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: 7

ARROW-NAC (3)

ProductStockPriceBuy
LT3680HMSE#PBF321
17.64 USD
1006.50 USD
Buy Now
LT3680EDD#PBF1402
15.93 USD
1004.88 USD
Buy Now
LT3680IDD#PBF1230
17.11 USD
1005.86 USD
Buy Now

Chip-One-Stop (9)

ProductStockPriceBuy
LT3680EDD#PBF116
17.12 USD
105.02 USD
504.85 USD
1004.76 USD
Buy Now
LT3680EDD#PBF1295
19.02 USD
57.71 USD
107.53 USD
507.10 USD
1006.69 USD
2006.54 USD
Buy Now
LT3680EMSE#PBF281
17.68 USD
1004.84 USD
2004.78 USD
Buy Now
LT3680EMSE#PBF5124
19.99 USD
58.54 USD
108.34 USD
507.86 USD
1007.41 USD
2007.24 USD
Buy Now
LT3680EMSE#TRPBF2539
17.51 USD
105.93 USD
255.66 USD
505.18 USD
1004.79 USD
2004.60 USD
Buy Now
LT3680HMSE#PBF10
110.20 USD
Buy Now
LT3680HMSE#PBF70
111.60 USD
59.82 USD
109.70 USD
259.26 USD
509.04 USD
Buy Now
LT3680IDD#PBF605
110.80 USD
59.14 USD
109.03 USD
258.62 USD
508.41 USD
1007.98 USD
Buy Now
LT3680IMSE#PBF405
111.80 USD
59.96 USD
109.85 USD
259.40 USD
509.17 USD
1008.70 USD
Buy Now

DIGI-KEY (4)

ProductStockPriceBuy
LT3680EDD#PBF997
18.34 USD
255.93 USD
1004.88 USD
Buy Now
LT3680EMSE#PBF783
18.54 USD
256.07 USD
1005.00 USD
Buy Now
LT3680IDD#PBF1705
110.00 USD
257.11 USD
1005.86 USD
Buy Now
LT3680IMSE#PBF386
110.25 USD
257.29 USD
1006.00 USD
Buy Now
LT3680EMSE#TRPBF0
25005.10 USD
Buy Now
LT3680EMSE#TRPBF0
19.71 USD
258.67 USD
1006.12 USD
2505.61 USD
Buy Now
LT3680EMSE#TRPBF0
19.71 USD
258.67 USD
1006.12 USD
2505.61 USD
Buy Now
LT3680HMSE#PBF0
111.43 USD
257.64 USD
1006.50 USD
Buy Now
LT3680EDD#TRPBF0
25004.98 USD
Buy Now
LT3680IDD#TRPBF0
25005.96 USD
Buy Now
LT3680IMSE#TRPBF0
25006.10 USD
Buy Now
LT3680HMSE#TRPBF0
25006.60 USD
Buy Now

Element14 (4)

ProductStockPriceBuy
LT3680EDD#PBF105
113.23 USD
259.41 USD
1007.75 USD
Buy Now
LT3680EMSE#PBF328
113.55 USD
259.63 USD
1007.94 USD
Buy Now
LT3680IDD#PBF184
115.87 USD
2511.28 USD
1009.30 USD
Buy Now
LT3680IMSE#PBF39
116.27 USD
2511.57 USD
1009.52 USD
Buy Now

FARNELL-ELEMENT14 (4)

ProductStockPriceBuy
LT3680EDD#PBF105Buy Now
LT3680EMSE#PBF524Buy Now
LT3680IDD#PBF209Buy Now
LT3680IMSE#PBF86Buy Now

NEWARK (4)

ProductStockPriceBuy
LT3680EDD#PBF18
18.35 USD
255.91 USD
1004.88 USD
Buy Now
LT3680EDD#TRPBF0
18.60 USD
25006.17 USD
Buy Now
LT3680EMSE#PBF181
18.55 USD
256.05 USD
1005.00 USD
Buy Now
LT3680EMSE#TRPBF0
18.81 USD
25006.32 USD
Buy Now
LT3680HMSE#PBF0
111.44 USD
257.67 USD
1006.50 USD
Buy Now
LT3680IDD#PBF96
110.02 USD
257.09 USD
1005.86 USD
Buy Now
LT3680IDD#TRPBF0
110.31 USD
25007.40 USD
Buy Now
LT3680IMSE#PBF10
110.26 USD
257.26 USD
1006.00 USD
Buy Now
LT3680IMSE#TRPBF0
110.57 USD
25007.59 USD
Buy Now

RS-COMPONENTS (8)

ProductStockPriceBuy
LT3680EDD#PBF66Buy Now
LT3680EDD#PBF121Buy Now
LT3680EMSE#PBF25Buy Now
LT3680EMSE#PBF68Buy Now
LT3680EMSE#PBF50Buy Now
LT3680IDD#PBF137Buy Now
LT3680IMSE#PBF172Buy Now
LT3680IMSE#PBF150Buy Now

Available Distributors with stock: 0

no online Distributor with LT3680 stock available

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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