LTC1775 Buck Controller overview



LTC1775 is a 1 channel, 1 phase sync Buck Controller. The maximum input voltage ranges from 3.70 V to 36.00 V and output current goes up to 20.00 A.

The Controller features fixed 150 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC1775 is available in 1 package option(s): SSOP-16 .

Parameter and features overview

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Nr. of Channel 1
V-IN min. 3.70 V
V-IN max. 36.00 V
I-OUT? 20.00 A
V-OUT min. 1.19 V
V-OUT max. 36.00 V
V-OUT adjustable
V-OUT programmable
sync/non-sync sync
Frequency typ. 150 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. yes
ext.clock Frequency min. 150 kHz
ext.clock Frequency max. 225 kHz
Softstart adjustable
Tracking no
Power Good (PG)
Operating min.
Operating max.
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ.
Automotive AEC-Q100
Light-Load Mode yes
Single/ Multiphase single
Nr. of Phases 1
Peak Efficiency
component count min.
current limit adjustable
Nr.of package options 1

LTC1775 Datasheet

Link to the most up-to-date LTC1775 datasheet and the product page for EVM, tools and support information.


LTC1775 inventory, samples and price

Available Distributors with stock: 0

no online Distributor with LTC1775 stock available

Available Distributors with stock: 0

no online Distributor with LTC1775 stock available

Table with equivalents and alternatives

The following Buck Controller are similar to LTC1775. Or, compare LTC1775 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% LTC3834-1 LTC3834-1 product overviewLTC3834-1 product overview Linear Technology DFN-16, SSOP-16
0% LTC3835 LTC3835 product overviewLTC3835 product overview Linear Technology QFN-20, TSSOP-20
0% LTC3835-1 LTC3835-1 product overviewLTC3835-1 product overview Linear Technology DFN-16, SSOP-16
0% LTC3851A-1 LTC3851A-1 product overviewLTC3851A-1 product overview Linear Technology MS-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC1775.

V-IN max. 36 V, I-OUT 20 A, V-OUT min. 1.19 V, Frequency typ. 150 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744325120 1.2 20.0 25.0 1.80 10.5 x 10.2 x 5
7443320100 1.0 24.0 32.0 1.85 12.1 x 11.4 x 10
7443330100 1.0 20.0 27.5 2.15 10.9 x 10 x 9.7
7443550140 1.4 22.0 26.0 2.40 13 x 12.8 x 5
744355090 0.9 24.0 28.0 1.62 13 x 12.8 x 5
7443551130 1.3 25.0 25.0 1.70 13.2 x 12.8 x 6.5
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