MAX1945-1.8 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

MAX1945-1.8 is a 5.50 V non-sync Buck Converter from with 6.00 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 1.00 µH, a typical external component count of 8 and achieves a peak efficiency of 95 %. Further MAX1945-1.8 characteristics are a fixed 500 kHz switching frequency and 1 available package option(s): TSSOP-EP-28 .

For the MAX1945-1.8 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. 2.60 V
V-IN max. 5.50 V
I-OUT? 6.00 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 non-sync
Frequency typ. 500 kHz
Frequency fixed
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 400 kHz
Frequency adj./ ext.clock max 600 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 20000 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ. 165 °C
Inductor size typ. 1.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 95 %
Component count min. 8
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP TSSOP-EP-28
DIP
TO
DDPAK

MAX1945-1.8 Datasheet

Link to the most up-to-date MAX1945-1.8 datasheet and the product page for EVM, tools and support information.

MAX1945-1.8

MAX1945-1.8 Sample stock and distributor price breaks

MAX1945-1.8 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 6

AVNET-EUROPE (1)

ProductStockPriceBuy
MAX1945REUI+0Buy Now
MAX1945REUI+36Buy Now
MAX1945REUI+T0Buy Now
MAX1945SEUI+0Buy Now
MAX1945SEUI+T0Buy Now

DIGI-KEY (2)

ProductStockPriceBuy
MAX1945REUI+97
112.50 USD
1011.88 USD
258.66 USD
508.23 USD
1005.77 USD
2505.72 USD
Buy Now
MAX1945SEUI+100
112.51 USD
1011.88 USD
258.66 USD
508.23 USD
1005.77 USD
Buy Now
MAX1945SEUI+T0
25004.24 USD
Buy Now
MAX1945REUI+T0
25004.25 USD
Buy Now

Element14 (1)

ProductStockPriceBuy
MAX1945REUI+10
119.52 USD
1018.59 USD
2513.73 USD
5013.09 USD
1009.34 USD
2509.25 USD
20008.86 USD
Buy Now

FARNELL-ELEMENT14 (1)

ProductStockPriceBuy
MAX1945REUI+10Buy Now

Mouser-Electronics (2)

ProductStockPriceBuy
MAX1945REUI+54
112.07 USD
1011.49 USD
258.50 USD
508.10 USD
1005.83 USD
Buy Now
MAX1945SEUI+41
112.51 USD
1011.87 USD
258.66 USD
508.23 USD
1005.83 USD
Buy Now
MAX1945REUI+TNone
25004.51 USD
Buy Now
MAX1945SEUI+TNone
25004.49 USD
Buy Now

NEWARK (1)

ProductStockPriceBuy
MAX1945REUI+10
112.56 USD
1011.91 USD
258.76 USD
508.34 USD
1005.98 USD
2505.89 USD
20005.80 USD
Buy Now

Available Distributors without stock: 1

AVNET-AMERICAS (0)

ProductStockPriceBuy
MAX1945REUI+0
16.57 USD
106.48 USD
256.39 USD
506.30 USD
1006.05 USD
Buy Now
MAX1945REUI/GG80
00.00 USD
Buy Now
MAX1945REUI/GH90
00.00 USD
Buy Now
MAX1945REUI+T0
25004.45 USD
50004.43 USD
100004.42 USD
150004.41 USD
250004.39 USD
Buy Now
MAX1945SEUI+0
1006.56 USD
2006.30 USD
3006.05 USD
5005.82 USD
10005.72 USD
Buy Now
MAX1945SEUI+T0
25005.06 USD
50004.85 USD
100004.66 USD
150004.49 USD
250004.41 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with MAX1945 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to MAX1945-1.8. Optional, compare MAX1945-1.8 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 MAX1945-1.8.

V-IN max. 5.5 V, I-OUT 6 A, V-OUT min. 1.8 V, Frequency typ. 500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744040630082 0.8 6.0 9.5 10.00 6 x 6 x 2.8
74404063012 1.2 6.2 8.5 11.00 6 x 6 x 2.8
74404084010 1.0 6.3 13.5 8.00 8 x 8 x 4.2
744065001 1.0 8.0 9.5 4.90 10 x 10 x 3.1
7440710082 0.8 7.3 8.0 7.00 8 x 8 x 4.6
744310095 1.0 11.0 13.0 6.20 7 x 6.9 x 3.3
744310115 1.2 8.5 13.0 8.60 7 x 6.9 x 3.3
744314110 1.1 15.0 13.0 3.15 7 x 6.9 x 5
744316100 1.0 11.5 11.5 4.75 5.5 x 5.3 x 4.3
744323120 1.2 12.0 15.0 6.60 10.6 x 10.6 x 3.1
74437336010 1.0 7.5 11.0 13.00 5.7 x 5.2 x 3
74438356010 1.0 7.2 9.0 12.00 4.1 x 4.1 x 2.1
7447462010 1.0 8.5 8.0 6.00 5.5 x 5.5 x 8.5
7447471013 1.3 8.5 14.0 6.00 10.5 x 10.5 x 11.5
7447715910 1.0 8.5 13.9 5.50 12 x 12 x 4.5
744772010 1.0 7.5 10.0 4.70 7.8 x 7.8 x 10
744777001 1.0 6.8 10.2 8.40 7.3 x 7.3 x 4.5
7447797110 1.1 11.2 16.0 5.90 10.2 x 10.2 x 4.5
7447798110 1.1 16.5 16.0 3.00 10.2 x 10.2 x 6.4
784775012 1.2 6.2 8.0 5.00 7 x 7.8 x 5.5
784776012 1.2 7.4 11.0 4.00 9 x 10 x 5.9
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