LT3590 Buck LED driver IC overview

Description

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LT3590 is a sync DC/DC Buck LED driver IC from . Maximum input voltage is 55.0 V and it drives an output current of up to 0.05 A. Assuming a typical 3.5V LED forward voltage LT3590 can drive up to 10 LED in series.

The LED Buck driver IC features fixed 850 kHz switching frequency, a feedback voltage of 0.20 V and requires a typical inductor size of 470.0 uH. This combination results in a peak efficiency of ~91 %. LT3590 comes in 2 package option(s) - SC70 QFN-6 .

Parameter and feature overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.5 V
V-IN max. 55.0 V
Nr.of LEDs max. 10
I-OUT? 0.05 A
MOSFET intern
ext.clock sync. no
sync/non-sync sync
Frequency typ. 850 kHz
Frequency adjustable fixed
Frequency min.
Frequency max.
Softstart no
Softstart adjustable no
Quiescent current max. 700 uA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 85 °C
thermal shutdown typ.
Inductor size 470.0 uH
Inductor suggested by Würth Elektronik
Feedback Voltage 0.20 V
Automotive AEC-Q100 no
Topology Buck
Peak Efficiency 91 %
Component count min. 5
DC Dimming yes
PWM Dimming yes
digital dimming no
Nr. of package options 2
SC70 SC70
SOT
MSOP
QFN/DFN QFN-6
SO/SOIC
SOP
DIP
TO
Variation
LED temperature compensation no

LT3590 Datasheet

Link to the most up-to-date LT3590 datasheet and the product page for EVM, tools and support information.

LT3590

LT3590 inventory, samples and price

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Available Distributors with stock: 5

Arrow Electronics

ProductStockPriceBuy
LT3590EDC#TRMPBF 415
1001.65 $
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LT3590EDC#TRMPBF 0
1001.65 $
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LT3590ESC8#TRMPBF 0
1001.65 $
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LT3590ESC8#TRMPBF 0
1001.65 $
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LT3590ESC8#TRPBF 0
1001.65 $
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LT3590EDC#TRPBF 0
1001.65 $
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LT3590EDC#PBF 0 Buy Now
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Digi-Key

ProductStockPriceBuy
LT3590ESC8#TRMPBF 9512
2501.68 €
1001.77 €
252.14 €
13.23 €
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LT3590ESC8#TRMPBF 9512
2501.68 €
1001.77 €
252.14 €
13.23 €
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LT3590ESC8#TRMPBF 9500
5001.60 €
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LT3590EDC#TRMPBF 1320
2501.68 €
1001.77 €
252.14 €
13.23 €
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LT3590EDC#TRMPBF 1320
2501.68 €
1001.77 €
252.14 €
13.23 €
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LT3590EDC#TRMPBF 1000
5001.60 €
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LT3590EDC#TRPBF 0
25001.54 €
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LT3590ESC8#TRPBF 0
25001.54 €
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DC1166A 0
166.84 €
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Verical

ProductStockPriceBuy
LT3590EDC#TRMPBF 415
41.65 $
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Mouser Electronics

ProductStockPriceBuy
LT3590ESC8#TRMPBF 2087
13.62 $
252.40 $
1001.98 $
2501.88 $
5001.72 $
15001.67 $
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LT3590EDC#TRMPBF 629
13.62 $
252.40 $
1001.98 $
2501.88 $
5001.72 $
15001.67 $
Buy Now
LT3590EDC#TRPBF 0
25001.65 $
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LT3590ESC8#TRPBF 0
25001.65 $
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LT3590EDC#PBF 0 Buy Now
LT3590ESC8#PBF 0 Buy Now
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Bristol Electronics

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LT3590ESC8#TRMPBF 332 Buy Now

Available Distributors without stock: 2

element14 Asia-Pacific

ProductStockPriceBuy
LT3590EDC#PBF 0
253.28 SGD
14.70 SGD
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LT3590ESC8#TRMPBF 0
2502.87 SGD
1003.02 SGD
253.66 SGD
15.49 SGD
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LT3590ESC8#TRMPBF 0
2502.87 SGD
1003.02 SGD
253.66 SGD
15.49 SGD
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Schukat electronic

ProductStockPriceBuy
LT3590ESC8TRMPBF 0
13.05 €
202.30 €
501.90 €
1001.86 €
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Equivalents and alternatives

The following DC/DC LED Buck driver are similar to LT3590. Optional, compare LT3590 side-by-side with other LED driver via the Comparison function.

no alternatives found

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LT3590.

V-IN min. 4.5 V, V-IN max. 55 V, I-OUT 0.05 A, Frequency typ. 850 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744032221 220.0 0.1 0.2 9,440.00 3.2 x 2.5 x 2.3
744042221 220.0 0.2 0.2 2,880.00 4.8 x 4.8 x 2
744042331 330.0 0.2 0.1 4,100.00 4.8 x 4.8 x 2
744043221 220.0 0.3 0.2 1,008.00 4.8 x 4.8 x 3
744043331 330.0 0.3 0.2 1,630.00 4.8 x 4.8 x 3
744062221 220.0 0.4 0.3 1,010.00 6.8 x 6.8 x 2.5
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