LTC1779 Buck Converter overview

Description

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Category
Sub-Category

LTC1779 is a 9.80 V non-sync Buck Converter from with 0.25 A output current. The maximum 9.80 V input voltage can be regulated down into a 0.80 V to 9.80 V output voltage.

It requires are a typical inductor size of 22.00 µH, a typical external component count of 10 and achieves a peak efficiency of 94 %. Further LTC1779 characteristics are a fixed 550 kHz switching frequency and 1 available package option(s): TSOT23 .

For the LTC1779 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. 2.50 V
V-IN max. 9.80 V
I-OUT? 0.25 A
V-OUT min. 0.80 V
V-OUT max. 9.80 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 550 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart no
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 240 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min.
Junction max.
thermal shutdown typ. 170 °C
Inductor size typ. 22.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 94 %
Component count min. 10
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT TSOT23
MSOP
QFN/DFN
SO/SOIC
SOP
DIP
TO
DDPAK

LTC1779 Datasheet

Link to the most up-to-date LTC1779 datasheet and the product page for EVM, tools and support information.

LTC1779

LTC1779 Sample stock and distributor price breaks

LTC1779 prices and online available distributors.

OEMSecrets.com
findchips.com

Available Distributors with stock: 5

ARROW-NAC (2)

ProductStockPriceBuy
LTC1779ES6#TRMPBF500
5002.00 USD
Buy Now
LTC1779ES6#TRMPBF251
12.33 USD
1002.00 USD
Buy Now

Chip-One-Stop (2)

ProductStockPriceBuy
LTC1779ES6#TRMPBF451
14.66 USD
104.48 USD
503.21 USD
1003.16 USD
2002.92 USD
Buy Now
LTC1779ES6#TRMPBF500
5002.57 USD
Buy Now

DIGI-KEY (4)

ProductStockPriceBuy
LTC1779ES6#TRMPBF1000
5002.00 USD
Buy Now
LTC1779ES6#TRMPBF1021
14.47 USD
253.99 USD
1002.40 USD
2502.20 USD
Buy Now
LTC1779ES6#TRMPBF1021
14.47 USD
253.99 USD
1002.40 USD
2502.20 USD
Buy Now
DC419A3
175.38 USD
Buy Now
LTC1779ES6#TRPBF0
25002.00 USD
Buy Now

Element14 (2)

ProductStockPriceBuy
LTC1779ES6#TRMPBF84
17.14 USD
256.38 USD
1003.84 USD
2503.52 USD
Buy Now
LTC1779ES6#TRMPBF84
17.14 USD
256.38 USD
1003.84 USD
2503.52 USD
Buy Now

FARNELL-ELEMENT14 (2)

ProductStockPriceBuy
LTC1779ES6#TRMPBF84Buy Now
LTC1779ES6#TRMPBF84Buy Now

Available Distributors without stock: 1

NEWARK (0)

ProductStockPriceBuy
LTC1779ES6#PBF0
14.10 USD
252.70 USD
1002.00 USD
Buy Now
LTC1779ES6#TRMPBF0
12.80 USD
5002.02 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC1779 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to LTC1779. Optional, compare LTC1779 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% MP2357 MP2357 product overviewMP2357 product overview MPS TSOT23-5
0% TPS62100 TPS62100 product overviewTPS62100 product overview Texas Instruments SOIC-8
0% TPS62101 TPS62101 product overviewTPS62101 product overview Texas Instruments SOIC-8
0% TPS62102 TPS62102 product overviewTPS62102 product overview Texas Instruments SOIC-8
0% TPS62103 TPS62103 product overviewTPS62103 product overview Texas Instruments SOIC-8
50% LT3470 LT3470 product overviewLT3470 product overview Linear Technology DFN-8, TSOT23-5
50% MAX1836 MAX1836 product overviewMAX1836 product overview Maxim TDFN-EP-6, SOT23-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC1779.

V-IN max. 9.8 V, I-OUT 0.25 A, V-OUT min. 0.8 V, Frequency typ. 550 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744031150 15.0 0.6 0.5 255.00 3.8 x 3.8 x 1.8
744031220 22.0 0.5 0.4 410.00 3.8 x 3.8 x 1.8
744032150 15.0 0.3 0.7 800.00 3.2 x 2.5 x 2.3
74404024180 18.0 0.5 0.7 830.00 2.5 x 2 x 1.2
74404024220 22.0 0.5 0.6 910.00 2.5 x 2 x 1.2
74404032220 22.0 0.6 0.6 450.00 3 x 3 x 1.5
744042180 18.0 0.9 0.7 270.00 4.8 x 4.8 x 2
744042220 22.0 0.9 0.6 280.00 4.8 x 4.8 x 2
744043180 18.0 1.0 0.7 150.00 4.8 x 4.8 x 3
744043220 22.0 0.9 0.7 160.00 4.8 x 4.8 x 3
7440680220 22.0 0.9 0.7 350.00 8 x 8 x 1.2
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