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: 0

no online Distributor with LT3505 stock available

Available Distributors with stock: 10

Arrow Electronics

ProductStockPriceBuy
LT3505EMS8E#PBF 2157
10002.93 $
5003.04 $
2503.12 $
1003.28 $
253.96 $
15.98 $
Buy Now
LT3505IMS8E#TRPBF 1030
25003.73 $
5003.78 $
2503.87 $
1004.08 $
254.93 $
17.43 $
Buy Now
LT3505IMS8E#PBF 255
10003.47 $
5003.61 $
2503.70 $
1003.89 $
254.70 $
17.09 $
Buy Now
LT3505IDD#PBF 24
10003.25 $
5003.37 $
2503.46 $
1213.64 $
Buy Now
LT3505EDD#PBF 0
10002.70 $
5002.81 $
2502.87 $
2423.02 $
Buy Now
LT3505IMS8E#TRPBF 0
25003.53 $
Buy Now
LT3505IDD#TRPBF 0
25003.45 $
Buy Now
LT3505EMS8E#TRPBF 0
25002.99 $
Buy Now
LT3505EDD#TRPBF 0
25002.72 $
Buy Now
LT3505EDD#TRPBF 0
25002.69 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LT3505EDD#PBF 26283
1002.89 €
253.49 €
15.25 €
Buy Now
ACPL-T350-500E 3349
5001.33 €
1001.50 €
102.59 €
12.92 €
Buy Now
ACPL-T350-500E 3349
5001.33 €
1001.50 €
102.59 €
12.92 €
Buy Now
IS31LT3505-SLS2-TR 3153
10000.35 €
5000.45 €
2500.48 €
1000.54 €
250.70 €
100.74 €
10.83 €
Buy Now
IS31LT3505-SLS2-TR 3153
10000.35 €
5000.45 €
2500.48 €
1000.54 €
250.70 €
100.74 €
10.83 €
Buy Now
ACPL-T350-500E 3000
50001.01 €
20001.03 €
10001.09 €
Buy Now
LT3505EDD#TRPBF 2832
2502.57 €
1002.64 €
253.11 €
14.68 €
Buy Now
LT3505EDD#TRPBF 2832
2502.57 €
1002.64 €
253.11 €
14.68 €
Buy Now
LT3505EDD#TRPBF 2500
25002.49 €
Buy Now
IS31LT3505-SLS2-TR 2500
250000.29 €
125000.30 €
50000.31 €
25000.32 €
Buy Now
LT3505IDD#TRPBF 2500
25003.30 €
Buy Now
LT3505IDD#TRPBF 2500
1003.64 €
254.40 €
16.63 €
Buy Now
LT3505IDD#PBF 1883
1003.47 €
254.20 €
16.32 €
Buy Now
LT3505EMS8E#PBF 1576
1003.13 €
253.78 €
15.70 €
Buy Now
LT3505IMS8E#PBF 1396
1003.71 €
254.49 €
16.76 €
Buy Now

Verical

ProductStockPriceBuy
LT3505EMS8E#PBF 2157
10002.93 $
5003.04 $
2503.12 $
1003.28 $
253.96 $
25.98 $
Buy Now
LT3505EDD#PBF 2130
1003.02 $
253.47 $
45.23 $
Buy Now
LT3505EMS8E#PBF 1048
1003.27 $
253.75 $
35.66 $
Buy Now
LT3505IMS8E#PBF 255
10003.47 $
5003.61 $
2503.70 $
1003.89 $
254.70 $
27.09 $
Buy Now
LT3505IDD#PBF 24
14.11 $
Buy Now

Avnet

ProductStockPriceBuy
ACPL-T350-560E 75970
100001.26 €
60001.34 €
40001.42 €
20001.50 €
10001.61 €
Buy Now
ACPL-T350-500E 0
300001.07 $
150001.10 $
80001.12 $
50001.16 $
30001.19 $
Buy Now
ACPL-T350-560E 0
300001.10 $
150001.13 $
80001.14 $
50001.19 $
30001.22 $
Buy Now
ACPL-T350-500E 0
10001.14 €
5001.18 €
1001.22 €
501.28 €
251.33 €
101.45 €
11.58 €
Buy Now
IS31LT3505-SLS2-TR 0
250000.34 $
150000.35 $
100000.37 $
50000.38 $
25000.40 $
Buy Now
IS31LT3505-SLS2-TR 0
160000.48 $
80000.50 $
40000.53 $
20000.55 $
10000.67 $
5000.86 $
13.00 $
Buy Now
IS31LT3505-SLS2-TR 0
250000.42 €
150000.48 €
100000.52 €
50000.57 €
25000.61 €
Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LT3505EDD#TRPBF 4379
16.14 $
254.07 $
1003.37 $
2503.20 $
5003.12 $
25002.92 $
Buy Now
LT3505EMS8E#PBF 776
16.29 $
254.17 $
1003.45 $
2503.28 $
5003.20 $
10003.08 $
Buy Now
LT3505EDD#PBF 1146
15.81 $
253.85 $
1003.18 $
2503.02 $
5002.96 $
10002.84 $
Buy Now
LT3505IMS8E#TRPBF 2708
17.82 $
255.19 $
1004.29 $
2504.07 $
5003.98 $
25003.72 $
Buy Now
LT3505EMS8E#TRPBF 1389
16.64 $
254.40 $
1003.64 $
2503.46 $
5003.38 $
25003.15 $
Buy Now
LT3505IMS8E#PBF 338
17.46 $
254.95 $
1004.09 $
2503.89 $
5003.80 $
10003.65 $
Buy Now
LT3505IDD#PBF 182
16.98 $
254.63 $
1003.83 $
2503.64 $
5003.55 $
10003.42 $
Buy Now
ACPL-T350-500E 4459
12.83 $
102.01 $
1001.57 $
5001.35 $
10001.20 $
20001.14 $
50001.09 $
Buy Now
ACPL-T350-560E 3247
12.90 $
102.05 $
1001.61 $
5001.38 $
10001.23 $
20001.16 $
50001.12 $
Buy Now
IS31LT3505-SLS2-TR 2500
10.80 $
100.70 $
1000.59 $
5000.53 $
10000.42 $
25000.39 $
Buy Now
IS31LT3505-SLS2-EBDC 5 Buy Now

Quest Components

ProductStockPriceBuy
LT3505EDD#PBF 8
73.00 $
34.00 $
16.00 $
Buy Now
LT3505EMS8E#PBF 52
374.82 $
45.57 $
111.13 $
Buy Now
LT3505EMS8E#PBF 12
55.08 $
25.77 $
16.93 $
Buy Now
LT3505EMS8E#PBF 1
29.28 $
111.13 $
Buy Now

RS Components

ProductStockPriceBuy
LT3505EDD#PBF 0
12.83 GBP
3632.76 GBP
Buy Now
LT3505EDD#PBF 61
14.67 GBP
54.43 GBP
103.10 GBP
254.66 GBP
504.35 GBP
Buy Now
LT3505EDD#PBF 122
103.10 GBP
254.66 GBP
504.35 GBP
Buy Now
LT3505EMS8E#PBF 0
104.58 GBP
254.12 GBP
Buy Now
LT3505EMS8E#PBF 29
15.04 GBP
104.58 GBP
254.12 GBP
Buy Now
LT3505EMS8E#PBF 0
13.36 GBP
2503.20 GBP
5003.12 GBP
Buy Now
LT3505IDD#PBF 121
15.62 GBP
105.04 GBP
254.45 GBP
503.87 GBP
1212.67 GBP
Buy Now
LT3505IDD#PBF 121
105.04 GBP
254.45 GBP
503.87 GBP
1212.67 GBP
Buy Now
LT3505IDD#PBF 0
13.40 GBP
3633.32 GBP
Buy Now
show stock=0hide stock=0

Chip 1 Exchange

ProductStockPriceBuy
LT3505EDD#PBF 38

Chip1Stop

ProductStockPriceBuy
LT3505EDD#PBF 17
103.96 $
14.68 $
Buy Now

IChunt

ProductStockPriceBuy
LT3505IMS8E#PBF 255
250.45 CNY
2533.48 CNY
10027.66 CNY
25026.31 CNY
Buy Now
LT3505EMS8E#PBF 906
340.30 CNY
2526.72 CNY
10023.28 CNY
Buy Now

Available Distributors without stock: 3

Richardson RFPD

ProductStockPriceBuy
LT3505EDD#PBF 0
2423.23 $
5003.14 $
10003.06 $
50002.95 $
Buy Now
LT3505IDD#TRPBF 0
25003.74 $
50003.60 $
Buy Now
LT3505IMS8E#PBF 0
2004.15 $
5004.04 $
10003.94 $
50003.78 $
Buy Now
LT3505EDD#TRPBF 0
25003.14 $
50003.02 $
Buy Now
LT3505EMS8E#TRPBF 0
25003.40 $
50003.26 $
Buy Now
LT3505EMS8E#PBF 0
2003.50 $
5003.41 $
10003.32 $
50003.19 $
Buy Now
LT3505IDD#PBF 0
1213.89 $
5003.77 $
10003.68 $
50003.54 $
Buy Now
LT3505IMS8E#TRPBF 0
25004.00 $
50003.85 $
Buy Now

element14 Asia-Pacific

ProductStockPriceBuy
LT3505EDD#PBF 0
5004.48 SGD
2504.59 SGD
1004.83 SGD
255.84 SGD
18.78 SGD
Buy Now
LT3505IMS8E#PBF 0
5005.76 SGD
2505.89 SGD
1006.20 SGD
257.50 SGD
111.29 SGD
Buy Now
LT3505EMS8E#PBF 0
5004.86 SGD
2504.97 SGD
1005.23 SGD
256.32 SGD
19.51 SGD
Buy Now

Farnell element14

ProductStockPriceBuy
LT3505EDD#PBF 0
5002.30 GBP
2502.31 GBP
1002.32 GBP
502.33 GBP
252.34 GBP
103.69 GBP
14.11 GBP
Buy Now
LT3505IMS8E#PBF 0
5002.75 GBP
2502.76 GBP
1002.79 GBP
503.10 GBP
253.40 GBP
104.38 GBP
15.27 GBP
Buy Now
LT3505EMS8E#PBF 0
5002.49 GBP
2502.79 GBP
1003.09 GBP
503.39 GBP
253.69 GBP
103.99 GBP
14.43 GBP
Buy Now
LT3505IDD#PBF 0
5002.64 GBP
2502.77 GBP
1002.91 GBP
503.04 GBP
253.17 GBP
104.09 GBP
14.93 GBP
Buy Now

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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