LTC3563 Buck Converter overview



LTC3563 is a 5.50 V sync Buck Converter from with 0.50 A output current. The maximum 5.50 V input voltage can be regulated down into a 1.28 V to 1.88 V output voltage.

It requires are a typical inductor size of 2.20 µH, a typical external component count of 3 and achieves a peak efficiency of 96 %. Further LTC3563 characteristics are a fixed 2250 kHz switching frequency and 1 available package option(s): DFN-6 .

For the LTC3563 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.

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V-IN min. 2.50 V
V-IN max. 5.50 V
I-OUT? 0.50 A
V-OUT min. 1.28 V
V-OUT max. 1.88 V
V-OUT adjustable V
V-OUT programmable yes
sync/non-sync sync
Frequency typ. 2250 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 500 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 yes
Topology Buck
Peak Efficiency 96 %
Component count min. 3
current limit adjustable no
Nr.of packages 1

LTC3563 Datasheet

Link to the most up-to-date LTC3563 datasheet and the product page for EVM, tools and support information.


LTC3563 Sample stock and distributor price breaks

LTC3563 prices and online available distributors.

Available Distributors with stock: 1


5001.88 USD
Buy Now
13.71 USD
253.32 USD
1002.26 USD
2502.07 USD
Buy Now
13.71 USD
253.32 USD
1002.26 USD
2502.07 USD
Buy Now
25001.88 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3563 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3563. Optional, compare LTC3563 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% AS1339 AS1339 product overviewAS1339 product overview AMS CSP-16
0% ADP2147-0,9-1,3 ADP2147-0,9-1,3 product overviewADP2147-0,9-1,3 product overview Analog Devices WLCSP-6
0% FAN5365 FAN5365 product overviewFAN5365 product overview Fairchild CSP-9
0% LTC3447 LTC3447 product overviewLTC3447 product overview Linear Technology DFN-10
0% MAX1572 MAX1572 product overviewMAX1572 product overview Maxim TQFN-12
0% MAX77178 MAX77178 product overviewMAX77178 product overview Maxim WLP-12
0% MAX8581 MAX8581 product overviewMAX8581 product overview Maxim TDFN-EP-10
0% MAX8582 MAX8582 product overviewMAX8582 product overview Maxim TDFN-EP-10
0% MAX8884 MAX8884 product overviewMAX8884 product overview Maxim CSP-16
0% MIC23051-1.15-1.40 MIC23051-1.15-1.40 product overviewMIC23051-1.15-1.40 product overview Micrel MLF-8
0% MIC23051-1.2-1.8 MIC23051-1.2-1.8 product overviewMIC23051-1.2-1.8 product overview Micrel MLF-8
0% DC6M502X6-1.2-1.5-A DC6M502X6-1.2-1.5-A product overviewDC6M502X6-1.2-1.5-A product overview NXP CSP-6
0% DC6M502X6-1.2-1.8-A DC6M502X6-1.2-1.8-A product overviewDC6M502X6-1.2-1.8-A product overview NXP CSP-6
0% DC6M602X6-1.2-1.5-A DC6M602X6-1.2-1.5-A product overviewDC6M602X6-1.2-1.5-A product overview NXP CSP-6
0% DC6M602X6-1.2-1.8-A DC6M602X6-1.2-1.8-A product overviewDC6M602X6-1.2-1.8-A product overview NXP CSP-6
0% SC194A SC194A product overviewSC194A product overview Semtech MLP-10
0% SC195 SC195 product overviewSC195 product overview Semtech MLPQ-8
0% SC202A SC202A product overviewSC202A product overview Semtech MLPQ-13
0% AAT1142 AAT1142 product overviewAAT1142 product overview Skyworks TSOPJW-12, TDFN-12
0% AAT1171 AAT1171 product overviewAAT1171 product overview Skyworks TDFN-12, WLCSP-12
0% AAT2503 AAT2503 product overviewAAT2503 product overview Skyworks QFN-20
0% AAT2504 AAT2504 product overviewAAT2504 product overview Skyworks QFN-20
0% SKY87201 SKY87201 product overviewSKY87201 product overview Skyworks STDFN-8
10% DC6M502X6-1.5-1.8-A DC6M502X6-1.5-1.8-A product overviewDC6M502X6-1.5-1.8-A product overview NXP CSP-6
10% DC6M602X6-1.5-1.8-A DC6M602X6-1.5-1.8-A product overviewDC6M602X6-1.5-1.8-A product overview NXP CSP-6
50% TPS62740 TPS62740 product overviewTPS62740 product overview Texas Instruments SON-12
50% TPS62741 TPS62741 product overviewTPS62741 product overview Texas Instruments SON-12
50% TPS62742 TPS62742 product overviewTPS62742 product overview Texas Instruments WSON-12
50% TPS62743 TPS62743 product overviewTPS62743 product overview Texas Instruments DSBGA-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3563.

V-IN max. 5.5 V, I-OUT 0.5 A, V-OUT min. 1.28 V, Frequency typ. 2250 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028002 2.2 1.3 1.0 125.00 2.8 x 2.8 x 1.2
744028003 3.3 1.0 0.9 185.00 2.8 x 2.8 x 1.2
744029002 2.2 1.5 1.2 88.00 2.8 x 2.8 x 1.5
744029003 3.3 1.3 1.0 110.00 2.8 x 2.8 x 1.5
744030002 2.2 0.7 0.8 140.00 3.3 x 3.5 x 1.05
744030003 3.3 0.7 0.7 198.00 3.3 x 3.5 x 1.05
74479787222A 2.2 1.8 0.7 85.00 2.5 x 2 x 1
74479887222A 2.2 1.4 0.8 140.00 2.5 x 2 x 1
74479887233A 3.3 1.2 0.6 180.00 2.5 x 2 x 1
74479888233 3.3 1.1 1.1 250.00 2.5 x 2 x 1
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