LTC3561 Buck Converter overview

Description

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Category
Sub-Category

LTC3561 is a 5.50 V sync Buck Converter from with 1.00 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.80 V to 5.50 V output voltage.

It requires are a typical inductor size of 2.20 µH, a typical external component count of 8 and achieves a peak efficiency of 95 %. Further LTC3561 characteristics are a adjustable 1000 kHz switching frequency and 1 available package option(s): DFN-8 .

For the LTC3561 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. 2.63 V
V-IN max. 5.50 V
I-OUT? 1.00 A
V-OUT min. 0.80 V
V-OUT max. 5.50 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min. 200 kHz
Frequency adj./ ext.clock max 4000 kHz
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
Quiescent current max. 350 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ. 150 °C
Inductor size typ. 2.20 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 95 %
Component count min. 8
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN DFN-8
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3561 Datasheet

Link to the most up-to-date LTC3561 datasheet and the product page for EVM, tools and support information.

LTC3561

LTC3561 Sample stock and distributor price breaks

LTC3561 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 7

ARROW-NAC (3)

ProductStockPriceBuy
LTC3561EDD#PBF4
13.57 USD
1002.94 USD
Buy Now
LTC3561AIDD#PBF601
12.87 USD
1002.44 USD
Buy Now
LTC3561AEDD#PBF826
12.50 USD
1002.13 USD
Buy Now

Chip-One-Stop (5)

ProductStockPriceBuy
LTC3561AEDD#PBF189
13.95 USD
103.37 USD
503.14 USD
1003.10 USD
Buy Now
LTC3561AEDD#TRPBF5000
25002.35 USD
Buy Now
LTC3561AIDD#PBF88
14.54 USD
103.82 USD
253.77 USD
503.60 USD
Buy Now
LTC3561EDD#PBF586
14.79 USD
104.52 USD
503.36 USD
1002.99 USD
2422.93 USD
Buy Now
LTC3561EDD#PBF3028
15.65 USD
104.75 USD
254.70 USD
504.48 USD
1004.37 USD
2004.17 USD
Buy Now

DIGI-KEY (6)

ProductStockPriceBuy
LTC3561AIDD#PBF1695
14.30 USD
252.87 USD
1002.44 USD
Buy Now
LTC3561EDD#PBF830
15.03 USD
253.57 USD
1002.94 USD
Buy Now
LTC3561AEDD#TRPBF0
25002.23 USD
Buy Now
LTC3561AEDD#TRPBF537
14.33 USD
253.87 USD
1002.68 USD
2502.45 USD
Buy Now
LTC3561AEDD#TRPBF537
14.33 USD
253.87 USD
1002.68 USD
2502.45 USD
Buy Now
LTC3561AEDD#PBF98
13.74 USD
252.50 USD
1002.13 USD
Buy Now
DC1072B2
1100.50 USD
Buy Now
LTC3561AIDD#TRPBF0
25002.54 USD
Buy Now
LTC3561EDD#TRPBF0
25003.04 USD
Buy Now

Element14 (2)

ProductStockPriceBuy
LTC3561AEDD#PBF73
15.98 USD
254.00 USD
1003.41 USD
Buy Now
LTC3561AIDD#PBF242
16.88 USD
254.59 USD
1003.90 USD
Buy Now
LTC3561EDD#PBF0
18.04 USD
255.71 USD
1004.70 USD
Buy Now

FARNELL-ELEMENT14 (3)

ProductStockPriceBuy
LTC3561AEDD#PBF192Buy Now
LTC3561AIDD#PBF242Buy Now
LTC3561EDD#PBF5Buy Now

NEWARK (2)

ProductStockPriceBuy
LTC3561AEDD#PBF0
13.75 USD
252.52 USD
1002.13 USD
Buy Now
LTC3561AEDD#TRPBF0
13.63 USD
25002.60 USD
Buy Now
LTC3561AIDD#PBF6
14.30 USD
252.88 USD
1002.44 USD
Buy Now
LTC3561EDD#PBF112
12.94 USD
252.94 USD
1002.94 USD
Buy Now

RS-COMPONENTS (1)

ProductStockPriceBuy
LTC3561EDD#PBF60Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3561 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3561. Optional, compare LTC3561 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% IR3843WM IR3843WM product overviewIR3843WM product overview IRF PQFN-15
0% ISL8502 ISL8502 product overviewISL8502 product overview Intersil QFN-24
0% ISL8502A ISL8502A product overviewISL8502A product overview Intersil QFN-24
0% LTC3561A LTC3561A product overviewLTC3561A product overview Linear Technology DFN-8
0% LTC3600 LTC3600 product overviewLTC3600 product overview Linear Technology DFN-12, MSOP-12
0% LTC3601 LTC3601 product overviewLTC3601 product overview Linear Technology QFN-16, MSOP-16
0% MIC22200 MIC22200 product overviewMIC22200 product overview Micrel MFL-10
0% MIC22205 MIC22205 product overviewMIC22205 product overview Micrel MFL-10
0% LM20242 LM20242 product overviewLM20242 product overview Texas Instruments HTSSOP-20
0% LM3100 LM3100 product overviewLM3100 product overview Texas Instruments HTSSOP-20
0% LMR24210 LMR24210 product overviewLMR24210 product overview Texas Instruments DSBGA-28
0% LMR24220 LMR24220 product overviewLMR24220 product overview Texas Instruments DSBGA-28
0% TPS54218 TPS54218 product overviewTPS54218 product overview Texas Instruments QFN-16
0% ER2120 ER2120 product overviewER2120 product overview Altera QFN-24
0% ADP2441 ADP2441 product overviewADP2441 product overview Analog Devices LFCSP-12
10% TLV62150 TLV62150 product overviewTLV62150 product overview Texas Instruments QFN-16
10% TPS62150 TPS62150 product overviewTPS62150 product overview Texas Instruments QFN-16
10% TPS62150A TPS62150A product overviewTPS62150A product overview Texas Instruments QFN-16
10% TPS62150A-Q1 TPS62150A-Q1 product overviewTPS62150A-Q1 product overview Texas Instruments QFN-16
10% TPS62150A-Q1 TPS62150A-Q1 product overviewTPS62150A-Q1 product overview Texas Instruments QFN-16
25% LM43601 LM43601 product overviewLM43601 product overview Texas Instruments HTSSOP-16
25% LM43601-Q1 LM43601-Q1 product overviewLM43601-Q1 product overview Texas Instruments HTSSOP-16
25% LM46001 LM46001 product overviewLM46001 product overview Texas Instruments HTSSOP-16
25% LM46001-Q1 LM46001-Q1 product overviewLM46001-Q1 product overview Texas Instruments HTSSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3561.

V-IN max. 5.5 V, I-OUT 1 A, V-OUT min. 0.8 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025002 2.2 1.8 2.4 57.00 2.8 x 2.8 x 3
744031002 2.5 1.5 1.3 50.00 3.8 x 3.8 x 1.8
74404024022 2.2 1.8 2.0 80.00 2.5 x 2 x 1.2
74404032022 2.2 1.8 1.7 50.00 3 x 3 x 1.5
7440420018 1.8 2.4 2.4 40.00 4.8 x 4.8 x 2
7440420027 2.7 2.0 2.2 47.00 4.8 x 4.8 x 2
7440430018 1.8 2.7 2.5 20.00 4.8 x 4.8 x 3
7440430022 2.2 2.5 2.4 27.00 4.8 x 4.8 x 3
7440430027 2.7 2.4 2.0 25.00 4.8 x 4.8 x 3
7440680017 1.7 2.5 2.4 41.00 8 x 8 x 1.2
7440680027 2.7 2.2 1.9 52.00 8 x 8 x 1.2
74438322022 2.2 1.3 2.2 252.00 2.5 x 2 x 0.8
74438323022 2.2 1.3 2.5 147.00 2.5 x 2 x 1
74438343022 2.2 1.1 2.5 225.00 2.5 x 1.6 x 0.6
74479275222 2.2 1.3 1.7 166.00 2 x 1.25 x 1
74479276222 2.2 1.4 1.8 135.00 2 x 1.6 x 1
74479276222C 2.2 1.6 2.5 112.00 2 x 1.25 x 1
74479287222 2.2 1.5 2.5 132.00 2.5 x 2 x 1
74479888222 2.2 1.2 1.4 200.00 2.5 x 2 x 1
74479889222 2.2 1.3 1.7 250.00 2.5 x 2 x 1.2
78438322022 2.2 1.3 2.2 252.00 2.5 x 2 x 0.8
78438323022 2.2 1.3 2.5 147.00 2.5 x 2 x 1
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