ACT4303 Buck Converter overview

Description

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ACT4303 is a 30.00 V non-sync Buck Converter from with 3.00 A output current. The maximum 30.00 V input voltage can be regulated down into a 0.82 V to 12.00 V output voltage.

It requires are a typical inductor size of 30.00 µH, a typical external component count of 10 and achieves a peak efficiency of 94 %. Further ACT4303 characteristics are a fixed 225 kHz switching frequency and 1 available package option(s): SOP-8 .

For the ACT4303 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. 10.00 V
V-IN max. 30.00 V
I-OUT? 3.00 A
V-OUT min. 0.82 V
V-OUT max. 12.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 225 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. 1400 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ. 150 °C
Inductor size typ. 30.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 94 %
Component count min. 10
current limit adjustable yes
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP SOP-8
DIP
TO
DDPAK

ACT4303 Datasheet

Link to the most up-to-date ACT4303 datasheet and the product page for EVM, tools and support information.

ACT4303

ACT4303 Sample stock and distributor price breaks

ACT4303 prices and online available distributors.

OEMSecrets.com
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Available Distributors with stock: 0

no online Distributor with ACT4303 stock available

Available Distributors without stock: 2

DIGI-KEY (0)

ProductStockPriceBuy
ACT4303YH-T0
40000.38 USD
Buy Now
EA4303YH0
10.00 USD
Buy Now

Mouser-Electronics (0)

ProductStockPriceBuy
ACT4303YH-TNoneBuy Now

Available Distributors with stock: 0

no online Distributor with ACT4303 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to ACT4303. Optional, compare ACT4303 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ACT4523 ACT4523 product overviewACT4523 product overview Active Semi SOP-8EP
0% ACT4523A ACT4523A product overviewACT4523A product overview Active Semi SOP-8EP
0% ACT4533 ACT4533 product overviewACT4533 product overview Active Semi SOP-8EP
0% ACT4533A ACT4533A product overviewACT4533A product overview Active Semi SOP-8EP
0% ACT4533B ACT4533B product overviewACT4533B product overview Active Semi SOP-8EP
50% ACT4513 ACT4513 product overviewACT4513 product overview Active Semi SOP-8
50% ACT4514 ACT4514 product overviewACT4514 product overview Active Semi SOP-8
50% ACT4515 ACT4515 product overviewACT4515 product overview Active Semi SOP-8
50% LM22673 LM22673 product overviewLM22673 product overview Texas Instruments TO263-7, SO-8
50% LM2673 LM2673 product overviewLM2673 product overview Texas Instruments DDPAK-7, TO-220-7, VSON-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of ACT4303.

V-IN max. 30 V, I-OUT 3 A, V-OUT min. 0.82 V, Frequency typ. 225 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404054033 3.3 3.4 4.3 24.00 5 x 5 x 4
74404054047 4.7 3.0 3.8 30.00 5 x 5 x 4
74404063033 3.3 3.5 4.5 25.00 6 x 6 x 2.8
74404064033 3.3 3.7 6.5 21.00 6 x 6 x 4.5
74404064047 4.7 3.3 5.5 26.00 6 x 6 x 4.5
74404084033 3.3 4.4 7.1 17.00 8 x 8 x 4.2
74404084047 4.7 4.1 6.5 19.00 8 x 8 x 4.2
7440650033 3.3 5.3 4.7 15.00 10 x 10 x 3.1
7440650047 4.7 4.6 4.2 16.50 10 x 10 x 3.1
7440660035 3.5 5.8 6.4 11.50 10 x 10 x 4.1
744066005 5.0 4.9 5.5 14.50 10 x 10 x 4.1
744071039 3.9 4.9 4.5 13.00 8 x 8 x 4.6
744071047 4.7 4.8 4.3 17.00 8 x 8 x 4.6
744311470 4.7 6.0 7.0 19.50 7 x 6.9 x 4
744314490 4.9 6.5 6.5 14.50 7 x 6.9 x 5
744316330 3.3 5.8 5.8 18.50 5.5 x 5.3 x 4.3
744316470 4.7 4.6 4.7 24.50 5.5 x 5.3 x 4.3
74437336047 4.7 3.5 7.0 50.00 5.7 x 5.2 x 3
74438356033 3.3 3.6 5.5 39.90 4.1 x 4.1 x 2.1
7447462033 3.3 4.7 4.0 16.00 5.5 x 5.5 x 8.5
7447462047 4.7 4.2 3.7 19.00 5.5 x 5.5 x 8.5
7447471047 4.7 6.9 6.0 10.50 10.5 x 10.5 x 11.5
7447713033 3.3 4.6 7.2 20.40 10 x 10 x 3
7447713047 4.7 4.0 6.0 26.00 10 x 10 x 3
7447715003 3.3 5.9 7.1 11.50 12 x 12 x 4.5
7447715004 4.7 5.2 6.3 13.50 12 x 12 x 4.5
744772033 3.3 5.0 6.3 9.50 7.8 x 7.8 x 10
744772047 4.7 4.0 5.4 11.60 7.8 x 7.8 x 10
744777003 3.3 3.5 4.6 25.00 7.3 x 7.3 x 4.5
744777004 4.7 3.2 4.0 25.00 7.3 x 7.3 x 4.5
7447779003 3.3 3.3 4.5 26.00 7.3 x 7.3 x 4.5
7447779004 4.7 3.2 4.4 28.00 7.3 x 7.3 x 4.5
744778003 3.3 3.1 4.1 24.00 7.3 x 7.3 x 3.4
7447789003 3.3 3.4 4.2 24.00 7.3 x 7.3 x 3.5
744787039 3.9 3.8 4.0 16.70 7.8 x 7 x 5
744787047 4.7 3.3 3.6 24.30 7.8 x 7 x 5
784774047 4.7 3.0 5.5 56.00 5.2 x 5.8 x 4.85
784775033 3.3 4.9 4.9 12.00 7 x 7.8 x 5.5
784775047 4.7 4.5 4.5 16.00 7 x 7.8 x 5.5
784776033 3.3 6.0 7.0 9.00 9 x 10 x 5.9
784776047 4.7 5.0 6.0 12.00 9 x 10 x 5.9
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