LT3689-5.0 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3689-5.0 is a 36.00 V non-sync Buck Converter from with 0.70 A output current. The maximum 36.00 V input voltage can be regulated down into a 5.00 V to 5.00 V output voltage.

It requires are a typical inductor size of 12.00 µH, a typical external component count of 9 and achieves a peak efficiency of 95 %. Further LT3689-5.0 characteristics are a adjustable 2000 kHz switching frequency and 2 available package option(s): MSOP-16 QFN-16 .

For the LT3689-5.0 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. 3.40 V
V-IN max. 36.00 V
I-OUT? 0.70 A
V-OUT min. 5.00 V
V-OUT max. 5.00 V
V-OUT 5.000 V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 2000 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 350 kHz
Frequency adj./ ext.clock max 2200 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 95 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ.
Inductor size typ. 12.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 9
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-16
QFN/DFN QFN-16
SO/SOIC
SOP
DIP
TO
DDPAK

LT3689-5.0 Datasheet

Link to the most up-to-date LT3689-5.0 datasheet and the product page for EVM, tools and support information.

LT3689-5.0

LT3689-5.0 Sample stock and distributor price breaks

LT3689-5.0 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 4

ARROW-NAC (2)

ProductStockPriceBuy
LT3689HMSE#PBF194
15.51 USD
1004.69 USD
Buy Now
LT3689EMSE-5#PBF240
14.64 USD
1003.95 USD
Buy Now

Chip-One-Stop (2)

ProductStockPriceBuy
LT3689EMSE-5#PBF270
17.08 USD
105.96 USD
255.89 USD
505.62 USD
1005.49 USD
2005.23 USD
Buy Now
LT3689HMSE#PBF194
18.39 USD
57.16 USD
107.00 USD
506.59 USD
1006.22 USD
Buy Now

DIGI-KEY (2)

ProductStockPriceBuy
LT3689EMSE-5#PBF136
16.93 USD
254.64 USD
1003.95 USD
Buy Now
LT3689HMSE#PBF60
18.24 USD
255.51 USD
1004.69 USD
Buy Now
LT3689EUD#PBF0
2423.89 USD
Buy Now
LT3689EUD-5#PBF0
2423.89 USD
Buy Now
LT3689EMSE#PBF0
3703.95 USD
Buy Now
LT3689EUD#TRPBF0
25003.99 USD
Buy Now
LT3689EUD-5#TRPBF0
25003.99 USD
Buy Now
LT3689EMSE#TRPBF0
25004.05 USD
Buy Now
LT3689EMSE-5#TRPBF0
25004.05 USD
Buy Now
LT3689IUD#PBF0
2424.32 USD
Buy Now
LT3689IUD-5#PBF0
2424.32 USD
Buy Now
LT3689IMSE#PBF0
1854.38 USD
Buy Now
LT3689IMSE-5#PBF0
1854.38 USD
Buy Now
LT3689IUD#TRPBF0
25004.42 USD
Buy Now
LT3689IUD-5#TRPBF0
25004.42 USD
Buy Now
LT3689IMSE#TRPBF0
25004.48 USD
Buy Now
LT3689IMSE-5#TRPBF0
25004.48 USD
Buy Now
LT3689HMSE-5#PBF0
1854.69 USD
Buy Now
LT3689HMSE#TRPBF0
25004.79 USD
Buy Now
LT3689HMSE-5#TRPBF0
25004.79 USD
Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3689EMSE-5#PBF33
13.95 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LT3689 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3689-5.0. Optional, compare LT3689-5.0 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT3971-5.0 LT3971-5.0 product overviewLT3971-5.0 product overview Linear Technology DFN-10, MSOP-10
0% LT3991-5.0 LT3991-5.0 product overviewLT3991-5.0 product overview Linear Technology DFN-10, MSOP-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3689-5.0.

V-IN max. 36 V, I-OUT 0.7 A, V-OUT min. 5 V, Frequency typ. 2000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025006 6.8 1.1 1.3 142.00 2.8 x 2.8 x 3
744025100 10.0 1.0 1.1 170.00 2.8 x 2.8 x 3
74404024068 6.8 0.9 1.0 300.00 2.5 x 2 x 1.2
74404032068 6.8 1.2 0.9 120.00 3 x 3 x 1.5
74404032100 10.0 0.8 0.9 230.00 3 x 3 x 1.5
74404041100 10.0 1.3 1.0 168.00 4 x 4 x 1.2
74404042068 6.8 1.5 1.8 98.00 4 x 4 x 1.8
74404042100 10.0 1.2 1.5 150.00 4 x 4 x 1.8
744042006 6.8 1.5 1.3 80.00 4.8 x 4.8 x 2
744042008 8.2 1.4 1.1 100.00 4.8 x 4.8 x 2
744042100 10.0 1.3 1.0 120.00 4.8 x 4.8 x 2
744043006 6.8 1.3 1.3 80.00 4.8 x 4.8 x 3
744043008 8.2 1.3 1.1 90.00 4.8 x 4.8 x 3
744043100 10.0 1.2 1.0 95.00 4.8 x 4.8 x 3
744045006 6.8 1.1 1.6 160.00 4.5 x 3.2 x 2.9
744045008 8.2 1.0 1.6 200.00 4.5 x 3.2 x 2.9
744045100 10.0 1.0 1.5 240.00 4.5 x 3.2 x 2.9
744052006 6.2 1.5 1.6 70.00 5.8 x 5.8 x 2
744052007 7.5 1.4 1.5 70.00 5.8 x 5.8 x 2
744052009 9.0 1.3 1.4 90.00 5.8 x 5.8 x 2
744052100 10.0 1.1 1.3 105.00 5.8 x 5.8 x 2
744053006 6.2 2.2 1.7 40.00 5.8 x 5.8 x 3
744053008 8.2 2.1 1.6 50.00 5.8 x 5.8 x 3
744053100 10.0 1.5 1.4 60.00 5.8 x 5.8 x 3
744062006 6.2 1.9 1.8 40.00 6.8 x 6.8 x 2.5
744062007 7.5 1.7 1.6 50.00 6.8 x 6.8 x 2.5
744062100 10.0 1.6 1.4 53.00 6.8 x 6.8 x 2.5
7440680068 6.8 1.4 1.2 127.00 8 x 8 x 1.2
7440680082 8.2 1.4 1.1 142.00 8 x 8 x 1.2
7440680100 10.0 1.2 1.0 177.00 8 x 8 x 1.2
7440690068 6.8 1.8 1.7 88.00 8 x 8 x 1.5
7440690082 8.2 1.7 1.5 99.00 8 x 8 x 1.5
7440690100 10.0 1.6 1.3 112.00 8 x 8 x 1.5
7440700068 6.8 2.4 1.8 56.00 8 x 8 x 2
7440700082 8.2 2.2 1.7 70.50 8 x 8 x 2
7440700100 10.0 2.0 1.6 78.00 8 x 8 x 2
74408941089 8.9 1.0 1.7 240.00 4.8 x 4.8 x 2.1
74408941100 10.0 0.9 1.6 248.00 4.8 x 4.8 x 2.1
74438323068 6.8 0.9 1.6 563.00 2.5 x 2 x 1
74438323082 8.2 0.7 1.5 646.00 2.5 x 2 x 1
74438324068 6.8 0.9 1.6 560.00 2.5 x 2 x 1.2
74438324082 8.2 0.8 1.5 630.00 2.5 x 2 x 1.2
74438324100 10.0 0.7 1.4 680.00 2.5 x 2 x 1.2
744773082 8.2 1.5 1.8 116.00 4 x 4.5 x 3.5
74477310 10.0 1.5 1.7 118.00 4 x 4.5 x 3.5
744778510 10.0 1.9 1.6 100.00 5.9 x 6.2 x 3.3
744778610 10.0 2.1 1.8 74.00 5.9 x 6.2 x 5.1
78438323068 6.8 0.9 1.6 563.00 2.5 x 2 x 1
78438323082 8.2 0.7 1.5 646.00 2.5 x 2 x 1
784773082 8.2 1.5 1.8 116.00 4 x 4.5 x 3.5
78477310 10.0 1.5 1.7 118.00 4 x 4.5 x 3.5
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