RT2858B Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

RT2858B is a 18.00 V sync Buck Converter from with 3.00 A output current. The maximum 18.00 V input voltage can be regulated down into a 0.77 V to 7.00 V output voltage.

It requires are a typical inductor size of 1.40 µH, a typical external component count of 9 and achieves a peak efficiency of 95 %. Further RT2858B characteristics are a fixed 650 kHz switching frequency and 1 available package option(s): PSOP-8 .

For the RT2858B 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. 4.50 V
V-IN max. 18.00 V
I-OUT? 3.00 A
V-OUT min. 0.77 V
V-OUT max. 7.00 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 650 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK yes
Quiescent current max. 1300 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 1.40 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 95 %
Component count min. 9
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP PSOP-8
DIP
TO
DDPAK

RT2858B Datasheet

Link to the most up-to-date RT2858B datasheet and the product page for EVM, tools and support information.

RT2858B

RT2858B Sample stock and distributor price breaks

RT2858B prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with RT2858B stock available

Available Distributors with stock: 3

Digi-Key

ProductStockPriceBuy
RT2858BHGSP 2996
10000.96 €
5001.16 €
2501.32 €
1001.41 €
251.65 €
101.75 €
11.96 €
Buy Now
RT2858BHGSP 2996
10000.96 €
5001.16 €
2501.32 €
1001.41 €
251.65 €
101.75 €
11.96 €
Buy Now
RT2858BHGSP 0 Buy Now
show stock=0hide stock=0

element14 Asia-Pacific

ProductStockPriceBuy
RT2858BHGSP 0
10001.61 SGD
5001.94 SGD
2502.21 SGD
1002.49 SGD
252.77 SGD
103.10 SGD
13.43 SGD
Buy Now
RT2858BHGSP 500
12.64 SGD
Buy Now
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Farnell element14

ProductStockPriceBuy
RT2858BHGSP 250
25000.82 GBP
10000.94 GBP
5001.13 GBP
2501.29 GBP
1001.46 GBP
501.54 GBP
251.62 GBP
12.05 GBP
Buy Now
RT2858BHGSP 0
25000.82 GBP
10000.94 GBP
5001.13 GBP
2501.29 GBP
1001.46 GBP
501.54 GBP
251.62 GBP
12.05 GBP
Buy Now
show stock=0hide stock=0

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to RT2858B. Optional, compare RT2858B side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% AP6508 AP6508 product overviewAP6508 product overview Diodes DFN-14
0% MAX15041 MAX15041 product overviewMAX15041 product overview Maxim TQFN-EP-16
0% MP28253 MP28253 product overviewMP28253 product overview MPS QFN-14
0% MP28255 MP28255 product overviewMP28255 product overview MPS QFN-14
0% LM20323 LM20323 product overviewLM20323 product overview Texas Instruments HTSSOP-20
0% LM20333 LM20333 product overviewLM20333 product overview Texas Instruments HTSSOP-20
0% RT2853A RT2853A product overviewRT2853A product overview Richtek WQFN-16
0% RT2853B RT2853B product overviewRT2853B product overview Richtek WQFN-16
0% RT7231 RT7231 product overviewRT7231 product overview Richtek TSSOP-14, WDFN-10
0% RT7232 RT7232 product overviewRT7232 product overview Richtek TSSOP-14, WDFN-10
0% RT7233 RT7233 product overviewRT7233 product overview Richtek PSOP-8
0% RT7234 RT7234 product overviewRT7234 product overview Richtek PSOP-8
0% RT7235 RT7235 product overviewRT7235 product overview Richtek TSSOP-14, WDFN-10
0% RT7236 RT7236 product overviewRT7236 product overview Richtek TSSOP-14, WDFN-10
0% RT7239 RT7239 product overviewRT7239 product overview Richtek PSOP-8
0% RT7240 RT7240 product overviewRT7240 product overview Richtek PSOP-8
10% MAX15066 MAX15066 product overviewMAX15066 product overview Maxim WLP-16
10% MAX15166 MAX15166 product overviewMAX15166 product overview Maxim WLP-16
10% MP2214 MP2214 product overviewMP2214 product overview MPS SOIC-8E, QFN-10
10% TPS62134A TPS62134A product overviewTPS62134A product overview Texas Instruments VQFN-16
10% TPS62134B TPS62134B product overviewTPS62134B product overview Texas Instruments VQFN-16
10% TPS62134C TPS62134C product overviewTPS62134C product overview Texas Instruments VQFN-16
10% TPS62134D TPS62134D product overviewTPS62134D product overview Texas Instruments VQFN-16
25% IR3822M IR3822M product overviewIR3822M product overview IRF PQFN-15
50% MP2209 MP2209 product overviewMP2209 product overview MPS QFN-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT2858B.

V-IN max. 18 V, I-OUT 3 A, V-OUT min. 0.765 V, Frequency typ. 650 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404042010 1.0 3.2 4.8 27.00 4 x 4 x 1.8
74404052010 1.0 3.9 5.5 19.80 5 x 5 x 2
74404052012 1.2 3.6 5.2 23.40 5 x 5 x 2
74404052015 1.5 3.3 4.9 25.70 5 x 5 x 2
74404054015 1.5 4.3 6.9 15.00 5 x 5 x 4
74404063010 1.0 5.2 7.5 10.00 6 x 6 x 2.8
74404063015 1.5 4.6 6.6 13.00 6 x 6 x 2.8
744062001 1.0 4.8 4.6 10.00 6.8 x 6.8 x 2.5
7440620015 1.5 4.3 4.0 10.00 6.8 x 6.8 x 2.5
7440650015 1.5 7.2 7.5 7.30 10 x 10 x 3.1
7440690010 1.0 3.6 3.8 21.00 8 x 8 x 1.5
7440700012 1.2 4.8 4.2 12.50 8 x 8 x 2
74408941010 1.0 3.0 5.4 29.50 4.8 x 4.8 x 2.1
74408942012 1.2 3.2 5.5 22.00 4.8 x 4.8 x 3.1
74408943010 1.0 3.3 6.5 19.00 4.8 x 4.8 x 4.1
74437321015 1.5 3.0 4.0 55.00 4.45 x 4.06 x 1.2
74438336010 1.0 4.0 5.0 26.00 3 x 3 x 2
74438336012 1.2 3.9 4.8 30.00 3 x 3 x 2
74438336015 1.5 3.7 4.5 33.00 3 x 3 x 2
7447730 1.0 4.0 5.7 14.00 4 x 4.5 x 3.5
744773014 1.4 3.4 5.0 22.00 4 x 4.5 x 3.5
74477790015 1.5 4.3 7.3 15.00 7.3 x 7.3 x 4.5
744778001 1.0 5.4 6.4 9.00 7.3 x 7.3 x 3.4
7447785001 1.0 3.5 4.5 31.00 5.9 x 6.2 x 3.3
7447786001 1.0 5.0 5.5 28.00 5.9 x 6.2 x 5.1
7447789001 1.0 5.4 6.4 10.00 7.3 x 7.3 x 3.5
744787012 1.2 4.9 6.0 8.50 7.8 x 7 x 5
74479299210 1.0 3.0 5.2 38.00 3.2 x 2.5 x 1.2
7847730 1.0 4.0 5.7 14.00 4 x 4.5 x 3.5
784778010 1.0 3.5 7.0 30.00 7.3 x 7.3 x 3.5
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