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: 4

Chip One Stop (10)

ProductStockPriceBuy
LT3680EDD#PBF126
18.36 USD
106.65 USD
504.76 USD
1004.63 USD
Buy Now
LT3680EDD#PBF2123
18.11 USD
105.76 USD
255.67 USD
Buy Now
LT3680EMSE#PBF371
18.69 USD
105.45 USD
504.83 USD
1004.70 USD
2004.67 USD
Buy Now
LT3680EMSE#PBF24
18.31 USD
105.89 USD
Buy Now
LT3680HMSE#PBF38
111.70 USD
108.14 USD
Buy Now
LT3680HMSE#PBF237
110.80 USD
59.59 USD
107.76 USD
Buy Now
LT3680IDD#PBF539
19.98 USD
106.90 USD
506.09 USD
1005.78 USD
2005.57 USD
5005.49 USD
Buy Now
LT3680IDD#PBF31
19.73 USD
106.90 USD
256.79 USD
Buy Now
LT3680IMSE#PBF50
110.00 USD
106.94 USD
506.11 USD
Buy Now
LT3680IMSE#PBF241
19.97 USD
107.07 USD
256.96 USD
Buy Now

Digi-Key (10)

ProductStockPriceBuy
LT3680EDD#PBF2577
18.51 USD
256.05 USD
1004.98 USD
Buy Now
LT3680IDD#PBF2679
110.20 USD
257.25 USD
1005.98 USD
Buy Now
LT3680HMSE#PBF267
111.66 USD
257.79 USD
1006.63 USD
Buy Now
LT3680EDD#TRPBF0
25005.08 USD
Buy Now
LT3680EDD#TRPBF1598
19.67 USD
258.64 USD
1006.10 USD
2505.59 USD
Buy Now
LT3680EDD#TRPBF1598
19.67 USD
258.64 USD
1006.10 USD
2505.59 USD
Buy Now
LT3680EMSE#TRPBF0
25005.20 USD
Buy Now
LT3680EMSE#TRPBF997
19.90 USD
258.84 USD
1006.24 USD
2505.72 USD
Buy Now
LT3680EMSE#TRPBF997
19.90 USD
258.84 USD
1006.24 USD
2505.72 USD
Buy Now
LT3680IDD#TRPBF0
25006.08 USD
Buy Now
LT3680IDD#TRPBF2075
111.57 USD
2510.33 USD
1007.30 USD
2506.69 USD
Buy Now
LT3680IDD#TRPBF2075
111.57 USD
2510.33 USD
1007.30 USD
2506.69 USD
Buy Now
DC1149A3
1170.17 USD
25128.14 USD
Buy Now
LT3680EMSE#PBF0
18.71 USD
256.19 USD
1005.10 USD
Buy Now
LT3680IMSE#PBF0
110.46 USD
257.44 USD
1006.12 USD
Buy Now
LT3680IMSE#TRPBF0
25006.22 USD
Buy Now
LT3680HMSE#TRPBF0
25006.73 USD
Buy Now

Newark Electronics (2)

ProductStockPriceBuy
LT3680EDD#PBF8
13.88 USD
253.88 USD
1003.88 USD
Buy Now
LT3680EMSE#PBF7
18.55 USD
256.05 USD
1005.00 USD
Buy Now

RS Components (5)

ProductStockPriceBuy
LT3680EDD#PBF258Buy Now
LT3680EMSE#PBF5Buy Now
LT3680EMSE#PBF30Buy Now
LT3680IDD#PBF120Buy Now
LT3680IMSE#PBF160Buy Now

Available Distributors without stock: 3

Element14 (0)

ProductStockPriceBuy
LT3680EDD#PBF0Buy Now
LT3680EMSE#PBF0Buy Now
LT3680IDD#PBF0Buy Now
LT3680IMSE#PBF0Buy Now

Farnell Element14 UK (0)

ProductStockPriceBuy
LT3680EDD#PBF0Buy Now
LT3680EMSE#PBF0Buy Now
LT3680IDD#PBF0Buy Now
LT3680IMSE#PBF0Buy Now

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 10

Arrow Electronics

ProductStockPriceBuy
LT3680EDD#PBF 2211
1004.88 $
15.93 $
Buy Now
LT3680EMSE#PBF 310
1006.09 $
256.38 $
106.98 $
17.69 $
Buy Now
LT3680HMSE#PBF 137
1006.50 $
17.64 $
Buy Now
LT3680IDD#PBF 17
1005.86 $
17.11 $
Buy Now

Digi-Key

ProductStockPriceBuy
LT3680IDD#PBF 2679
1005.23 €
256.34 €
18.92 €
Buy Now
LT3680EDD#PBF 2577
1004.35 €
255.29 €
17.44 €
Buy Now
LT3680IDD#TRPBF 2075
2505.85 €
1006.38 €
259.03 €
110.12 €
Buy Now
LT3680IDD#TRPBF 2075
2505.85 €
1006.38 €
259.03 €
110.12 €
Buy Now
LT3680EDD#TRPBF 1598
2504.89 €
1005.33 €
257.55 €
18.46 €
Buy Now
LT3680EDD#TRPBF 1598
2504.89 €
1005.33 €
257.55 €
18.46 €
Buy Now
LT3680EMSE#TRPBF 997
2505.00 €
1005.46 €
257.73 €
18.66 €
Buy Now
LT3680EMSE#TRPBF 997
2505.00 €
1005.46 €
257.73 €
18.66 €
Buy Now
LT3680HMSE#PBF 267
1005.80 €
256.81 €
110.20 €
Buy Now
DC1149A 3
25112.04 €
1148.80 €
Buy Now
LT3680EDD#TRPBF 0
25004.44 €
Buy Now
LT3680EMSE#TRPBF 0
25004.55 €
Buy Now
LT3680IDD#TRPBF 0
25005.32 €
Buy Now
LT3680EMSE#PBF 0
1004.46 €
255.41 €
17.62 €
Buy Now
LT3680IMSE#PBF 0
1005.35 €
256.50 €
19.15 €
Buy Now
show stock=0hide stock=0

Verical

ProductStockPriceBuy
LT3680EDD#PBF 2211
15.93 $
Buy Now
LT3680EMSE#PBF 310
16.07 $
Buy Now
LT3680HMSE#PBF 137
1006.50 $
27.64 $
Buy Now
LT3680IDD#PBF 17
27.11 $
Buy Now

Newark element14

ProductStockPriceBuy
LT3680EDD#PBF 8
13.88 $
253.88 $
1003.88 $
Buy Now
LT3680EMSE#PBF 7
18.55 $
256.05 $
1005.00 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3680EDD#PBF 591
18.52 $
107.81 $
256.05 $
1004.98 $
Buy Now
LT3680HMSE#PBF 225
111.68 $
1010.71 $
257.79 $
1006.63 $
Buy Now
LT3680IDD#PBF 451
110.22 $
109.36 $
257.25 $
1005.98 $
Buy Now
LT3680IMSE#PBF 25
110.47 $
109.60 $
257.44 $
1006.12 $
Buy Now
LT3680EMSE#PBF 0
18.73 $
108.00 $
256.19 $
1005.10 $
Buy Now
LT3680EMSE#TRPBF 0
19.91 $
109.20 $
258.84 $
1006.24 $
2505.72 $
25005.20 $
Buy Now
LT3680IDD#TRPBF 0
25006.08 $
Buy Now
LT3680IMSE#TRPBF 0
25006.22 $
Buy Now
LT3680EDD#TRPBF 0
25005.08 $
Buy Now
LT3680HMSE#TRPBF 0
25006.73 $
Buy Now
show stock=0hide stock=0

Bristol Electronics

ProductStockPriceBuy
LT3680IDD#PBF 35 Buy Now
LT3680EMSE#PBF 8 Buy Now

Chip One Exchange

ProductStockPriceBuy
LT3680EDD#TRPBF 31
LT3680EDD#TRPBF 31

Chip1Stop

ProductStockPriceBuy
LT3680IMSE#PBF 50
506.11 $
106.94 $
110.00 $
Buy Now
LT3680HMSE#PBF 38
108.14 $
111.70 $
Buy Now
LT3680HMSE#PBF 237
107.76 $
59.59 $
110.80 $
Buy Now
LT3680IDD#PBF 539
5005.49 $
1005.78 $
19.98 $
Buy Now
LT3680EDD#PBF 126
1004.63 $
504.76 $
18.36 $
Buy Now
LT3680EMSE#PBF 371
2004.67 $
504.83 $
18.69 $
Buy Now
LT3680EMSE#PBF 24
105.89 $
18.31 $
Buy Now
LT3680EDD#PBF 2123
255.67 $
105.76 $
18.11 $
Buy Now
LT3680IDD#PBF 31
256.79 $
106.90 $
19.73 $
Buy Now
LT3680IMSE#PBF 241
256.96 $
107.07 $
19.97 $
Buy Now

New Advantage Corporation

ProductStockPriceBuy
LT3680EDD#PBF 1694
1216.68 $
Buy Now

RS Components

ProductStockPriceBuy
LT3680IMSE#PBF 160
107.01 GBP
256.42 GBP
Buy Now
LT3680IDD#PBF 120
67.37 GBP
306.79 GBP
616.21 GBP
Buy Now
LT3680EDD#PBF 258
65.51 GBP
305.04 GBP
614.58 GBP
Buy Now
LT3680EMSE#PBF 5
17.26 GBP
106.58 GBP
255.91 GBP
Buy Now
LT3680EMSE#PBF 20
106.58 GBP
255.91 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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