. 0.79 V
V-OUT max. 30.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 2450 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 2450 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK yes
Quiescent current max. 65 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ.
Inductor size typ. 4.70 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 91 %
Component count min. 10
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3680 Datasheet

Link to the most up-to-date LT3680 datasheet and the product page for EVM, tools and support information.

LT3680

LT3680 Sample stock and distributor price breaks

LT3680 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LT3680 stock available

Available Distributors with stock: 9

Arrow Electronics

ProductStockPriceBuy
LT3680EDD#TRPBF 1570
5005.09 $
2505.21 $
1005.48 $
257.10 $
19.98 $
Buy Now
LT3680EDD#PBF 774
10004.67 $
5004.86 $
2504.97 $
1005.24 $
256.33 $
19.53 $
Buy Now
LT3680EMSE#TRPBF 630
25005.12 $
5005.20 $
2505.31 $
1005.60 $
256.76 $
110.19 $
Buy Now
LT3680IMSE#PBF 190
10005.75 $
5005.99 $
2506.12 $
1006.44 $
257.79 $
111.73 $
Buy Now
LT3680IDD#PBF 18
10005.61 $
5005.83 $
2505.97 $
1006.28 $
257.60 $
111.45 $
Buy Now
LT3680EMSE#TRPBF 0
25004.85 $
Buy Now
LT3680EDD#TRPBF 0
25005.09 $
Buy Now
LT3680IDD#TRPBF 0
25006.09 $
Buy Now
LT3680IMSE#TRPBF 0
25006.10 $
Buy Now
LT3680HMSE#TRPBF 0
25006.60 $
Buy Now
LT3680EMSE#PBF 0
2505.24 $
1005.37 $
Buy Now
LT3680EMSE#PBF 0
10004.79 $
5004.98 $
2505.09 $
1005.37 $
256.49 $
19.78 $
Buy Now
LT3680HMSE#PBF 0
10006.02 $
5006.27 $
2506.41 $
1006.50 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3680IDD#PBF 3954
1005.95 €
257.20 €
110.83 €
Buy Now
LT3680EMSE#TRPBF 3912
1005.30 €
256.41 €
19.65 €
Buy Now
LT3680EMSE#TRPBF 3912
1005.30 €
256.41 €
19.65 €
Buy Now
LT3680EMSE#TRPBF 2500
25004.78 €
Buy Now
LT3680EDD#TRPBF 2500
25004.68 €
Buy Now
LT3680EDD#TRPBF 2500
1005.22 €
256.31 €
19.50 €
Buy Now
LT3680EDD#TRPBF 2500
1005.22 €
256.31 €
19.50 €
Buy Now
LT3680EDD#PBF 1538
1004.96 €
256.00 €
19.03 €
Buy Now
LT3680IDD#TRPBF 1513
1006.25 €
257.55 €
111.38 €
Buy Now
LT3680IDD#TRPBF 1513
1006.25 €
257.55 €
111.38 €
Buy Now
LT3680EMSE#PBF 1357
1005.09 €
256.16 €
19.27 €
Buy Now
LT3680IMSE#PBF 892
1006.10 €
257.38 €
111.11 €
Buy Now
LT3680HMSE#PBF 34
2506.16 €
1006.39 €
257.73 €
111.64 €
Buy Now
DC1149A 1
1113.04 €
Buy Now
LT3680IDD#TRPBF 0
25005.60 €
Buy Now
show stock=0hide stock=0

Verical

ProductStockPriceBuy
LT3680EDD#PBF 774
10004.70 $
5004.90 $
2505.00 $
1005.20 $
256.30 $
29.50 $
Buy Now
LT3680IMSE#PBF 190
10005.70 $
5006.00 $
2506.10 $
1006.40 $
257.80 $
211.70 $
Buy Now
LT3680IDD#PBF 18
10005.60 $
5005.80 $
2506.00 $
1006.30 $
257.60 $
211.40 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3680EMSE#PBF 2487
110.29 $
256.83 $
1005.65 $
2505.36 $
5005.24 $
10005.04 $
Buy Now
LT3680EDD#PBF 566
110.03 $
256.66 $
1005.51 $
2505.23 $
5005.11 $
10004.92 $
Buy Now
LT3680IMSE#PBF 754
112.35 $
258.20 $
1006.78 $
2506.44 $
5006.30 $
10006.05 $
Buy Now
LT3680IDD#PBF 855
112.05 $
258.00 $
1006.61 $
2506.28 $
5006.14 $
10005.90 $
Buy Now
LT3680EMSE#TRPBF 1935
110.74 $
257.12 $
1005.89 $
2505.59 $
5005.47 $
25005.10 $
Buy Now
LT3680HMSE#PBF 154
112.94 $
258.59 $
1007.10 $
2506.75 $
5006.60 $
10006.34 $
Buy Now

Bristol Electronics

ProductStockPriceBuy
LT3680EDD#PBF 10 Buy Now
LT3680IDD#PBF 35 Buy Now
LT3680EMSE#PBF 136 Buy Now

Quest Components

ProductStockPriceBuy
LT3680IDD#PBF 91
885.28 $
315.72 $
113.20 $
Buy Now

RS Components

ProductStockPriceBuy
LT3680EDD#PBF 0
14.76 GBP
Buy Now
LT3680IDD#PBF 0
15.87 GBP
3635.72 GBP
Buy Now
LT3680IDD#PBF 291
19.69 GBP
109.20 GBP
256.44 GBP
506.12 GBP
1214.50 GBP
Buy Now
LT3680IDD#PBF 291
109.20 GBP
256.44 GBP
506.12 GBP
1214.50 GBP
Buy Now
LT3680EMSE#PBF 15
18.28 GBP
107.87 GBP
255.49 GBP
Buy Now
LT3680EMSE#PBF 0
107.87 GBP
255.49 GBP
Buy Now
LT3680EDD#PBF 285
17.62 GBP
107.24 GBP
1215.05 GBP
2424.91 GBP
6053.83 GBP
Buy Now
LT3680EDD#PBF 285
107.24 GBP
1215.05 GBP
2424.91 GBP
6053.83 GBP
Buy Now
LT3680EMSE#PBF 0
15.31 GBP
2505.17 GBP
5005.04 GBP
Buy Now
LT3680IMSE#PBF 0
16.38 GBP
2506.21 GBP
5006.06 GBP
Buy Now
LT3680IMSE#PBF 57
108.91 GBP
506.23 GBP
1005.04 GBP
5004.70 GBP
Buy Now
LT3680IMSE#PBF 57
19.38 GBP
108.91 GBP
506.23 GBP
1005.04 GBP
5004.70 GBP
Buy Now
show stock=0hide stock=0

ComS.I.T.

ProductStockPriceBuy
LT3680IDDTRPBF 220

IChunt

ProductStockPriceBuy
LT3680HMSE#PBF 34
1102.87 CNY
2568.33 CNY
10056.50 CNY
25054.48 CNY
Buy Now
LT3680EMSE#TRPBF 5117
185.32 CNY
2556.66 CNY
10046.85 CNY
Buy Now
LT3680IMSE#PBF 982
198.27 CNY
2565.24 CNY
10053.94 CNY
Buy Now
LT3680IDD#PBF 2464
277.54 CNY
2551.48 CNY
10042.53 CNY
25041.49 CNY
Buy Now

Available Distributors without stock: 2

element14 Asia-Pacific

ProductStockPriceBuy
LT3680EDD#PBF 0
5007.82 SGD
2508.00 SGD
1008.43 SGD
2510.18 SGD
115.33 SGD
Buy Now
LT3680EMSE#PBF 0
5008.02 SGD
2508.20 SGD
1008.64 SGD
2510.44 SGD
115.72 SGD
Buy Now
LT3680IDD#PBF 0
5009.38 SGD
2509.61 SGD
10010.11 SGD
2512.23 SGD
118.40 SGD
Buy Now
LT3680IMSE#PBF 0
5009.63 SGD
2509.84 SGD
10010.36 SGD
2512.54 SGD
118.88 SGD
Buy Now

Farnell element14

ProductStockPriceBuy
LT3680EDD#PBF 0
1003.98 GBP
254.58 GBP
16.99 GBP
Buy Now
LT3680EMSE#PBF 0
5004.08 GBP
2504.09 GBP
1004.10 GBP
504.11 GBP
254.12 GBP
106.53 GBP
17.09 GBP
Buy Now
LT3680IDD#PBF 0
2504.78 GBP
1004.79 GBP
504.80 GBP
254.81 GBP
107.64 GBP
18.21 GBP
Buy Now
LT3680IMSE#PBF 0
2504.89 GBP
1005.23 GBP
505.57 GBP
257.10 GBP
107.84 GBP
18.40 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3680. Optional, compare LT3680 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% A8583 A8583 product overviewA8583 product overview Allegro TSSOP-16
0% TPS54541 TPS54541 product overviewTPS54541 product overview Texas Instruments SON-10
0% TPS54361 TPS54361 product overviewTPS54361 product overview Texas Instruments WSON-10
0% TPS54361-Q1 TPS54361-Q1 product overviewTPS54361-Q1 product overview Texas Instruments WSON-10
10% LT3972 LT3972 product overviewLT3972 product overview Linear Technology DFN-10, MSOP-10
10% TPS54362-Q1 TPS54362-Q1 product overviewTPS54362-Q1 product overview Texas Instruments HTSSOP-20
50% A8582 A8582 product overviewA8582 product overview Allegro TSSOP-16
50% A8584 A8584 product overviewA8584 product overview Allegro TSSOP-16
50% LT3480 LT3480 product overviewLT3480 product overview Linear Technology DFN-10, MSOP-10
50% LT3685 LT3685 product overviewLT3685 product overview Linear Technology DFN-10, MSOP-10
50% LT3975 LT3975 product overviewLT3975 product overview Linear Technology MSOP-16
50% LT3980 LT3980 product overviewLT3980 product overview Linear Technology DFN-14, MSOP-16
50% TPS54240 TPS54240 product overviewTPS54240 product overview Texas Instruments SON-10, MSOP-10
50% TPS54240-Q1 TPS54240-Q1 product overviewTPS54240-Q1 product overview Texas Instruments SON-10, MSOP-10
50% TPS54262-Q1 TPS54262-Q1 product overviewTPS54262-Q1 product overview Texas Instruments HTSSOP-20

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3680.

V-IN max. 36 V, I-OUT 3.5 A, V-OUT min. 0.79 V, Frequency typ. 2450 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74402500030 0.3 3.9 5.7 15.00 2.8 x 2.8 x 3
744040420033 0.3 4.5 7.6 13.00 4 x 4 x 1.8
74404300033 0.3 4.0 6.0 8.00 4.8 x 4.8 x 3
74406800024 0.2 4.1 5.8 15.00 8 x 8 x 1.2
74406900022 0.2 5.5 7.5 9.00 8 x 8 x 1.5
744089410022 0.2 4.5 9.5 15.00 4.8 x 4.8 x 2.1
744089420039 0.4 4.2 10.3 15.00 4.8 x 4.8 x 3.1
744089430039 0.4 4.2 9.3 13.50 4.8 x 4.8 x 4.1
744383360033 0.3 5.5 8.3 14.00 3 x 3 x 2
74479276124 0.2 3.6 5.4 19.00 2 x 1.6 x 1
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