AAT1151-1.8 Buck Converter overview

Description

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Category
Sub-Category

AAT1151-1.8 is a 5.50 V sync Buck Converter from with 0.70 A output current. The maximum 5.50 V input voltage can be regulated down into a 1.80 V to 1.80 V output voltage.

It requires are a typical inductor size of 3.00 µH, a typical external component count of 5 and achieves a peak efficiency of 95 %. Further AAT1151-1.8 characteristics are a fixed 850 kHz switching frequency and 2 available package option(s): MSOP-8 QFN-16 .

For the AAT1151-1.8 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? 0.70 A
V-OUT min. 1.80 V
V-OUT max. 1.80 V
V-OUT 1.800 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 850 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. 300 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. 3.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 5
current limit adjustable no
Nr.of packages 2
CSP
SC70
SOT
MSOP MSOP-8
QFN/DFN QFN-16
SO/SOIC
SOP
DIP
TO
DDPAK

AAT1151-1.8 Datasheet

Link to the most up-to-date AAT1151-1.8 datasheet and the product page for EVM, tools and support information.

AAT1151-1.8

AAT1151-1.8 Sample stock and distributor price breaks

AAT1151-1.8 prices and online available distributors.

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Available Distributors with stock: 0

no online Distributor with AAT1151 stock available

Available Distributors without stock: 1

Mouser-Electronics (0)

ProductStockPriceBuy
AAT1151IVN-1.0-T1None
30000.37 USD
Buy Now
AAT1151IVN-2.5-T1None
30000.39 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with AAT1151 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to AAT1151-1.8. Optional, compare AAT1151-1.8 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ADP2105-1,8 ADP2105-1,8 product overviewADP2105-1,8 product overview Analog Devices QFN-16
0% ADP2120-1,8 ADP2120-1,8 product overviewADP2120-1,8 product overview Analog Devices QFN-10
0% ADP2138-1,8 ADP2138-1,8 product overviewADP2138-1,8 product overview Analog Devices WLCSP-6
0% ADP2139-1,8 ADP2139-1,8 product overviewADP2139-1,8 product overview Analog Devices WLCSP-6
0% MAX1556-1.8 MAX1556-1.8 product overviewMAX1556-1.8 product overview Maxim TDFN-EP-10
0% MAX1742-1.8 MAX1742-1.8 product overviewMAX1742-1.8 product overview Maxim QSOP-16
0% MAX1842-1.8 MAX1842-1.8 product overviewMAX1842-1.8 product overview Maxim QSOP-16
0% MAX1928-1.8 MAX1928-1.8 product overviewMAX1928-1.8 product overview Maxim u00b5MAX-10
0% MAX8884-1.8 MAX8884-1.8 product overviewMAX8884-1.8 product overview Maxim CSP-16
0% BU90004 BU90004 product overviewBU90004 product overview Rohm CSP-6
0% LM3691-1.8 LM3691-1.8 product overviewLM3691-1.8 product overview Texas Instruments DSBGA-6
0% TPS62044 TPS62044 product overviewTPS62044 product overview Texas Instruments QFN-10, MSOP
0% TPS62161 TPS62161 product overviewTPS62161 product overview Texas Instruments SON-8
0% TPS62293-Q1 TPS62293-Q1 product overviewTPS62293-Q1 product overview Texas Instruments SON-6, SOT-5
0% TPS62293 TPS62293 product overviewTPS62293 product overview Texas Instruments SON-6, SOT-5
0% RP505K-1.8 RP505K-1.8 product overviewRP505K-1.8 product overview Ricoh DFN-8
0% TS30111-1.8 TS30111-1.8 product overviewTS30111-1.8 product overview Triune Systems QFN-16
0% TS30011-1.8 TS30011-1.8 product overviewTS30011-1.8 product overview Triune Systems QFN-16
0% TS33001-1.8 TS33001-1.8 product overviewTS33001-1.8 product overview Triune Systems QFN-16
0% TS30021-1.8 TS30021-1.8 product overviewTS30021-1.8 product overview Triune Systems QFN-16
0% MP2148-1.8 MP2148-1.8 product overviewMP2148-1.8 product overview MPS QFN-6
0% AS1382C-1.8 AS1382C-1.8 product overviewAS1382C-1.8 product overview AMS WLCSP-6
0% RP509Z-1-1.8 RP509Z-1-1.8 product overviewRP509Z-1-1.8 product overview Ricoh WLCSP-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of AAT1151-1.8.

V-IN max. 5.5 V, I-OUT 0.7 A, V-OUT min. 1.8 V, Frequency typ. 850 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025004 4.7 1.4 1.7 100.00 2.8 x 2.8 x 3
744025006 6.8 1.1 1.3 142.00 2.8 x 2.8 x 3
744031004 4.7 1.2 0.9 90.00 3.8 x 3.8 x 1.8
74404024047 4.7 1.1 1.2 175.00 2.5 x 2 x 1.2
74404024068 6.8 0.9 1.0 300.00 2.5 x 2 x 1.2
74404032047 4.7 1.3 1.2 96.00 3 x 3 x 1.5
74404032068 6.8 1.2 0.9 120.00 3 x 3 x 1.5
74404042068 6.8 1.5 1.8 98.00 4 x 4 x 1.8
744042004 4.7 1.7 1.7 70.00 4.8 x 4.8 x 2
744042005 5.6 1.6 1.4 80.00 4.8 x 4.8 x 2
744042006 6.8 1.5 1.3 80.00 4.8 x 4.8 x 2
744043004 4.7 1.6 1.7 50.00 4.8 x 4.8 x 3
744043005 5.6 1.4 1.3 70.00 4.8 x 4.8 x 3
744043006 6.8 1.3 1.3 80.00 4.8 x 4.8 x 3
744045006 6.8 1.1 1.6 160.00 4.5 x 3.2 x 2.9
744052005 5.0 1.7 1.8 50.00 5.8 x 5.8 x 2
744052006 6.2 1.5 1.6 70.00 5.8 x 5.8 x 2
744053006 6.2 2.2 1.7 40.00 5.8 x 5.8 x 3
744062006 6.2 1.9 1.8 40.00 6.8 x 6.8 x 2.5
7440680047 4.7 1.9 1.6 72.00 8 x 8 x 1.2
7440680056 5.6 1.5 1.4 110.00 8 x 8 x 1.2
7440680068 6.8 1.4 1.2 127.00 8 x 8 x 1.2
7440690047 4.7 2.2 1.8 56.00 8 x 8 x 1.5
7440690068 6.8 1.8 1.7 88.00 8 x 8 x 1.5
7440700068 6.8 2.4 1.8 56.00 8 x 8 x 2
74438323047 4.7 0.9 1.8 338.00 2.5 x 2 x 1
74438323068 6.8 0.9 1.6 563.00 2.5 x 2 x 1
74438324056 5.6 1.0 1.8 405.00 2.5 x 2 x 1.2
74438324068 6.8 0.9 1.6 560.00 2.5 x 2 x 1.2
74479889247 4.7 0.9 0.9 400.00 2.5 x 2 x 1.2
78438323047 4.7 0.9 1.8 338.00 2.5 x 2 x 1
78438323068 6.8 0.9 1.6 563.00 2.5 x 2 x 1
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