AAT1149A-1.875 Buck Converter overview

Description

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AAT1149A-1.875 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 1.88 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 98 %. Further AAT1149A-1.875 characteristics are a fixed 2200 kHz switching frequency and 1 available package option(s): WLCSP-5 .

For the AAT1149A-1.875 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. 2.20 V
V-IN max. 5.50 V
I-OUT? 0.40 A
V-OUT min. 1.88 V
V-OUT max. 1.88 V
V-OUT 1.875 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 2200 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. 6000 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 no
Topology Buck
Peak Efficiency 98 %
Component count min. 3
current limit adjustable no
Nr.of packages 1
CSP WLCSP-5
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP
DIP
TO
DDPAK

AAT1149A-1.875 Datasheet

Link to the most up-to-date AAT1149A-1.875 datasheet and the product page for EVM, tools and support information.

AAT1149A-1.875

AAT1149A-1.875 Sample stock and distributor price breaks

AAT1149A-1.875 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with AAT1149A stock available

Available Distributors without stock: 1

Mouser-Electronics (0)

ProductStockPriceBuy
AAT1149AIUV-1.875-T1None
30000.25 USD
60000.25 USD
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Available Distributors with stock: 0

no online Distributor with AAT1149A stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to AAT1149A-1.875. Optional, compare AAT1149A-1.875 side-by-side with other Buck Converter via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of AAT1149A-1.875.

V-IN max. 5.5 V, I-OUT 0.4 A, V-OUT min. 1.875 V, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744028003 3.3 1.0 0.9 185.00 2.8 x 2.8 x 1.2
744028004 4.7 0.9 0.7 265.00 2.8 x 2.8 x 1.2
744029003 3.3 1.3 1.0 110.00 2.8 x 2.8 x 1.5
744029004 4.7 1.0 0.8 170.00 2.8 x 2.8 x 1.5
744030003 3.3 0.7 0.7 198.00 3.3 x 3.5 x 1.05
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
74479887233A 3.3 1.2 0.6 180.00 2.5 x 2 x 1
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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