LTC3440 Buck-Boost Converter Overview

Description

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LTC3440 is a 5.50 V, 0.60 A output current sync Buck-Boost Converter from . The 2.50 V to 5.50 V input range can be converted into a 2.50 V to 5.50 V output voltage.

The Buck-Boost Converter features fixed 1000 kHz switching frequency, requires a typical inductor size of 10.0 µH and provides a peak efficiency of 96 %. LTC3440 circuitry consists typically of 8 external components and is available in 2 package option(s): MSOP-10 DFN-10 .

For LTC3440 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. 2.50 V
V-IN max. 5.50 V
I-OUT? 0.60 A
V-OUT min. 2.50 V
V-OUT max. 5.50 V
V-OUT fixed adjustable
V-OUT programmable no
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency adjustable fixed
Frequency adjustable min.
Frequency adjustable max.
ext.clock sync yes
Frequency sync. min. 300 kHz
Frequency sync. max. 2000 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 1000 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 10.0 µH
Automotive AEC-Q100 no
Light-Load Mode yes
Topology Buck-Boost
Peak Efficiency 96 %
Component count min. 8
current limit adjustable no
LBI/LBO no
Nr. of package options 2
CSP
SOT
MSOP MSOP-10
QFN DFN-10
SO/SOIC
SOP

Charts and pictures

LTC3440 position within the market

LTC3440 Datasheet

Link to the most up-to-date LTC3440 datasheet and the product page for EVM, tools and support information.

LTC3440

LTC3440 Distributor price breaks and sample stock

LTC3440 prices and available buy online distributors. Optional, check regional sources for price and inventory: for Russia via efind, for South Korea via ICPart, for Japan via ICBAIBAI, for China via IC5858 or International via IC2IC.

OEMSecrets.com
findchips.com

Available Distributors with stock: 0

no online Distributor with LTC3440 stock available

Available Distributors with stock: 0

no online Distributor with LTC3440 stock available

Equivalents and alternatives

The following Buck-Boost DC/DC Converter are similar to LTC3440. Optional, compare LTC3440 side-by-side with other selected Buck-Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ISL9110 ISL9110 product overviewISL9110 product overview Intersil DFN-12
0% ISL9112 ISL9112 product overviewISL9112 product overview Intersil DFN-12
0% LTC3441 LTC3441 product overviewLTC3441 product overview Linear Technology DFN-12
0% LTC3442 LTC3442 product overviewLTC3442 product overview Linear Technology DFN-12
0% LTC3443 LTC3443 product overviewLTC3443 product overview Linear Technology DFN-12
0% LTC3530 LTC3530 product overviewLTC3530 product overview Linear Technology MSOP-10, DFN-10
0% TPS63000 TPS63000 product overviewTPS63000 product overview Texas Instruments QFN-10
0% TPS63000-Q1 TPS63000-Q1 product overviewTPS63000-Q1 product overview Texas Instruments QFN-10
0% TPS63010 TPS63010 product overviewTPS63010 product overview Texas Instruments CSP-20
0% TPS63030 TPS63030 product overviewTPS63030 product overview Texas Instruments QFN-10
0% TPS63036 TPS63036 product overviewTPS63036 product overview Texas Instruments WLCSP-8, VQFN-12
0% TPS63060 TPS63060 product overviewTPS63060 product overview Texas Instruments SON-10
0% TPS63060-EP TPS63060-EP product overviewTPS63060-EP product overview Texas Instruments SON-10
0% ISL9110A ISL9110A product overviewISL9110A product overview Intersil CSP-20
10% ADP2503 ADP2503 product overviewADP2503 product overview Analog Devices QFN-10
10% ADP2504 ADP2504 product overviewADP2504 product overview Analog Devices QFN-10

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3440.

V-IN max. 5.5 V, I-OUT 0.6 A, V-OUT min. 2.5 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025006 6.8 1.1 1.3 142.00 2.8 x 2.8 x 3
744029004 4.7 1.0 0.8 170.00 2.8 x 2.8 x 1.5
744031004 4.7 1.2 0.9 90.00 3.8 x 3.8 x 1.8
744031006 6.8 0.9 0.8 135.00 3.8 x 3.8 x 1.8
74404024047 4.7 1.1 1.2 175.00 2.5 x 2 x 1.2
74404024068 6.8 0.9 1.0 300.00 2.5 x 2 x 1.2
74404032047 4.7 1.3 1.2 96.00 3 x 3 x 1.5
74404032068 6.8 1.2 0.9 120.00 3 x 3 x 1.5
744042005 5.6 1.6 1.4 80.00 4.8 x 4.8 x 2
744042006 6.8 1.5 1.3 80.00 4.8 x 4.8 x 2
744043005 5.6 1.4 1.3 70.00 4.8 x 4.8 x 3
744043006 6.8 1.3 1.3 80.00 4.8 x 4.8 x 3
744052007 7.5 1.4 1.5 70.00 5.8 x 5.8 x 2
7440680056 5.6 1.5 1.4 110.00 8 x 8 x 1.2
7440680068 6.8 1.4 1.2 127.00 8 x 8 x 1.2
74479889247 4.7 0.9 0.9 400.00 2.5 x 2 x 1.2
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