RT8540A Boost Converter Overview

Description

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RT8540A is a 5.45 V, 4.00 A switch current limit sync Boost Converter from . The input voltage from 2.80 V to 5.50 V  can be boosted into an output voltage ranging from 3.83 V to 5.45 V.

Features of the Boost Converter are fixed 2000 kHz switching frequency, a typical inductor size of 2.2 µH and it offers a peak efficiency of  up to 94 %. The minimum external component count is 3 and RT8540A is available in 1 package option(s): WQFN-20 .

For RT8540A replacement search, 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. 2.80 V
V-IN max. 5.50 V
Current-Limit typ.? 4.00 A
V-OUT min. 3.83 V
V-OUT max. 5.45 V
VOUT adjustable
VOUT programmable yes
sync/non-sync sync
Frequency typ. 2000 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK yes
LBI/LBO no
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 700 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. 2.2 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Boost
Peak Efficiency 94 %
Component count min. 3
current limit adjustable no
Nr.of package options 1
CSP
SC70
SOT
MSOP
QFN/DFN WQFN-20
SO/SOIC
SOP
DIP
TO
DDPAK

RT8540A Datasheet

Link to the most up-to-date RT8540A datasheet and the product page for EVM, tools and support information.

RT8540A

RT8540A Price breaks and distributor sample stock

RT8540A prices and available online distributors.

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Available Distributors with stock: 0

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Alternatives and equivalents

The following DC/DC Boost Converter are similar to RT8540A. Optional, compare RT8540A side-by-side with other Boost 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 RT8540A.

V-IN min. 2.8 V, Current-Limit typ. 4 A, V-OUT max. 5.45 V, Frequency typ. 2000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744303022 0.2 31.0 32.0 0.33 10 x 6.8 x 5
744304016 0.2 26.0 32.0 0.17 11.5 x 11.8 x 4
744304022 0.2 26.0 23.0 0.17 11.5 x 11.8 x 4
744306025 0.3 26.0 32.0 0.30 10.5 x 10.3 x 5.5
744307022 0.2 29.0 29.0 0.33 7.4 x 7.2 x 7.2
744311022 0.2 21.0 32.0 1.10 7 x 6.9 x 4
744314024 0.2 20.0 28.0 1.00 7 x 6.9 x 5
744316022 0.2 20.0 25.0 1.25 5.5 x 5.3 x 4.3
744373240022 0.2 9.5 17.0 6.60 4.45 x 4.06 x 2
7447797022 0.2 16.0 32.0 2.90 10.2 x 10.2 x 4.5
7447798022 0.2 19.0 20.0 1.60 10.2 x 10.2 x 6.4
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