LTC3561A Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

LTC3561A 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 5.00 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 LTC3561A characteristics are a adjustable 2500 kHz switching frequency and 1 available package option(s): DFN-8 .

For the LTC3561A 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. 2.50 V
V-IN max. 5.50 V
I-OUT? 1.00 A
V-OUT min. 0.80 V
V-OUT max. 5.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2500 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. 450 µA
Operating min. -40 °C
Operating max. 125 °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

LTC3561A Datasheet

Link to the most up-to-date LTC3561A datasheet and the product page for EVM, tools and support information.

LTC3561A

LTC3561A Sample stock and distributor price breaks

LTC3561A prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 4

Digi-Key (5)

ProductStockPriceBuy
LTC3561AEDD#TRPBF2500
25002.27 USD
Buy Now
LTC3561AEDD#TRPBF3449
14.42 USD
253.95 USD
1002.73 USD
2502.50 USD
Buy Now
LTC3561AEDD#TRPBF3449
14.42 USD
253.95 USD
1002.73 USD
2502.50 USD
Buy Now
LTC3561AIDD#PBF662
14.38 USD
252.93 USD
1002.49 USD
Buy Now
LTC3561AEDD#PBF60
13.82 USD
252.55 USD
1002.17 USD
Buy Now
DC1072B0
1102.00 USD
Buy Now
LTC3561AIDD#TRPBF0
25002.59 USD
Buy Now

Element14 (2)

ProductStockPriceBuy
LTC3561AEDD#PBF21
16.40 USD
253.80 USD
1003.48 USD
Buy Now
LTC3561AIDD#PBF99
16.68 USD
254.47 USD
1003.80 USD
Buy Now

Farnell Element14 (2)

ProductStockPriceBuy
LTC3561AEDD#PBF21Buy Now
LTC3561AIDD#PBF99Buy Now

Mouser Electronics (1)

ProductStockPriceBuy
LTC3561AEDD#PBF41
13.93 USD
103.60 USD
252.61 USD
1002.23 USD
Buy Now
LTC3561AIDD#PBFNone
3632.55 USD
Buy Now
LTC3561AIDD#TRPBFNone
25002.65 USD
Buy Now
LTC3561AEDD#TRPBFNone
25002.33 USD
Buy Now

Available Distributors without stock: 1

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 5

Arrow Electronics

ProductStockPriceBuy
LTC3561AEDD#PBF 81
12.50 $
1002.13 $
Buy Now
LTC3561AIDD#TRPBF 0
1002.54 $
Buy Now
LTC3561AIDD#PBF 0
12.87 $
1002.44 $
Buy Now
LTC3561AIDD#PBF 0
12.87 $
1002.44 $
Buy Now
LTC3561AEDD#PBF 0
12.50 $
1002.13 $
Buy Now
LTC3561AEDD#TRPBF 0
1002.23 $
Buy Now
LTC3561AEDD#TRPBF 0
1002.23 $
Buy Now
show stock=0hide stock=0

Digi-Key

ProductStockPriceBuy
LTC3561AEDD#TRPBF 3449
2502.05 €
1002.24 €
253.24 €
13.63 €
Buy Now
LTC3561AEDD#TRPBF 3449
2502.05 €
1002.24 €
253.24 €
13.63 €
Buy Now
LTC3561AEDD#TRPBF 2500
25001.87 €
Buy Now
LTC3561AIDD#PBF 662
1002.04 €
252.40 €
13.60 €
Buy Now
LTC3561AEDD#PBF 60
1001.78 €
252.09 €
13.14 €
Buy Now
DC1072B 0
183.77 €
Buy Now
LTC3561AIDD#TRPBF 0
25002.13 €
Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LTC3561AEDD#PBF 41
13.83 $
103.51 $
252.55 $
1002.17 $
Buy Now
LTC3561AIDD#PBF 0
3632.49 $
Buy Now
LTC3561AIDD#TRPBF 0
25002.59 $
Buy Now
LTC3561AEDD#TRPBF 0
25002.27 $
Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
LTC3561AIDD#PBF 99
15.34 $
253.58 $
1003.04 $
Buy Now
LTC3561AEDD#PBF 21
15.12 $
253.04 $
1002.78 $
Buy Now

Farnell element14

ProductStockPriceBuy
LTC3561AIDD#PBF 99
13.29 GBP
251.96 GBP
1001.83 GBP
Buy Now
LTC3561AEDD#PBF 21
13.20 GBP
102.85 GBP
251.79 GBP
501.78 GBP
1001.77 GBP
Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3561A. Optional, compare LTC3561A 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% LTC3561 LTC3561 product overviewLTC3561 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 LTC3561A.

V-IN max. 5.5 V, I-OUT 1 A, V-OUT min. 0.8 V, Frequency typ. 2500 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
744028001 1.0 1.8 1.5 65.00 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
744029001 1.0 2.2 1.6 45.00 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
744031010 1.0 2.0 1.6 26.00 3.8 x 3.8 x 1.8
74404024010 1.0 2.2 2.6 37.00 2.5 x 2 x 1.2
74404032010 1.0 2.2 3.0 33.00 3 x 3 x 1.5
744042001 1.0 2.7 2.6 20.00 4.8 x 4.8 x 2
74438321010 1.0 1.3 2.5 163.00 2.5 x 2 x 0.6
74479262210 1.0 1.2 1.7 170.00 1.6 x 0.8 x 0.8
74479275210 1.0 1.8 2.1 69.00 2 x 1.25 x 1
74479276210 1.0 2.0 2.5 65.00 2 x 1.6 x 1
74479876168 0.7 1.8 1.7 60.00 2 x 1.6 x 1
74479876210 1.0 1.5 1.5 70.00 2 x 1.6 x 1
74479889210 1.0 2.0 2.0 85.00 2.5 x 2 x 1.2
74479899210 1.0 2.3 2.5 50.00 3.2 x 2.6 x 1.2
74479976210 1.0 1.8 2.4 75.00 2 x 1.6 x 0.5
74479977182 0.8 2.0 2.0 90.00 2 x 1.6 x 0.9
78438321010 1.0 1.3 2.5 163.00 2.5 x 2 x 0.6
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