LT3970 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3970 is a 40.00 V sync Buck Converter from with 0.35 A output current. The maximum 40.00 V input voltage can be regulated down into a 1.21 V to 25.00 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 8 and achieves a peak efficiency of 85 %. Further LT3970 characteristics are a adjustable 2200 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-10 .

For the LT3970 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. 4.20 V
V-IN max. 40.00 V
I-OUT? 0.35 A
V-OUT min. 1.21 V
V-OUT max. 25.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2200 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 2250 kHz
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 3.5 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 22.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 85 %
Component count min. 8
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN DFN-10
SO/SOIC
SOP
DIP
TO
DDPAK

LT3970 Datasheet

Link to the most up-to-date LT3970 datasheet and the product page for EVM, tools and support information.

LT3970

LT3970 Sample stock and distributor price breaks

LT3970 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 8

Chip One Stop (4)

ProductStockPriceBuy
LT3970EMS-5#PBF50
15.38 USD
105.11 USD
503.38 USD
Buy Now
LT3970EMS#PBF16
15.71 USD
104.14 USD
Buy Now
LT3970IMS-5#PBF50
17.26 USD
104.71 USD
503.64 USD
Buy Now
LT3970IMS#PBF110
16.10 USD
105.68 USD
503.77 USD
1003.39 USD
Buy Now

Digi-Key (18)

ProductStockPriceBuy
LT3970EDDB#TRMPBF3000
5002.91 USD
Buy Now
LT3970EDDB#TRMPBF3370
15.86 USD
255.23 USD
1003.49 USD
2503.20 USD
Buy Now
LT3970EDDB#TRMPBF3370
15.86 USD
255.23 USD
1003.49 USD
2503.20 USD
Buy Now
LT3970IDDB#TRMPBF500
5003.23 USD
Buy Now
LT3970IDDB#TRMPBF948
16.49 USD
255.79 USD
1003.88 USD
2503.56 USD
Buy Now
LT3970IDDB#TRMPBF948
16.49 USD
255.79 USD
1003.88 USD
2503.56 USD
Buy Now
LT3970EMS#PBF2185
15.23 USD
253.50 USD
1002.97 USD
Buy Now
LT3970EMS-5#PBF1431
15.23 USD
253.50 USD
1002.97 USD
Buy Now
LT3970EMS-3.3#PBF1422
15.23 USD
253.50 USD
1002.97 USD
Buy Now
LT3970IMS-3.3#PBF769
15.82 USD
253.90 USD
1003.30 USD
Buy Now
LT3970HMS#PBF352
16.36 USD
254.25 USD
1003.62 USD
Buy Now
LT3970EMS#TRPBF0
25003.06 USD
Buy Now
LT3970EMS#TRPBF2390
16.00 USD
255.36 USD
1003.67 USD
2503.37 USD
Buy Now
LT3970EMS#TRPBF2390
16.00 USD
255.36 USD
1003.67 USD
2503.37 USD
Buy Now
LT3970EMS-3.3#TRPBF0
25003.07 USD
Buy Now
LT3970EMS-3.3#TRPBF1708
16.00 USD
255.36 USD
1003.68 USD
2503.38 USD
Buy Now
LT3970EMS-3.3#TRPBF1708
16.00 USD
255.36 USD
1003.68 USD
2503.38 USD
Buy Now
LT3970IDDB-3.3#TRMPBF0
5003.23 USD
Buy Now
LT3970IDDB-3.3#TRMPBF350
16.49 USD
255.79 USD
1003.88 USD
2503.56 USD
Buy Now
LT3970IDDB-3.3#TRMPBF350
16.49 USD
255.79 USD
1003.88 USD
2503.56 USD
Buy Now
LT3970IMS#PBF95
15.82 USD
253.90 USD
1003.30 USD
Buy Now
LT3970EDDB-3.3#TRMPBF0
5002.91 USD
Buy Now
LT3970EDDB-3.3#TRMPBF0
15.86 USD
255.23 USD
1003.49 USD
2503.20 USD
Buy Now
LT3970EDDB-3.3#TRMPBF0
15.86 USD
255.23 USD
1003.49 USD
2503.20 USD
Buy Now
LT3970EDDB#TRPBF0
25002.91 USD
Buy Now

Distrelec (3)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF47Buy Now
LT3970EMS#PBF0Buy Now
LT3970IDDB-5#PBF63Buy Now
LT3970IMS-5#PBF532Buy Now

Element14 (4)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF211
18.27 USD
255.76 USD
1004.96 USD
Buy Now
LT3970EMS-3.3#PBF199
17.97 USD
255.34 USD
1004.53 USD
Buy Now
LT3970EMS-5#PBF586
17.97 USD
255.34 USD
1004.53 USD
Buy Now
LT3970HMS#PBF54
19.92 USD
256.64 USD
1005.65 USD
Buy Now

Farnell Element14 (4)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF211Buy Now
LT3970EMS-3.3#PBF343Buy Now
LT3970EMS-5#PBF684Buy Now
LT3970HMS#PBF110Buy Now

Mouser-Electronics (9)

ProductStockPriceBuy
LT3970EMS#PBF347
15.38 USD
104.93 USD
253.59 USD
1003.05 USD
Buy Now
LT3970EDDB-3.3#TRMPBF326
16.01 USD
105.58 USD
255.36 USD
1003.58 USD
2503.28 USD
5002.99 USD
Buy Now
LT3970IMS#PBF250
15.98 USD
105.48 USD
254.00 USD
1003.39 USD
Buy Now
LT3970HMS#PBF250
16.53 USD
105.99 USD
254.36 USD
1003.71 USD
Buy Now
LT3970EDDB#TRMPBF91
16.01 USD
105.58 USD
255.36 USD
1003.58 USD
2503.28 USD
5002.99 USD
Buy Now
LT3970EMS-3.3#PBF350 On Order
15.38 USD
104.93 USD
253.59 USD
1003.05 USD
Buy Now
LT3970IMS-3.3#PBF100
15.98 USD
105.48 USD
254.00 USD
1003.39 USD
Buy Now
LT3970IDDB-5#TRPBF2400 On Order
16.54 USD
106.06 USD
255.84 USD
1003.98 USD
2503.65 USD
25003.31 USD
Buy Now
LT3970EMS-5#PBF245 On Order
15.38 USD
104.93 USD
253.59 USD
1003.05 USD
Buy Now
LT3970IDDB#TRMPBFNone
5003.31 USD
Buy Now
LT3970IDDB#TRPBFNone
25003.31 USD
Buy Now
LT3970EDDB#TRPBFNone
25002.99 USD
Buy Now
LT3970EDDB-3.3#TRPBFNone
25002.99 USD
Buy Now
LT3970EMS#TRPBFNone
25003.14 USD
Buy Now
LT3970IMS-5#TRPBFNone
25003.50 USD
Buy Now
LT3970EDDB-5#TRPBFNone
25002.99 USD
Buy Now
LT3970IMS#TRPBFNone
25003.49 USD
Buy Now
LT3970IDDB-3.3#TRMPBFNone
5003.31 USD
Buy Now
LT3970IDDB-5#TRMPBFNone
5003.31 USD
Buy Now
LT3970EMS-5#TRPBFNone
25003.15 USD
Buy Now
LT3970EMS-3.3#TRPBFNone
25003.15 USD
Buy Now
LT3970IDDB-3.3#TRPBFNone
25003.31 USD
Buy Now
LT3970IMS-5#PBFNone
2503.39 USD
Buy Now
LT3970HMS-3.3#PBFNone
2503.71 USD
Buy Now
LT3970HMS-5#PBFNone
2503.71 USD
Buy Now
LT3970EDDB-3.42#TRMPBFNone
5002.99 USD
Buy Now
LT3970EDDB-3.42#TRPBFNone
25002.99 USD
Buy Now
LT3970IMS-3.3#TRPBFNone
25003.50 USD
Buy Now
LT3970HMS#TRPBFNone
25003.81 USD
Buy Now
LT3970HMS-5#TRPBFNone
25003.81 USD
Buy Now
LT3970HMS-3.3#TRPBFNone
25003.81 USD
Buy Now
LT3970EDDB-5#TRMPBFNone
16.01 USD
105.58 USD
255.36 USD
1003.58 USD
2503.28 USD
5002.99 USD
Buy Now

RS Components (7)

ProductStockPriceBuy
LT3970EDDB-3.3#TRMPBF256Buy Now
LT3970EMS-3.3#PBF40Buy Now
LT3970EMS-5#PBF38Buy Now
LT3970EMS-5#PBF68Buy Now
LT3970EMS#PBF25Buy Now
LT3970EMS#PBF288Buy Now
LT3970IMS#PBF62Buy Now

Transfer Multisort Elektronik (1)

ProductStockPriceBuy
LT3970EMS#PBF50Buy Now

Available Distributors without stock: 1

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 10

Arrow Electronics

ProductStockPriceBuy
LT3970EMS#PBF 655
13.43 $
1002.91 $
Buy Now
LT3970IMS#PBF 588
13.82 $
1003.24 $
Buy Now
LT3970EDDB-5#TRMPBF 500
13.36 $
1002.85 $
Buy Now
LT3970EMS-5#PBF 440
13.43 $
1002.91 $
Buy Now
LT3970EMS-5#PBF 180
13.43 $
1002.91 $
Buy Now
LT3970IDDB#TRMPBF 160
13.73 $
1003.17 $
Buy Now
LT3970EMS-5#PBF 151
13.43 $
1002.91 $
Buy Now
LT3970IDDB-5#TRMPBF 67
13.73 $
1003.17 $
Buy Now
LT3970EDDB-3.3#TRMPBF 31
13.36 $
1002.85 $
Buy Now
LT3970IMS-3.3#PBF 13
13.82 $
1003.24 $
Buy Now
LT3970EDDB-3.3#TRMPBF 0
13.36 $
1002.85 $
Buy Now
LT3970EDDB-3.3#TRMPBF 0
13.36 $
1002.85 $
Buy Now
LT3970IDDB#TRMPBF 0
13.73 $
1003.17 $
Buy Now
LT3970EDDB-5#TRMPBF 0 Buy Now
LT3970IDDB-5#TRMPBF 0
13.73 $
1003.17 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3970EDDB#TRMPBF 3370
15.86 $
255.23 $
1003.49 $
2503.20 $
Buy Now
LT3970EDDB#TRMPBF 3370
15.86 $
255.23 $
1003.49 $
2503.20 $
Buy Now
LT3970EDDB#TRMPBF 3000
5002.91 $
Buy Now
LT3970EMS#PBF 2685
15.23 $
253.50 $
1002.97 $
Buy Now
LT3970EMS#TRPBF 2390
16.00 $
255.36 $
1003.67 $
2503.37 $
Buy Now
LT3970EMS#TRPBF 2390
16.00 $
255.36 $
1003.67 $
2503.37 $
Buy Now
LT3970EMS-3.3#TRPBF 1708
16.00 $
255.36 $
1003.68 $
2503.38 $
Buy Now
LT3970EMS-3.3#TRPBF 1708
16.00 $
255.36 $
1003.68 $
2503.38 $
Buy Now
LT3970EMS-5#PBF 1431
15.23 $
253.50 $
1002.97 $
Buy Now
LT3970EMS-3.3#PBF 1396
15.23 $
253.50 $
1002.97 $
Buy Now
LT3970IDDB#TRMPBF 948
16.49 $
255.79 $
1003.88 $
2503.56 $
Buy Now
LT3970IDDB#TRMPBF 948
16.49 $
255.79 $
1003.88 $
2503.56 $
Buy Now
LT3970IDDB#TRMPBF 500
5003.23 $
Buy Now
LT3970HMS#PBF 352
16.36 $
254.25 $
1003.62 $
Buy Now
LT3970IDDB-3.3#TRMPBF 350
16.49 $
255.79 $
1003.88 $
2503.56 $
Buy Now

Mouser Electronics

ProductStockPriceBuy
LT3970EMS#PBF 347
15.24 $
104.80 $
253.50 $
1002.97 $
Buy Now
LT3970EDDB-3.3#TRMPBF 326
15.86 $
105.44 $
255.23 $
1003.49 $
2503.20 $
5002.91 $
Buy Now
LT3970IMS#PBF 250
15.83 $
105.34 $
253.90 $
1003.30 $
Buy Now
LT3970HMS#PBF 250
16.37 $
105.84 $
254.25 $
1003.62 $
Buy Now
LT3970EDDB#TRMPBF 91
15.86 $
105.44 $
255.23 $
1003.49 $
2503.20 $
5002.91 $
Buy Now
LT3970EMS-3.3#PBF 75
15.24 $
104.80 $
253.50 $
1002.97 $
Buy Now
LT3970IMS-3.3#PBF 100
15.83 $
105.34 $
253.90 $
1003.30 $
Buy Now
LT3970IDDB-5#TRPBF 0
16.38 $
105.92 $
255.69 $
1003.88 $
2503.56 $
Buy Now
LT3970EMS-5#PBF 0
15.24 $
104.80 $
253.50 $
1002.97 $
Buy Now
LT3970IDDB#TRMPBF 0
5003.23 $
Buy Now
LT3970IDDB#TRPBF 0
25003.23 $
Buy Now
LT3970EDDB#TRPBF 0
25002.91 $
Buy Now
LT3970EDDB-3.3#TRPBF 0
25002.91 $
Buy Now
LT3970EMS#TRPBF 0
25003.06 $
Buy Now
LT3970IMS-5#TRPBF 0
25003.41 $
Buy Now
show stock=0hide stock=0

Quest Components

ProductStockPriceBuy
LT3970EMS#PBF 2
34.40 $
16.60 $
Buy Now

TME Electronic Components

ProductStockPriceBuy
LT3970EMS#PBF 50
17.00 $
36.46 $
105.70 $
254.94 $
Buy Now

ComS.I.T.

ProductStockPriceBuy
LT3970IDDBTRMPBF 915

element14 Asia-Pacific

ProductStockPriceBuy
LT3970EDDB-3.3#PBF 211
16.62 $
254.61 $
1003.96 $
Buy Now
LT3970EMS-3.3#PBF 199
16.38 $
254.27 $
1003.62 $
Buy Now
LT3970EMS-5#PBF 586
16.38 $
254.27 $
1003.62 $
Buy Now
LT3970HMS#PBF 54
17.94 $
255.31 $
1004.52 $
Buy Now

Farnell element14

ProductStockPriceBuy
LT3970EDDB-3.3#PBF 211
14.04 GBP
103.55 GBP
252.74 GBP
502.64 GBP
1002.54 GBP
Buy Now
LT3970EMS-3.3#PBF 343
14.25 GBP
103.83 GBP
252.56 GBP
502.50 GBP
1002.44 GBP
Buy Now
LT3970EMS-5#PBF 684
14.25 GBP
103.82 GBP
252.56 GBP
502.48 GBP
1002.40 GBP
Buy Now
LT3970HMS#PBF 60
15.08 GBP
104.61 GBP
253.08 GBP
503.02 GBP
1002.95 GBP
Buy Now

Chip1Stop

ProductStockPriceBuy
LT3970EMS-5#PBF 50
503.38 $
105.11 $
15.38 $
Buy Now
LT3970IMS#PBF 110
1003.39 $
503.77 $
16.10 $
Buy Now
LT3970EMS#PBF 16
104.14 $
15.71 $
Buy Now
LT3970IMS-5#PBF 50
503.64 $
104.71 $
17.26 $
Buy Now

RS Components

ProductStockPriceBuy
LT3970EMS-5#PBF 68
103.90 GBP
203.85 GBP
303.80 GBP
503.75 GBP
Buy Now
LT3970EMS-5#PBF 38
23.97 GBP
103.90 GBP
203.85 GBP
303.80 GBP
503.75 GBP
Buy Now
LT3970EMS-3.3#PBF 40
103.87 GBP
203.82 GBP
303.77 GBP
503.72 GBP
Buy Now
LT3970IMS#PBF 62
104.90 GBP
254.39 GBP
504.14 GBP
754.07 GBP
Buy Now
LT3970EMS#PBF 25
15.34 GBP
104.81 GBP
254.29 GBP
Buy Now
LT3970EMS#PBF 288
104.81 GBP
254.29 GBP
Buy Now
LT3970EDDB-3.3#TRMPBF 256
103.87 GBP
203.82 GBP
303.77 GBP
503.72 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3970. Optional, compare LT3970 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% LT3990 LT3990 product overviewLT3990 product overview Linear Technology DFN-10, MSOP-16
0% LM46000 LM46000 product overviewLM46000 product overview Texas Instruments HTSSOP-16
0% LM46000-Q1 LM46000-Q1 product overviewLM46000-Q1 product overview Texas Instruments HTSSOP-16
10% LM43600 LM43600 product overviewLM43600 product overview Texas Instruments HTSSOP-16
10% LM43600-Q1 LM43600-Q1 product overviewLM43600-Q1 product overview Texas Instruments HTSSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3970.

V-IN max. 40 V, I-OUT 0.35 A, V-OUT min. 1.21 V, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028004 4.7 0.9 0.7 265.00 2.8 x 2.8 x 1.2
744029004 4.7 1.0 0.8 170.00 2.8 x 2.8 x 1.5
744030004 4.7 0.5 0.5 252.00 3.3 x 3.5 x 1.05
744031004 4.7 1.2 0.9 90.00 3.8 x 3.8 x 1.8
74479888247 4.7 1.0 0.7 380.00 2.5 x 2 x 1
74479889247 4.7 0.9 0.9 400.00 2.5 x 2 x 1.2
0Results
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10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
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