LT3505 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LT3505 is a 36.00 V non-sync Buck Converter from with 1.20 A output current. The maximum 36.00 V input voltage can be regulated down into a 0.78 V to 20.00 V output voltage.

It requires are a typical inductor size of 10.00 µH, a typical external component count of 12 and achieves a peak efficiency of 90 %. Further LT3505 characteristics are a adjustable 3000 kHz switching frequency and 2 available package option(s): MSOP-10 DFN-8 .

For the LT3505 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? 1.20 A
V-OUT min. 0.78 V
V-OUT max. 20.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 3000 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 3000 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Quiescent current max. 2700 µA
Operating min. -40 °C
Operating max. 125 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 10.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 90 %
Component count min. 12
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-10
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LT3505 Datasheet

Link to the most up-to-date LT3505 datasheet and the product page for EVM, tools and support information.

LT3505

LT3505 Sample stock and distributor price breaks

LT3505 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

DIGI-KEY (10)

ProductStockPriceBuy
LT3505EDD#PBF1014
14.82 USD
253.43 USD
1002.82 USD
Buy Now
LT3505EMS8E#PBF1899
15.23 USD
253.71 USD
1003.06 USD
Buy Now
LT3505IMS8E#PBF711
16.18 USD
254.40 USD
1003.62 USD
Buy Now
LT3505IDD#PBF521
15.78 USD
254.11 USD
1003.39 USD
Buy Now
LT3505EDD#TRPBF0
25002.92 USD
Buy Now
LT3505EDD#TRPBF2080
15.54 USD
254.95 USD
1003.50 USD
2503.21 USD
Buy Now
LT3505EDD#TRPBF2080
15.54 USD
254.95 USD
1003.50 USD
2503.21 USD
Buy Now
IS31LT3505-SLS2-TR0
25000.42 USD
50000.40 USD
125000.38 USD
250000.37 USD
Buy Now
IS31LT3505-SLS2-TR780
11.08 USD
100.96 USD
250.87 USD
1000.76 USD
2500.66 USD
5000.59 USD
10000.46 USD
Buy Now
IS31LT3505-SLS2-TR780
11.08 USD
100.96 USD
250.87 USD
1000.76 USD
2500.66 USD
5000.59 USD
10000.46 USD
Buy Now
ACPL-T350-500E0
10001.20 USD
20001.13 USD
50001.09 USD
Buy Now
ACPL-T350-500E993
13.35 USD
102.97 USD
252.20 USD
1001.91 USD
2501.72 USD
5001.53 USD
Buy Now
ACPL-T350-500E993
13.35 USD
102.97 USD
252.20 USD
1001.91 USD
2501.72 USD
5001.53 USD
Buy Now
ACPL-T350-560E0
30001.16 USD
Buy Now
LT3505EMS8E#TRPBF0
25003.16 USD
Buy Now
LT3505IDD#TRPBF0
25003.49 USD
Buy Now
LT3505IMS8E#TRPBF0
25003.72 USD
Buy Now
IS31LT3505-SLS2-EBDC0
10.00 USD
Buy Now

Element14 (4)

ProductStockPriceBuy
LT3505EDD#PBF266
17.54 USD
255.37 USD
1004.41 USD
Buy Now
LT3505EMS8E#PBF498
18.18 USD
255.81 USD
1004.79 USD
Buy Now
LT3505IDD#PBF28
19.04 USD
256.43 USD
1005.31 USD
Buy Now
LT3505IMS8E#PBF458
19.67 USD
256.88 USD
1005.67 USD
Buy Now

FARNELL-ELEMENT14 (4)

ProductStockPriceBuy
LT3505EDD#PBF316Buy Now
LT3505EMS8E#PBF498Buy Now
LT3505IDD#PBF33Buy Now
LT3505IMS8E#PBF511Buy Now

NEWARK (1)

ProductStockPriceBuy
LT3505EDD#PBF118
14.83 USD
253.42 USD
1002.82 USD
Buy Now
LT3505EDD#TRPBF0
14.98 USD
25003.57 USD
Buy Now
LT3505EMS8E#PBF0
15.21 USD
253.55 USD
1003.06 USD
Buy Now
LT3505IDD#PBF0
15.80 USD
254.11 USD
1003.39 USD
Buy Now
LT3505IMS8E#PBF0
16.19 USD
254.38 USD
1003.62 USD
Buy Now

RS-COMPONENTS (4)

ProductStockPriceBuy
LT3505EDD#PBF111Buy Now
LT3505EMS8E#PBF27Buy Now
LT3505EMS8E#PBF122Buy Now
LT3505IDD#PBF108Buy Now

Reichelt Elektronik (2)

ProductStockPriceBuy
LT3505EDD#PBF1Buy Now
LT3505EMS8E#PBF1Buy Now

Available Distributors with stock: 0

no online Distributor with LT3505 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LT3505. Optional, compare LT3505 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% A8582 A8582 product overviewA8582 product overview Allegro TSSOP-16
0% LT3480 LT3480 product overviewLT3480 product overview Linear Technology DFN-10, MSOP-10
0% LT3685 LT3685 product overviewLT3685 product overview Linear Technology DFN-10, MSOP-10
0% LT3686 LT3686 product overviewLT3686 product overview Linear Technology DFN-10
0% LT3686A LT3686A product overviewLT3686A product overview Linear Technology DFN-10
0% LT3980 LT3980 product overviewLT3980 product overview Linear Technology DFN-14, MSOP-16
0% MAX15020 MAX15020 product overviewMAX15020 product overview Maxim TQFN-20
0% MP4561 MP4561 product overviewMP4561 product overview MPS QFN-10
0% MPQ4561 MPQ4561 product overviewMPQ4561 product overview MPS QFN-10
0% TPS54140A TPS54140A product overviewTPS54140A product overview Texas Instruments SON-10, MSOP-10
10% LT3682 LT3682 product overviewLT3682 product overview Linear Technology DFN-12
10% LT3695 LT3695 product overviewLT3695 product overview Linear Technology MSOP-16
10% TPS54162-Q1 TPS54162-Q1 product overviewTPS54162-Q1 product overview Texas Instruments HTSSOP-20
10% TPS54262-Q1 TPS54262-Q1 product overviewTPS54262-Q1 product overview Texas Instruments HTSSOP-20
10% TPS57160-Q1 TPS57160-Q1 product overviewTPS57160-Q1 product overview Texas Instruments SON-10, MSOP-10
50% LT3971 LT3971 product overviewLT3971 product overview Linear Technology DFN-10, MSOP-10
50% LT3991 LT3991 product overviewLT3991 product overview Linear Technology DFN-10, MSOP-10
50% MP2454 MP2454 product overviewMP2454 product overview MPS QFN-10, MSOP-10
50% MPQ2454 MPQ2454 product overviewMPQ2454 product overview MPS QFN-10, MSOP-10
50% MPQ2454-AEC1 MPQ2454-AEC1 product overviewMPQ2454-AEC1 product overview MPS QFN-10, MSOP-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3505.

V-IN max. 36 V, I-OUT 1.2 A, V-OUT min. 0.78 V, Frequency typ. 3000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74402800082 0.8 2.0 1.6 53.00 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
7440300068 0.7 1.3 1.5 0.06 3.3 x 3.5 x 1.05
74404200056 0.6 3.1 3.0 19.00 4.8 x 4.8 x 2
74479876168 0.7 1.8 1.7 60.00 2 x 1.6 x 1
74479974156 0.6 1.7 2.4 80.00 2 x 1.2 x 0.5
74479977156 0.6 2.1 2.3 65.00 2 x 1.6 x 0.9
74479977182 0.8 2.0 2.0 90.00 2 x 1.6 x 0.9
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