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: 5

Chip One Stop (9)

ProductStockPriceBuy
LT3680EDD#PBF231
19.13 USD
108.32 USD
505.85 USD
1005.06 USD
Buy Now
LT3680EDD#PBF444
15.93 USD
1005.55 USD
Buy Now
LT3680EMSE#PBF788
19.04 USD
108.69 USD
508.60 USD
1007.89 USD
2007.83 USD
Buy Now
LT3680EMSE#PBF8146
16.07 USD
1005.68 USD
Buy Now
LT3680EMSE#TRPBF871
1005.72 USD
Buy Now
LT3680HMSE#PBF52
16.65 USD
Buy Now
LT3680HMSE#PBF49
17.88 USD
Buy Now
LT3680IDD#PBF2
17.11 USD
Buy Now
LT3680IMSE#PBF328
17.29 USD
1006.82 USD
Buy Now

Digi-Key (8)

ProductStockPriceBuy
LT3680EMSE#TRPBF2500
25005.20 USD
Buy Now
LT3680EMSE#TRPBF3433
19.90 USD
258.84 USD
1006.24 USD
2505.72 USD
Buy Now
LT3680EMSE#TRPBF3433
19.90 USD
258.84 USD
1006.24 USD
2505.72 USD
Buy Now
LT3680EDD#PBF388
18.51 USD
256.05 USD
1004.98 USD
Buy Now
LT3680EMSE#PBF1004
18.71 USD
256.19 USD
1005.10 USD
Buy Now
LT3680IDD#PBF731
110.20 USD
257.25 USD
1005.98 USD
Buy Now
LT3680IMSE#PBF522
110.46 USD
257.44 USD
1006.12 USD
Buy Now
LT3680HMSE#PBF278
111.66 USD
257.79 USD
1006.63 USD
Buy Now
LT3680EDD#TRPBF0
25005.08 USD
Buy Now
LT3680IDD#TRPBF0
25006.08 USD
Buy Now
LT3680IMSE#TRPBF0
25006.22 USD
Buy Now
LT3680HMSE#TRPBF0
25006.73 USD
Buy Now

Farnell Element14 (2)

ProductStockPriceBuy
LT3680EDD#PBF0Buy Now
LT3680EMSE#PBF0Buy Now
LT3680IDD#PBF2Buy Now
LT3680IMSE#PBF15Buy Now

Newark Electronics (4)

ProductStockPriceBuy
LT3680EDD#PBF18
18.35 USD
255.91 USD
1004.88 USD
Buy Now
LT3680EMSE#PBF49
18.55 USD
256.05 USD
1005.00 USD
Buy Now
LT3680IDD#PBF15
18.52 USD
256.03 USD
1004.99 USD
Buy Now
LT3680IMSE#PBF3
15.46 USD
255.46 USD
1005.46 USD
Buy Now

RS Components (5)

ProductStockPriceBuy
LT3680EDD#PBF237Buy Now
LT3680EMSE#PBF24Buy Now
LT3680EMSE#PBF57Buy Now
LT3680IDD#PBF228Buy Now
LT3680IMSE#PBF252Buy Now

Available Distributors with stock: 10

Arrow Electronics

ProductStockPriceBuy
LT3680EMSE#PBF 7871
16.07 $
1005.00 $
Buy Now
LT3680EMSE#TRPBF 871
1005.10 $
Buy Now
LT3680IMSE#PBF 664
17.29 $
1006.00 $
Buy Now
LT3680EDD#PBF 444
15.93 $
1004.88 $
Buy Now
LT3680HMSE#PBF 49
17.64 $
1006.50 $
Buy Now
LT3680IDD#PBF 2
17.11 $
1005.86 $
Buy Now
LT3680EMSE#TRPBF 0
1005.10 $
Buy Now
LT3680EMSE#TRPBF 0
1005.10 $
Buy Now
LT3680IMSE#PBF 0
17.29 $
1006.00 $
Buy Now
LT3680IDD#PBF 0
17.11 $
1005.86 $
Buy Now
LT3680EDD#PBF 0
15.93 $
1004.88 $
Buy Now
LT3680EMSE#PBF 0
16.07 $
1005.00 $
Buy Now
LT3680EMSE#PBF 0
16.07 $
1005.00 $
Buy Now
LT3680IMSE#TRPBF 0
1006.10 $
Buy Now
LT3680EDD#TRPBF 0
1004.98 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3680EMSE#TRPBF 3433
2504.64 €
1005.06 €
257.16 €
18.02 €
Buy Now
LT3680EMSE#TRPBF 3433
2504.64 €
1005.06 €
257.16 €
18.02 €
Buy Now
LT3680EMSE#TRPBF 2500
25004.21 €
Buy Now
LT3680EMSE#PBF 1004
1004.13 €
255.02 €
17.06 €
Buy Now
LT3680IDD#PBF 731
1004.84 €
255.88 €
18.26 €
Buy Now
LT3680IMSE#PBF 522
1004.96 €
256.02 €
18.47 €
Buy Now
LT3680EDD#PBF 388
1004.03 €
254.90 €
16.89 €
Buy Now
LT3680HMSE#PBF 278
1005.37 €
256.31 €
19.45 €
Buy Now
LT3680EDD#TRPBF 0
25004.12 €
Buy Now
LT3680IDD#TRPBF 0
25004.93 €
Buy Now
LT3680IMSE#TRPBF 0
25005.04 €
Buy Now
LT3680HMSE#TRPBF 0
25005.45 €
Buy Now
show stock=0hide stock=0

Newark element14

ProductStockPriceBuy
LT3680IDD#PBF 15
18.52 $
256.03 $
1004.99 $
Buy Now
LT3680IMSE#PBF 3
15.46 $
255.46 $
1005.46 $
Buy Now
LT3680EDD#PBF 18
18.35 $
255.91 $
1004.88 $
Buy Now
LT3680EMSE#PBF 49
18.55 $
256.05 $
1005.00 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3680IDD#PBF 168
110.22 $
109.36 $
257.25 $
1005.98 $
Buy Now
LT3680HMSE#PBF 150
111.68 $
1010.71 $
257.79 $
1006.63 $
Buy Now
LT3680EDD#PBF 134
18.52 $
107.81 $
256.05 $
1004.98 $
Buy Now
LT3680IMSE#PBF 110
110.47 $
109.60 $
257.44 $
1006.12 $
Buy Now
LT3680EMSE#PBF 21
18.73 $
108.00 $
256.19 $
1005.10 $
Buy Now
LT3680EMSE#TRPBF 0
19.91 $
109.20 $
258.84 $
1006.24 $
2505.72 $
Buy Now
LT3680EDD#TRPBF 0
25005.08 $
Buy Now
LT3680IMSE#TRPBF 0
25006.22 $
Buy Now
LT3680IDD#TRPBF 0
25006.08 $
Buy Now
LT3680HMSE#TRPBF 0
25006.73 $
Buy Now
show stock=0hide stock=0

Bristol Electronics

ProductStockPriceBuy
LT3680IDD#PBF 35 Buy Now

ComS.I.T.

ProductStockPriceBuy
LT3680IDDPBF 134

Chip One Exchange

ProductStockPriceBuy
LT3680EDD#TRPBF 31
LT3680EDD#TRPBF 31

Chip1Stop

ProductStockPriceBuy
LT3680IDD#PBF 2
17.11 $
Buy Now
LT3680HMSE#PBF 52
16.65 $
Buy Now
LT3680EDD#PBF 444
1005.69 $
15.93 $
Buy Now
LT3680EDD#PBF 231
1004.97 $
505.85 $
18.97 $
Buy Now
LT3680EMSE#PBF 7871
1005.82 $
16.07 $
Buy Now
LT3680EMSE#PBF 788
2007.83 $
508.60 $
19.06 $
Buy Now
LT3680EMSE#TRPBF 871
1005.86 $
Buy Now
LT3680HMSE#PBF 49
17.97 $
Buy Now
LT3680IMSE#PBF 664
1006.99 $
17.29 $
Buy Now

New Advantage Corporation

ProductStockPriceBuy
LT3680EDD#PBF 242
1215.92 $
2425.58 $
Buy Now

RS Components

ProductStockPriceBuy
LT3680IDD#PBF 228
107.18 GBP
256.43 GBP
506.04 GBP
755.96 GBP
Buy Now
LT3680IMSE#PBF 202
107.26 GBP
256.60 GBP
Buy Now
LT3680EDD#PBF 237
104.21 GBP
Buy Now
LT3680EMSE#PBF 57
106.30 GBP
255.69 GBP
Buy Now
LT3680EMSE#PBF 24
16.91 GBP
106.30 GBP
255.69 GBP
Buy Now

Available Distributors without stock: 1

Farnell element14

ProductStockPriceBuy
LT3680EMSE#PBF 0
17.09 GBP
106.53 GBP
254.12 GBP
504.11 GBP
1004.10 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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