AAT1171 Buck Converter overview



AAT1171 is a 5.50 V sync Buck Converter from with 0.60 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.60 V to 3.60 V output voltage.

It requires are a typical inductor size of 2.20 µH, a typical external component count of 4 and achieves a peak efficiency of 95 %. Further AAT1171 characteristics are a fixed 2000 kHz switching frequency and 2 available package option(s): WLCSP-12 TDFN-12 .

For the AAT1171 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.

Search Filter
V-IN min. 2.70 V
V-IN max. 5.50 V
I-OUT? 0.60 A
V-OUT min. 0.60 V
V-OUT max. 3.60 V
V-OUT adjustable V
V-OUT programmable yes
sync/non-sync sync
Frequency typ. 2000 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 19800 kHz
Frequency adj./ ext.clock max 19800 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 70 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. 2.20 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 4
current limit adjustable no
Nr.of packages 2

AAT1171 Datasheet

Link to the most up-to-date AAT1171 datasheet and the product page for EVM, tools and support information.


AAT1171 Sample stock and distributor price breaks

AAT1171 prices and online available distributors.


Available Distributors with stock: 0

no online Distributor with AAT1171 stock available

Available Distributors with stock: 1

America II Electronics

AAT1171IUP-1-T1 6262 Buy Now

Available Distributors without stock: 1

Mouser Electronics

AAT1171IWP-5-T1 0
30000.47 $
60000.45 $
Buy Now
AAT1171IUP-1-T1 0 Buy Now
AAT1171IWP-4-T1 0 Buy Now

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to AAT1171. Optional, compare AAT1171 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% AAT1142 AAT1142 product overviewAAT1142 product overview Skyworks TSOPJW-12, TDFN-12
0% AAT2503 AAT2503 product overviewAAT2503 product overview Skyworks QFN-20
0% AAT2504 AAT2504 product overviewAAT2504 product overview Skyworks QFN-20

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of AAT1171.

V-IN max. 5.5 V, I-OUT 0.6 A, V-OUT min. 0.6 V, Frequency typ. 2000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744030001 1.2 1.0 1.1 95.00 3.3 x 3.5 x 1.05
744031001 1.5 1.8 1.6 40.00 3.8 x 3.8 x 1.8
74479775215 1.5 1.1 0.8 160.00 2 x 1.2 x 1.2
74479776215 1.5 1.3 0.8 110.00 2 x 1.6 x 1
74479787215A 1.5 1.9 1.1 70.00 2.5 x 2 x 1
Fresh Search
Replacement Search with
0% tolerance (0)
10% tolerance (0)
25% tolerance (0)
50% tolerance (0)
add to Compare
Last Tweets
Meet us at the Embedded Show in Nuremberg 27-28.2.
Meet us at this weeks PCIM tradeshow in Nuremberg, Tue+Wed, Details under info@dcdcselector.com
With the help of #OEMsecrets we show for all Selectors and products worldwide distributor inventory and prices. https://t.co/udaDPmshky
Loading. Please wait.