LT3592 Buck LED driver IC overview

Description

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LT3592 is a non-sync DC/DC Buck LED driver IC from . Maximum input voltage is 36.0 V and it drives an output current of up to 0.50 A. Assuming a typical 3.5V LED forward voltage LT3592 can drive up to 8 LED in series.

The LED Buck driver IC features adjustable 2200 kHz switching frequency, a feedback voltage of 1.21 V and requires a typical inductor size of 10.0 uH. This combination results in a peak efficiency of ~87 %. LT3592 comes in 2 package option(s) - MSOP-10 QFN-10 .

Parameter and feature overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 3.6 V
V-IN max. 36.0 V
Nr.of LEDs max. 8
I-OUT? 0.50 A
MOSFET intern
ext.clock sync. no
sync/non-sync non-sync
Frequency typ. 2200 kHz
Frequency adjustable adjustable
Frequency min. 400 kHz
Frequency max. 2200 kHz
Softstart yes
Softstart adjustable yes
Quiescent current max. 3000 uA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size 10.0 uH
Inductor suggested by Würth Elektronik
Feedback Voltage 1.21 V
Automotive AEC-Q100 no
Topology Buck
Peak Efficiency 87 %
Component count min. 9
DC Dimming no
PWM Dimming yes
digital dimming no
Nr. of package options 2
SC70
SOT
MSOP MSOP-10
QFN/DFN QFN-10
SO/SOIC
SOP
DIP
TO
Variation
LED temperature compensation no

LT3592 Datasheet

Link to the most up-to-date LT3592 datasheet and the product page for EVM, tools and support information.

LT3592

LT3592 inventory, samples and price

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no online Distributor with LT3592 stock available

Available Distributors with stock: 0

no online Distributor with LT3592 stock available

Equivalents and alternatives

The following DC/DC LED Buck driver are similar to LT3592. Optional, compare LT3592 side-by-side with other LED driver via the Comparison function.

Variation Compare Product Manufacturer Package
0% MP24183 MP24183 product overviewMP24183 product overview MPS QFN-10, SOIC-14
0% MP24830 MP24830 product overviewMP24830 product overview MPS QFN-14, SOIC-14

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3592.

V-IN min. 3.6 V, V-IN max. 36 V, I-OUT 0.5 A, Frequency typ. 2200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025006 6.8 1.1 1.3 142.00 2.8 x 2.8 x 3
744025100 10.0 1.0 1.1 170.00 2.8 x 2.8 x 3
744029006 6.8 0.8 0.7 250.00 2.8 x 2.8 x 1.5
744031006 6.8 0.9 0.8 135.00 3.8 x 3.8 x 1.8
74404024068 6.8 0.9 1.0 300.00 2.5 x 2 x 1.2
74404032068 6.8 1.2 0.9 120.00 3 x 3 x 1.5
74404032100 10.0 0.8 0.9 230.00 3 x 3 x 1.5
74404041100 10.0 1.3 1.0 168.00 4 x 4 x 1.2
744042006 6.8 1.5 1.3 80.00 4.8 x 4.8 x 2
744042008 8.2 1.4 1.1 100.00 4.8 x 4.8 x 2
744042100 10.0 1.3 1.0 120.00 4.8 x 4.8 x 2
744043005 5.6 1.4 1.3 70.00 4.8 x 4.8 x 3
744043006 6.8 1.3 1.3 80.00 4.8 x 4.8 x 3
744043008 8.2 1.3 1.1 90.00 4.8 x 4.8 x 3
744043100 10.0 1.2 1.0 95.00 4.8 x 4.8 x 3
744052100 10.0 1.1 1.3 105.00 5.8 x 5.8 x 2
7440680068 6.8 1.4 1.2 127.00 8 x 8 x 1.2
7440680082 8.2 1.4 1.1 142.00 8 x 8 x 1.2
7440680100 10.0 1.2 1.0 177.00 8 x 8 x 1.2
7440690100 10.0 1.6 1.3 112.00 8 x 8 x 1.5
74479889268 6.8 0.8 0.7 500.00 2.5 x 2 x 1.2
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