LTC3773 Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LTC3773 is a 2 channel, 2 phase sync Buck Controller. The maximum input voltage ranges from 3.30 V to 36.00 V and output current goes up to 25.00 A.

The Controller features adjustable 700 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3773 is available in 2 package option(s): QFN-38 SSOP-36 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 2
V-IN min. 3.30 V
V-IN max. 36.00 V
I-OUT? 25.00 A
V-OUT min. 0.60 V
V-OUT max. 5.00 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 700 kHz
Frequency adj. adjustable
Frequency adj. min.
Frequency adj. max.
ext.clock sync. yes
ext.clock Frequency min. 160 kHz
ext.clock Frequency max. 700 kHz
Softstart
Softstart adjustable
Tracking yes
Power Good (PG)
Enable
Operating min.
Operating max.
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ.
Automotive AEC-Q100
Light-Load Mode yes
Single/ Multiphase multi
Nr. of Phases 2
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 2
CSP
SOT
MSOP
QFN/DFN QFN-38
SO/SOIC
SOP SSOP-36
DIP

LTC3773 Datasheet

Link to the most up-to-date LTC3773 datasheet and the product page for EVM, tools and support information.

LTC3773

LTC3773 inventory, samples and price

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Available Distributors with stock: 5

ARROW-NAC (2)

ProductStockPriceBuy
LTC3773EUHF1277
17.88 USD
4176.30 USD
7814.85 USD
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LTC3773EUHF#PBF728
15.64 USD
1004.65 USD
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Chip-One-Stop (3)

ProductStockPriceBuy
LTC3773EUHF806
8067.82 USD
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LTC3773EUHF#PBF66
17.11 USD
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LTC3773EUHF#PBF622
18.90 USD
57.60 USD
107.42 USD
507.00 USD
1006.59 USD
2006.45 USD
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DIGI-KEY (3)

ProductStockPriceBuy
LTC3773EUHF#PBF724
17.91 USD
255.64 USD
1004.65 USD
Buy Now
LTC3773EG#PBF89
17.91 USD
255.64 USD
1004.65 USD
Buy Now
DC913A2
1150.75 USD
Buy Now
LTC3773EG#TRPBF0
20004.75 USD
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LTC3773EUHF#TRPBF0
25004.75 USD
Buy Now

NEWARK (1)

ProductStockPriceBuy
LTC3773EUHF#PBF10
14.84 USD
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Solid-State-Supplies (1)

ProductStockPriceBuy
LTC3773EUHF#PBF5
12.42 USD
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Available Distributors without stock: 1

Element14 (0)

ProductStockPriceBuy
LTC3773EUHF#PBF0
112.64 USD
259.02 USD
1007.43 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with LTC3773 stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LTC3773. Or, compare LTC3773 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
25% LTC3802 LTC3802 product overviewLTC3802 product overview Linear Technology QFN-32, SSOP-28
25% LTC3826 LTC3826 product overviewLTC3826 product overview Linear Technology QFN-32
25% LTC3826-1 LTC3826-1 product overviewLTC3826-1 product overview Linear Technology SSOP-28
25% LTC3858-2 LTC3858-2 product overviewLTC3858-2 product overview Linear Technology QFN-32
25% LTC3890 LTC3890 product overviewLTC3890 product overview Linear Technology QFN-32
25% LTC3890-1 LTC3890-1 product overviewLTC3890-1 product overview Linear Technology SSOP-28
25% LTC3890-2 LTC3890-2 product overviewLTC3890-2 product overview Linear Technology QFN-32
25% LTC3890-3 LTC3890-3 product overviewLTC3890-3 product overview Linear Technology SSOP-28

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3773.

V-IN max. 36 V, I-OUT 25 A, V-OUT min. 0.6 V, Frequency typ. 700 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744302010 0.1 30.0 45.0 0.24 6.95 x 6.8 x 4.7
744302015 0.2 30.0 32.0 0.24 6.95 x 6.8 x 4.7
744303012 0.1 31.0 55.0 0.33 10 x 6.8 x 5
744303015 0.2 31.0 42.0 0.33 10 x 6.8 x 5
744304010 0.1 26.0 52.0 0.17 11.5 x 11.8 x 4
744304016 0.2 26.0 32.0 0.17 11.5 x 11.8 x 4
744307012 0.1 29.0 48.0 0.33 7.4 x 7.2 x 7.2
744307016 0.2 29.0 41.0 0.33 7.4 x 7.2 x 7.2
744308015 0.2 27.0 58.0 0.37 10.1 x 7 x 7
744325016 0.2 25.0 58.0 0.51 10.5 x 10.2 x 5
744355215 0.2 25.0 60.0 0.58 10.5 x 10.2 x 4.2
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