LTC3646-1 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LTC3646-1 is a 40.00 V sync Buck Converter from with 1.00 A output current. The maximum 40.00 V input voltage can be regulated down into a 0.60 V to 15.00 V output voltage.

It requires are a typical inductor size of 3.30 µH, a typical external component count of 7 and achieves a peak efficiency of 95 %. Further LTC3646-1 characteristics are a adjustable 2250 kHz switching frequency and 2 available package option(s): MSOP-16 DFN-14 .

For the LTC3646-1 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. 4.00 V
V-IN max. 40.00 V
I-OUT? 1.00 A
V-OUT min. 0.60 V
V-OUT max. 15.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2250 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 3000 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 875 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ. 175 °C
Inductor size typ. 3.30 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 7
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-16
QFN/DFN DFN-14
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3646-1 Datasheet

Link to the most up-to-date LTC3646-1 datasheet and the product page for EVM, tools and support information.

LTC3646-1

LTC3646-1 Sample stock and distributor price breaks

LTC3646-1 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LTC3646 stock available

Available Distributors with stock: 10

Arrow Electronics

ProductStockPriceBuy
LTC3646IDE#PBF 887
10003.53 $
5003.68 $
2503.75 $
1003.81 $
254.79 $
17.21 $
Buy Now
LTC3646EDE-1#PBF 102
2503.52 $
1003.59 $
254.35 $
16.56 $
Buy Now
LTC3646EDE#PBF 94
10003.21 $
5003.34 $
2503.42 $
1003.46 $
254.35 $
16.56 $
Buy Now
LTC3646HMSE#PBF 27
1004.28 $
255.18 $
17.80 $
Buy Now
LTC3646EMSE#PBF 10
10003.21 $
5003.34 $
2503.42 $
1853.46 $
Buy Now
LTC3646IDE-1#PBF 9
10003.53 $
5003.68 $
2503.75 $
1003.81 $
254.79 $
17.21 $
Buy Now
LTC3646IDE#PBF 0
2503.87 $
1823.95 $
Buy Now
LTC3646HMSE#PBF 0
1484.12 $
Buy Now
LTC3646EDE#PBF 0
2503.52 $
1823.59 $
Buy Now
LTC3646EDE-1#PBF 0
10003.21 $
5003.34 $
2503.42 $
1823.46 $
Buy Now
LTC3646EMSE#PBF 0
2503.52 $
1853.59 $
Buy Now
LTC3646EMSE-1#PBF 0
1853.46 $
Buy Now
LTC3646EDE#TRPBF 0
25003.56 $
Buy Now
LTC3646IMSE-1#TRPBF 0
25003.91 $
Buy Now
LTC3646HMSE#TRPBF 0
25004.22 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LTC3646IDE#PBF 3709
1003.68 €
254.45 €
16.70 €
Buy Now
LTC3646HDE#PBF 982
1003.98 €
254.82 €
17.26 €
Buy Now
LTC3646EDE#PBF 525
1003.34 €
254.04 €
16.09 €
Buy Now
LTC3646EMSE#PBF 451
1003.34 €
254.04 €
16.09 €
Buy Now
LTC3646IMSE#PBF 242
1003.68 €
254.45 €
16.70 €
Buy Now
LTC3646HDE-1#PBF 181
1003.98 €
254.82 €
17.26 €
Buy Now
LTC3646IMSE-1#PBF 176
1003.68 €
254.45 €
16.70 €
Buy Now
LTC3646HMSE-1#PBF 174
1003.98 €
254.82 €
17.26 €
Buy Now
LTC3646IDE-1#PBF 124
1003.68 €
254.45 €
16.70 €
Buy Now
LTC3646EMSE-1#PBF 106
1003.34 €
254.04 €
16.09 €
Buy Now
LTC3646HMSE#PBF 40
1003.98 €
254.82 €
17.26 €
Buy Now
DC1820A-A 3
1133.41 €
Buy Now
DC1731A-A 3
1133.41 €
Buy Now
DC1731A-B 3
1133.41 €
Buy Now
LTC3646EDE-1#PBF 0
1003.34 €
254.04 €
16.09 €
Buy Now
show stock=0hide stock=0

Verical

ProductStockPriceBuy
LTC3646IDE-1#PBF 1335
10003.89 $
5004.00 $
2504.11 $
1004.22 $
504.34 $
254.47 $
34.61 $
Buy Now
LTC3646IDE#PBF 887
10003.53 $
5003.68 $
2503.75 $
1003.81 $
254.79 $
27.21 $
Buy Now
LTC3646EDE-1#PBF 102
2503.52 $
1003.59 $
254.35 $
26.56 $
Buy Now
LTC3646EDE#PBF 94
10003.21 $
5003.34 $
2503.42 $
1003.46 $
254.35 $
26.56 $
Buy Now
LTC3646IDE#PBF 90
504.34 $
254.47 $
34.61 $
Buy Now
LTC3646HMSE#PBF 27
1004.28 $
255.18 $
27.80 $
Buy Now
LTC3646EMSE-1#PBF 24
254.07 $
34.19 $
Buy Now
LTC3646IDE-1#PBF 9
10003.53 $
5003.68 $
2503.75 $
1003.81 $
254.79 $
27.21 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LTC3646IDE#PBF 1241
17.59 $
255.04 $
1004.16 $
2503.95 $
5003.87 $
10003.72 $
Buy Now
LTC3646EDE#PBF 647
16.90 $
254.58 $
1003.78 $
2503.60 $
5003.51 $
10003.38 $
Buy Now
LTC3646IDE-1#PBF 105
17.59 $
255.04 $
1004.16 $
2503.95 $
5003.87 $
10003.72 $
Buy Now
LTC3646EMSE#PBF 220
16.90 $
254.58 $
1003.78 $
2503.60 $
5003.51 $
10003.38 $
Buy Now
LTC3646EDE-1#PBF 281
16.90 $
254.58 $
1003.78 $
2503.60 $
5003.51 $
10003.38 $
Buy Now
LTC3646HDE#PBF 155
18.20 $
255.44 $
1004.50 $
2504.27 $
5004.18 $
10004.02 $
Buy Now
LTC3646HDE-1#PBF 201
18.20 $
255.44 $
1004.50 $
2504.27 $
5004.18 $
10004.02 $
Buy Now

Bristol Electronics

ProductStockPriceBuy
LTC3646EDE#PBF 41

Quest Components

ProductStockPriceBuy
LTC3646EDE#PBF 1
25.20 $
17.80 $
Buy Now
LTC3646IDE-1#PBF 1
28.19 $
19.83 $
Buy Now

Transfer Multisort Elektronik

ProductStockPriceBuy
LTC3646IMSE#PBF 77
373.54 $
103.94 $
34.46 $
14.96 $
Buy Now

Chip1Stop

ProductStockPriceBuy
LTC3646IDE-1#PBF 16
103.66 $
13.68 $
Buy Now

element14 Asia-Pacific

ProductStockPriceBuy
LTC3646HDE-1#PBF 865
25006.15 SGD
5006.40 SGD
2506.54 SGD
1006.88 SGD
258.32 SGD
112.53 SGD
Buy Now
LTC3646IDE-1#PBF 0
5005.92 SGD
2506.05 SGD
1006.38 SGD
257.70 SGD
111.60 SGD
Buy Now
show stock=0hide stock=0

Farnell element14

ProductStockPriceBuy
LTC3646EDE-1#PBF 0
5002.70 GBP
2502.96 GBP
1003.22 GBP
503.49 GBP
253.75 GBP
104.01 GBP
14.43 GBP
Buy Now
LTC3646EMSE-1#PBF 0
1002.82 GBP
253.18 GBP
15.24 GBP
Buy Now
LTC3646HDE-1#PBF 865
5003.01 GBP
2503.11 GBP
1003.20 GBP
503.30 GBP
253.39 GBP
104.25 GBP
15.11 GBP
Buy Now
LTC3646IDE#PBF 0
5002.98 GBP
2503.09 GBP
1003.21 GBP
503.32 GBP
253.43 GBP
104.73 GBP
15.16 GBP
Buy Now
LTC3646IMSE#PBF 0
1003.11 GBP
253.47 GBP
15.67 GBP
Buy Now
LTC3646IMSE-1#PBF 0
1003.11 GBP
253.47 GBP
15.67 GBP
Buy Now
LTC3646HMSE-1#PBF 0
5002.95 GBP
2502.96 GBP
1002.97 GBP
503.22 GBP
253.48 GBP
105.19 GBP
15.70 GBP
Buy Now
LTC3646HDE#PBF 0
252.56 GBP
13.02 GBP
Buy Now
LTC3646HMSE#PBF 0
5003.01 GBP
2503.13 GBP
1003.25 GBP
503.36 GBP
253.48 GBP
105.19 GBP
15.70 GBP
Buy Now
LTC3646EMSE#PBF 0
1002.82 GBP
253.18 GBP
15.24 GBP
Buy Now
LTC3646EDE#PBF 0
1002.82 GBP
253.18 GBP
15.24 GBP
Buy Now
LTC3646IDE-1#PBF 0
252.26 GBP
102.31 GBP
12.77 GBP
Buy Now
show stock=0hide stock=0

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3646-1. Optional, compare LTC3646-1 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
10% ADP2442 ADP2442 product overviewADP2442 product overview Analog Devices LFCSP-12

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3646-1.

V-IN max. 40 V, I-OUT 1 A, V-OUT min. 0.6 V, Frequency typ. 2250 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025001 1.2 2.6 3.0 36.00 2.8 x 2.8 x 3
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
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
7440430012 1.2 3.1 2.8 15.00 4.8 x 4.8 x 3
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
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
0Results
Module
Fresh Search
Replacement Search with
0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
add to Compare
Feedback
ajax-loader.gif
Loading. Please wait.