LTC3561 Buck Converter overview

Description

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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
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Available Distributors with stock: 0

no online Distributor with LTC3561 stock available

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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