LTC3605A Buck Converter overview

Description

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LTC3605A is a 20.00 V sync Buck Converter from with 5.00 A output current. The maximum 20.00 V input voltage can be regulated down into a 0.60 V to 19.80 V output voltage.

It requires are a typical inductor size of 1.00 µH, a typical external component count of 12 and achieves a peak efficiency of 95 %. Further LTC3605A characteristics are a adjustable 1000 kHz switching frequency and 1 available package option(s): QFN-24 .

For the LTC3605A 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. 4.00 V
V-IN max. 20.00 V
I-OUT? 5.00 A
V-OUT min. 0.60 V
V-OUT max. 19.80 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency adjustable
Frequency selectable
ext.clock sync. yes
Frequency adj./ ext.clock min. 800 kHz
Frequency adj./ ext.clock max 4000 kHz
Softstart yes
Softstart adjustable yes
Tracking yes
PG/Power OK yes
Quiescent current max. 5000 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 160 °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. 12
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-24
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3605A Datasheet

Link to the most up-to-date LTC3605A datasheet and the product page for EVM, tools and support information.

LTC3605A

LTC3605A Sample stock and distributor price breaks

LTC3605A prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LTC3605A stock available

Available Distributors with stock: 0

no online Distributor with LTC3605A stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC3605A. Optional, compare LTC3605A side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
10% IR3856M IR3856M product overviewIR3856M product overview IRF PQFN-17
10% IR3856WM IR3856WM product overviewIR3856WM product overview IRF PQFN-17
25% IR3853M IR3853M product overviewIR3853M product overview IRF PQFN-17
25% LT3690 LT3690 product overviewLT3690 product overview Linear Technology QFN-26
25% LTC3605 LTC3605 product overviewLTC3605 product overview Linear Technology QFN-24
25% TPS54623 TPS54623 product overviewTPS54623 product overview Texas Instruments QFN-14
25% TPS54521 TPS54521 product overviewTPS54521 product overview Texas Instruments VQFN-14
50% LTC3603 LTC3603 product overviewLTC3603 product overview Linear Technology QFN-16, MSOP-16
50% LTC3604 LTC3604 product overviewLTC3604 product overview Linear Technology QFN-16, MSOP-16
50% LTC3626 LTC3626 product overviewLTC3626 product overview Linear Technology QFN-20

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3605A.

V-IN max. 20 V, I-OUT 5 A, V-OUT min. 0.6 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74407000047 0.5 7.8 6.5 5.80 8 x 8 x 2
744373210047 0.5 5.4 9.0 18.00 4.45 x 4.06 x 1.2
744383360033 0.3 5.5 8.3 14.00 3 x 3 x 2
744383560033 0.3 9.6 12.4 6.00 4.1 x 4.1 x 2.1
744778005 0.5 5.6 9.0 7.20 7.3 x 7.3 x 3.4
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