AAT2503 Buck Converter overview

Description

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AAT2503 is a 5.50 V sync Buck Converter from with 0.80 A output current. The maximum 5.50 V input voltage can be regulated down into a 0.60 V to 5.50 V output voltage.

It requires are a typical inductor size of 2.20 µH, a typical external component count of 11 and achieves a peak efficiency of 93 %. Further AAT2503 characteristics are a fixed 2000 kHz switching frequency and 1 available package option(s): QFN-20 .

For the AAT2503 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. 2.70 V
V-IN max. 5.50 V
I-OUT? 0.80 A
V-OUT min. 0.60 V
V-OUT max. 5.50 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. 1600 kHz
Frequency adj./ ext.clock max 2400 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK yes
Quiescent current max. 145 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 93 %
Component count min. 11
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-20
SO/SOIC
SOP
DIP
TO
DDPAK

AAT2503 Datasheet

Link to the most up-to-date AAT2503 datasheet and the product page for EVM, tools and support information.

AAT2503

AAT2503 Sample stock and distributor price breaks

AAT2503 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with AAT2503 stock available

Available Distributors without stock: 2

DIGI-KEY (0)

ProductStockPriceBuy
A9AAT-2503E0
13.67 USD
103.52 USD
253.23 USD
503.08 USD
1002.94 USD
2502.57 USD
5002.50 USD
10002.13 USD
25001.98 USD
Buy Now

Mouser-Electronics (0)

ProductStockPriceBuy
AAT2503IZL-BAA-DB1NoneBuy Now

Available Distributors with stock: 0

no online Distributor with AAT2503 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to AAT2503. Optional, compare AAT2503 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
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 AAT2503.

V-IN max. 5.5 V, I-OUT 0.8 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)
744028001 1.0 1.8 1.5 65.00 2.8 x 2.8 x 1.2
744029001 1.0 2.2 1.6 45.00 2.8 x 2.8 x 1.5
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
744031010 1.0 2.0 1.6 26.00 3.8 x 3.8 x 1.8
74479262210 1.0 1.2 1.7 170.00 1.6 x 0.8 x 0.8
74479776210 1.0 1.4 1.0 90.00 2 x 1.6 x 1
74479787210B 1.0 2.0 1.2 60.00 2.5 x 2 x 1
74479787215A 1.5 1.9 1.1 70.00 2.5 x 2 x 1
74479876210 1.0 1.5 1.5 70.00 2 x 1.6 x 1
74479887210A 1.0 1.6 1.0 100.00 2.5 x 2 x 1
74479889210 1.0 2.0 2.0 85.00 2.5 x 2 x 1.2
74479976215 1.5 1.6 1.9 100.00 2 x 1.6 x 0.5
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