AAT1143-0.6 Buck Converter overview



AAT1143-0.6 is a 5.50 V sync Buck Converter from with 0.40 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.60 V to 0.60 V output voltage.

It requires are a typical inductor size of 4.70 µH, a typical external component count of 3 and achieves a peak efficiency of 95 %. Further AAT1143-0.6 characteristics are a fixed 1000 kHz switching frequency and 1 available package option(s): SC70-8 .

For the AAT1143-0.6 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. 2.70 V
V-IN max. 5.50 V
I-OUT? 0.40 A
V-OUT min. 0.60 V
V-OUT max. 0.60 V
V-OUT 0.600 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 1000 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. 50 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ. 140 °C
Inductor size typ. 4.70 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 95 %
Component count min. 3
current limit adjustable no
Nr.of packages 1
SC70 SC70-8

AAT1143-0.6 Datasheet

Link to the most up-to-date AAT1143-0.6 datasheet and the product page for EVM, tools and support information.


AAT1143-0.6 Sample stock and distributor price breaks

AAT1143-0.6 prices and online available distributors.


Available Distributors with stock: 0

no online Distributor with AAT1143 stock available

Available Distributors without stock: 1

Mouser-Electronics (0)

30000.22 USD
60000.22 USD
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Available Distributors with stock: 0

no online Distributor with AAT1143 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to AAT1143-0.6. Optional, compare AAT1143-0.6 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% AAT1123-0.6 AAT1123-0.6 product overviewAAT1123-0.6 product overview Skyworks SC70-8
0% RP509Z-2-0.6 RP509Z-2-0.6 product overviewRP509Z-2-0.6 product overview Ricoh WLCSP-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of AAT1143-0.6.

V-IN max. 5.5 V, I-OUT 0.4 A, V-OUT min. 0.6 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028004 4.7 0.9 0.7 265.00 2.8 x 2.8 x 1.2
744029004 4.7 1.0 0.8 170.00 2.8 x 2.8 x 1.5
744030004 4.7 0.5 0.5 252.00 3.3 x 3.5 x 1.05
744031004 4.7 1.2 0.9 90.00 3.8 x 3.8 x 1.8
74479888247 4.7 1.0 0.7 380.00 2.5 x 2 x 1
74479889247 4.7 0.9 0.9 400.00 2.5 x 2 x 1.2
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