R1225N-12-B Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

R1225N-12-B is a 1 channel, 1 phase non-sync Buck Controller. The maximum input voltage ranges from 2.30 V to 18.50 V and output current goes up to 2.00 A.

The Controller features fixed 500 kHz switching frequency which results in a typical inductor size of 10.0 uH and a peak efficiency of 94 %. The R1225N-12-B is available in 1 package option(s): SOT23-5 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 2.30 V
V-IN max. 18.50 V
I-OUT? 2.00 A
V-OUT min. 1.20 V
V-OUT max. 1.20 V
V-OUT 1
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 500 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. no
ext.clock Frequency min.
ext.clock Frequency max.
Softstart yes
Softstart adjustable no
Tracking no
Power Good (PG) no
Enable no
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 10.0 uH
Automotive AEC-Q100 no
Light-Load Mode yes
Single/ Multiphase single
Nr. of Phases 1
Peak Efficiency 94 %
component count min. 8
current limit adjustable no
Nr.of package options 1
CSP
SOT SOT23-5
MSOP
QFN/DFN
SO/SOIC
SOP
DIP

R1225N-12-B Datasheet

Link to the most up-to-date R1225N-12-B datasheet and the product page for EVM, tools and support information.

R1225N-12-B

R1225N-12-B inventory, samples and price

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Available Distributors with stock: 0

no online Distributor with R1225N stock available

Available Distributors without stock: 2

Rutronik (0)

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Table with equivalents and alternatives

The following Buck Controller are similar to R1225N-12-B. Or, compare R1225N-12-B side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% R1224N-12-E R1224N-12-E product overviewR1224N-12-E product overview Ricoh SOT23-5
0% R1224N-12-F R1224N-12-F product overviewR1224N-12-F product overview Ricoh SOT23-5
0% R1224N-12-L R1224N-12-L product overviewR1224N-12-L product overview Ricoh SOT23-5
0% R1225N-12-A R1225N-12-A product overviewR1225N-12-A product overview Ricoh SOT23-5
0% R1225N-12-J R1225N-12-J product overviewR1225N-12-J product overview Ricoh SOT23-5

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of R1225N-12-B.

V-IN max. 18.5 V, I-OUT 2 A, V-OUT min. 1.2 V, Frequency typ. 500 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404042033 3.3 2.0 2.9 55.00 4 x 4 x 1.8
74404052033 3.3 2.6 3.0 42.20 5 x 5 x 2
74404052039 3.9 2.4 2.8 50.50 5 x 5 x 2
74404054033 3.3 3.4 4.3 24.00 5 x 5 x 4
74404063033 3.3 3.5 4.5 25.00 6 x 6 x 2.8
744052002 2.5 2.4 2.7 20.00 5.8 x 5.8 x 2
744052003 3.0 2.2 2.4 40.00 5.8 x 5.8 x 2
744053002 2.6 3.0 2.7 20.00 5.8 x 5.8 x 3
744053003 3.0 2.8 2.5 20.00 5.8 x 5.8 x 3
744062003 3.3 2.8 2.5 20.00 6.8 x 6.8 x 2.5
7440650033 3.3 5.3 4.7 15.00 10 x 10 x 3.1
7440700033 3.3 3.2 2.6 30.00 8 x 8 x 2
744071039 3.9 4.9 4.5 13.00 8 x 8 x 4.6
74408942033 3.3 2.1 3.5 48.30 4.8 x 4.8 x 3.1
74408943033 3.3 2.6 3.6 31.00 4.8 x 4.8 x 4.1
74437321033 3.3 2.3 3.9 84.00 4.45 x 4.06 x 1.2
74437324033 3.3 2.5 4.2 69.00 4.45 x 4.06 x 2
74438336033 3.3 2.2 4.3 99.00 3 x 3 x 2
7447462033 3.3 4.7 4.0 16.00 5.5 x 5.5 x 8.5
744773027 2.7 2.3 3.0 39.00 4 x 4.5 x 3.5
744773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
744777003 3.3 3.5 4.6 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
744778003 3.3 3.1 4.1 24.00 7.3 x 7.3 x 3.4
7447785003 3.3 2.8 3.0 43.00 5.9 x 6.2 x 3.3
7447789003 3.3 3.4 4.2 24.00 7.3 x 7.3 x 3.5
744787027 2.7 4.4 4.5 13.50 7.8 x 7 x 5
744787039 3.9 3.8 4.0 16.70 7.8 x 7 x 5
784773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
784777033 3.3 2.5 4.7 58.00 7.3 x 7.3 x 4.3
784778033 3.3 2.7 3.7 54.00 7.3 x 7.3 x 3.5
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