LTC3111 Buck-Boost Converter Overview

Description

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LTC3111 is a 15.00 V, 1.50 A output current sync Buck-Boost Converter from . The 2.50 V to 15.00 V input range can be converted into a 2.50 V to 15.00 V output voltage.

The Buck-Boost Converter features fixed 800 kHz switching frequency, requires a typical inductor size of 4.7 µH and provides a peak efficiency of 95 %. LTC3111 circuitry consists typically of 13 external components and is available in 2 package option(s): MSOP-16 DFN-14 .

For LTC3111 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. 15.00 V
I-OUT? 1.50 A
V-OUT min. 2.50 V
V-OUT max. 15.00 V
V-OUT fixed adjustable
V-OUT programmable no
sync/non-sync sync
Frequency typ. 800 kHz
Frequency adjustable fixed
Frequency adjustable min.
Frequency adjustable max.
ext.clock sync yes
Frequency sync. min. 1500 kHz
Frequency sync. max. 600 kHz
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 80 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 150 °C
thermal shutdown typ. 175 °C
Inductor size typ. 4.7 µH
Automotive AEC-Q100 no
Light-Load Mode yes
Topology Buck-Boost
Peak Efficiency 95 %
Component count min. 13
current limit adjustable no
LBI/LBO no
Nr. of package options 2
CSP
SOT
MSOP MSOP-16
QFN DFN-14
SO/SOIC
SOP

Charts and pictures

LTC3111 Datasheet

Link to the most up-to-date LTC3111 datasheet and the product page for EVM, tools and support information.

LTC3111

LTC3111 Distributor price breaks and sample stock

LTC3111 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
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Available Distributors with stock: 0

no online Distributor with LTC3111 stock available

Available Distributors with stock: 0

no online Distributor with LTC3111 stock available

Equivalents and alternatives

The following Buck-Boost DC/DC Converter are similar to LTC3111. Optional, compare LTC3111 side-by-side with other selected Buck-Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
25% TPS63060 TPS63060 product overviewTPS63060 product overview Texas Instruments SON-10
25% TPS63060-EP TPS63060-EP product overviewTPS63060-EP product overview Texas Instruments SON-10
25% TPS63070 TPS63070 product overviewTPS63070 product overview Texas Instruments QFN-15

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3111.

V-IN max. 15 V, I-OUT 1.5 A, V-OUT min. 2.5 V, Frequency typ. 800 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404041047 4.7 1.6 1.9 91.00 4 x 4 x 1.2
74404042047 4.7 1.7 2.2 70.00 4 x 4 x 1.8
74404052039 3.9 2.4 2.8 50.50 5 x 5 x 2
74404052047 4.7 2.3 2.7 55.90 5 x 5 x 2
74404052056 5.6 2.1 2.6 67.50 5 x 5 x 2
74404063047 4.7 3.1 3.3 30.00 6 x 6 x 2.8
7440520039 3.9 2.0 2.1 50.00 5.8 x 5.8 x 2
744052005 5.0 1.7 1.8 50.00 5.8 x 5.8 x 2
744053004 4.2 2.5 2.2 30.00 5.8 x 5.8 x 3
7440530047 4.7 2.4 2.0 30.00 5.8 x 5.8 x 3
744053005 5.3 2.3 1.9 30.00 5.8 x 5.8 x 3
744062005 5.0 2.2 2.0 40.00 6.8 x 6.8 x 2.5
7440690047 4.7 2.2 1.8 56.00 8 x 8 x 1.5
7440700047 4.7 3.0 2.2 37.00 8 x 8 x 2
7440700056 5.6 2.6 2.0 47.00 8 x 8 x 2
74408941035 3.5 1.5 2.8 113.00 4.8 x 4.8 x 2.1
74408942047 4.7 1.6 2.9 86.80 4.8 x 4.8 x 3.1
74408943047 4.7 2.2 3.2 45.00 4.8 x 4.8 x 4.1
74437321047 4.7 1.9 3.3 128.00 4.45 x 4.06 x 1.2
74437321056 5.6 1.6 2.7 180.00 4.45 x 4.06 x 1.2
74438335047 4.7 1.5 2.8 141.00 3 x 3 x 1.5
744773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
744773047 4.7 1.8 2.5 59.00 4 x 4.5 x 3.5
744773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
7447785004 4.7 2.2 2.5 60.00 5.9 x 6.2 x 3.3
7447786004 4.7 2.8 2.8 57.00 5.9 x 6.2 x 5.1
744787047 4.7 3.3 3.6 24.30 7.8 x 7 x 5
78438335047 4.7 1.5 2.8 141.00 3 x 3 x 1.5
784773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
784773047 4.7 1.8 2.5 59.00 4 x 4.5 x 3.5
784773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
784778047 4.7 2.4 3.1 66.00 7.3 x 7.3 x 3.5
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