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: 7

ARROW-NAC (11)

ProductStockPriceBuy
LT3970IMS#PBF863
13.82 USD
1003.24 USD
Buy Now
LT3970IDDB-5#TRMPBF77
13.73 USD
1003.17 USD
Buy Now
LT3970EDDB#TRMPBF342
13.36 USD
1002.85 USD
Buy Now
LT3970EDDB-3.3#TRMPBF500
5002.85 USD
Buy Now
LT3970EDDB-3.3#TRMPBF283
13.36 USD
1002.85 USD
Buy Now
LT3970IMS-3.3#PBF459
13.82 USD
1003.24 USD
Buy Now
LT3970IDDB-3.3#TRMPBF266
13.73 USD
1003.17 USD
Buy Now
LT3970EMS-5#PBF115
13.43 USD
1002.91 USD
Buy Now
LT3970EMS-5#PBF142
13.43 USD
1002.91 USD
Buy Now
LT3970IDDB#TRMPBF452
13.73 USD
1003.17 USD
Buy Now
LT3970EMS#PBF558
13.43 USD
1002.91 USD
Buy Now

Chip-One-Stop (14)

ProductStockPriceBuy
LT3970EDDB-3.3#TRMPBF454
17.16 USD
105.66 USD
255.39 USD
504.93 USD
1004.56 USD
2004.38 USD
Buy Now
LT3970EDDB#TRMPBF290
16.97 USD
105.50 USD
255.25 USD
504.81 USD
1004.44 USD
2004.26 USD
Buy Now
LT3970EDDB#TRMPBF290
16.97 USD
105.50 USD
255.25 USD
504.81 USD
1004.44 USD
2004.26 USD
Buy Now
LT3970EMS-3.3#PBF160
15.23 USD
104.40 USD
254.35 USD
504.15 USD
1004.05 USD
Buy Now
LT3970EMS-5#PBF360
13.39 USD
102.82 USD
502.62 USD
1002.59 USD
Buy Now
LT3970EMS-5#PBF360
13.39 USD
102.82 USD
502.62 USD
1002.59 USD
Buy Now
LT3970EMS#PBF48
14.38 USD
103.31 USD
Buy Now
LT3970EMS#PBF206
15.57 USD
104.68 USD
254.63 USD
504.42 USD
1004.31 USD
2004.11 USD
Buy Now
LT3970IDDB-3.3#TRMPBF269
17.47 USD
105.90 USD
255.63 USD
505.15 USD
1004.76 USD
2004.57 USD
Buy Now
LT3970IDDB-5#TRMPBF275
17.47 USD
105.90 USD
255.63 USD
505.15 USD
1004.76 USD
2004.57 USD
Buy Now
LT3970IDDB#TRMPBF2
16.29 USD
Buy Now
LT3970IMS-3.3#PBF160
17.65 USD
106.04 USD
255.76 USD
505.27 USD
1004.88 USD
Buy Now
LT3970IMS#PBF40
14.86 USD
103.98 USD
Buy Now
LT3970IMS#PBF940
15.83 USD
104.91 USD
254.85 USD
504.63 USD
1004.52 USD
2004.31 USD
Buy Now

DIGI-KEY (17)

ProductStockPriceBuy
LT3970EDDB#TRMPBF2000
5002.85 USD
Buy Now
LT3970EDDB#TRMPBF2330
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970EDDB#TRMPBF2330
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970EDDB-3.3#TRMPBF1500
5002.85 USD
Buy Now
LT3970EDDB-3.3#TRMPBF1516
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970EDDB-3.3#TRMPBF1516
15.74 USD
255.13 USD
1003.42 USD
2503.14 USD
Buy Now
LT3970IDDB#TRMPBF1000
5003.17 USD
Buy Now
LT3970IDDB#TRMPBF1460
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970IDDB#TRMPBF1460
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970EMS-3.3#PBF4560
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970EMS#PBF4424
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970EMS-5#PBF1355
15.13 USD
253.43 USD
1002.91 USD
Buy Now
LT3970IMS-3.3#PBF605
15.70 USD
253.82 USD
1003.24 USD
Buy Now
LT3970HMS#PBF157
16.23 USD
254.17 USD
1003.55 USD
Buy Now
LT3970IMS#PBF378
15.70 USD
253.82 USD
1003.24 USD
Buy Now
LT3970IDDB-3.3#TRMPBF0
5003.17 USD
Buy Now
LT3970IDDB-3.3#TRMPBF4
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970IDDB-3.3#TRMPBF4
16.36 USD
255.68 USD
1003.80 USD
2503.49 USD
Buy Now
LT3970EDDB#TRPBF0
25002.85 USD
Buy Now
LT3970EDDB-3.3#TRPBF0
25002.85 USD
Buy Now
LT3970EDDB-5#TRMPBF0
5002.85 USD
Buy Now
LT3970EDDB-5#TRPBF0
25002.85 USD
Buy Now
LT3970EDDB-3.42#TRMPBF0
5002.85 USD
Buy Now
LT3970EDDB-3.42#TRPBF0
25002.85 USD
Buy Now
LT3970EMS#TRPBF0
25003.00 USD
Buy Now

Element14 (4)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF135
15.87 USD
255.66 USD
1005.28 USD
Buy Now
LT3970EMS-3.3#PBF1217
18.14 USD
255.45 USD
1004.62 USD
Buy Now
LT3970EMS-5#PBF52
18.14 USD
255.45 USD
1004.62 USD
Buy Now
LT3970HMS#PBF202
19.88 USD
256.62 USD
1005.64 USD
Buy Now

FARNELL-ELEMENT14 (4)

ProductStockPriceBuy
LT3970EDDB-3.3#PBF230Buy Now
LT3970EMS-3.3#PBF1227Buy Now
LT3970EMS-5#PBF95Buy Now
LT3970HMS#PBF293Buy Now

RS-COMPONENTS (8)

ProductStockPriceBuy
LT3970EDDB-3.3#TRMPBF264Buy Now
LT3970EMS-3.3#PBF46Buy Now
LT3970EMS-5#PBF30Buy Now
LT3970EMS-5#PBF20Buy Now
LT3970EMS#PBF14Buy Now
LT3970EMS#PBF41Buy Now
LT3970EMS#PBF50Buy Now
LT3970IMS#PBF12Buy Now

TME (1)

ProductStockPriceBuy
LT3970EMS#PBF49Buy Now

Available Distributors with stock: 0

no online Distributor with LT3970 stock available

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
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