LTC3421 Boost Converter Overview

Description

Manufacturer
 
Category
Sub-Category

LTC3421 is a 5.25 V, 4.20 A switch current limit sync Boost Converter from . The input voltage from 0.88 V to 4.50 V  can be boosted into an output voltage ranging from 2.40 V to 5.25 V.

Features of the Boost Converter are adjustable 1000 kHz switching frequency, a typical inductor size of 4.7 µH and it offers a peak efficiency of  up to 96 %. The minimum external component count is 13 and LTC3421 is available in 1 package option(s): QFN-24 .

For LTC3421 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. 0.88 V
V-IN max. 4.50 V
Current-Limit typ.? 4.20 A
V-OUT min. 2.40 V
V-OUT max. 5.25 V
VOUT adjustable
VOUT programmable no
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency adjustable adjustable
Frequency selectable
Frequency adj. min. 100 kHz
Frequency adj. max. 3000 kHz
extern clock sync. yes
Softstart yes
Softstart adjustable yes
Tracking no
PG/Power OK no
LBI/LBO yes
Frequency sync. min. 100 kHz
Frequency sync. max. 3000 kHz
Down Mode no
Quiescent current max. 1100 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 4.7 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Boost
Peak Efficiency 96 %
Component count min. 13
current limit adjustable yes
Nr.of package options 1
CSP
SC70
SOT
MSOP
QFN/DFN QFN-24
SO/SOIC
SOP
DIP
TO
DDPAK

LTC3421 Datasheet

Link to the most up-to-date LTC3421 datasheet and the product page for EVM, tools and support information.

LTC3421

LTC3421 Price breaks and distributor sample stock

LTC3421 prices and available online distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 3

Chip One Stop (1)

ProductStockPriceBuy
LTC3421EUF#PBF43
16.78 USD
104.81 USD
254.73 USD
Buy Now

Digi-Key (1)

ProductStockPriceBuy
DC565A3
1170.17 USD
25128.14 USD
Buy Now
LTC3421EUF#PBF0
17.18 USD
255.10 USD
1004.20 USD
Buy Now
LTC3421EUF#TRPBF0
25004.30 USD
Buy Now

RS Components (1)

ProductStockPriceBuy
LTC3421EUF#PBF33Buy Now

Available Distributors without stock: 3

Element14 (0)

ProductStockPriceBuy
LTC3421EUF#PBF0Buy Now

Farnell Element14 (0)

ProductStockPriceBuy
LTC3421EUF#PBF0Buy Now

Rutronik (0)

ProductStockPriceBuy
nnBuy Now

Available Distributors with stock: 6

Digi-Key

ProductStockPriceBuy
DC565A 3
25112.04 €
1148.80 €
Buy Now
LTC3421EUF#PBF 0
1003.67 €
254.46 €
16.28 €
Buy Now
LTC3421EUF#TRPBF 0
25003.76 €
Buy Now
show stock=0hide stock=0

Mouser Electronics

ProductStockPriceBuy
LTC3421EUF#PBF 178
17.19 $
106.59 $
255.10 $
1004.20 $
Buy Now
LTC3421EUF#TRPBF 0
18.28 $
107.68 $
257.38 $
1005.17 $
2504.73 $
25004.30 $
Buy Now
LTC3421EUF 0 Buy Now
LTC3421EUF#TR 0 Buy Now
show stock=0hide stock=0

America II Electronics

ProductStockPriceBuy
LTC3421EUF#TRPBF 7033 Buy Now

ComS.I.T.

ProductStockPriceBuy
LTC3421EUFPBF 91

Chip1Stop

ProductStockPriceBuy
LTC3421EUF#PBF 43
254.73 $
104.81 $
16.78 $
Buy Now

RS Components

ProductStockPriceBuy
LTC3421EUF#PBF 33
184.67 GBP
464.35 GBP
Buy Now

Available Distributors without stock: 1

Arrow Electronics

ProductStockPriceBuy
LTC3421EUF#TRPBF 0
1004.22 $
Buy Now
LTC3421EUF#TRPBF 0
1004.22 $
Buy Now
LTC3421EUF#PBF 0
1004.12 $
15.00 $
Buy Now

Alternatives and equivalents

The following DC/DC Boost Converter are similar to LTC3421. Optional, compare LTC3421 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 LTC3421.

V-IN min. 0.88 V, Current-Limit typ. 4.2 A, V-OUT max. 5.25 V, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744302007 0.1 30.0 60.0 0.24 6.95 x 6.8 x 4.7
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