RT8462 Buck (multi-topology) LED driver IC overview

Description

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RT8462 is a non-sync DC/DC Buck (multi-topology) LED driver IC from . Maximum input voltage is 36.0 V and it drives an output current of up to 0.42 A. Assuming a typical 3.5V LED forward voltage RT8462 can drive up to 8 LED in series.

The LED Buck (multi-topology) driver IC features adjustable 800 kHz switching frequency, a feedback voltage of 0.19 V and requires a typical inductor size of 22.0 uH. This combination results in a peak efficiency of ~95 %. RT8462 comes in 2 package option(s) - WQFN-16 SOP-14 .

Parameter and feature overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.5 V
V-IN max. 36.0 V
Nr.of LEDs max. 8
I-OUT? 0.42 A
MOSFET extern
ext.clock sync. no
sync/non-sync non-sync
Frequency typ. 800 kHz
Frequency adjustable adjustable
Frequency min. 250 kHz
Frequency max. 800 kHz
Softstart yes
Softstart adjustable yes
Quiescent current max. 7200 uA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 145.0 °C
Inductor size 22.0 uH
Inductor suggested by Würth Elektronik
Feedback Voltage 0.19 V
Automotive AEC-Q100 no
Topology Buck (multi-topology)
Peak Efficiency 95 %
Component count min. 13
DC Dimming yes
PWM Dimming yes
digital dimming no
Nr. of package options 2
SC70
SOT
MSOP
QFN/DFN WQFN-16
SO/SOIC
SOP SOP-14
DIP
TO
Variation
LED temperature compensation no

RT8462 Datasheet

Link to the most up-to-date RT8462 datasheet and the product page for EVM, tools and support information.

RT8462

RT8462 inventory, samples and price

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Available Distributors with stock: 5

Digi-Key

ProductStockPriceBuy
RT8462GS 4886
10001.11 €
5001.33 €
2501.52 €
1001.62 €
251.91 €
102.02 €
12.25 €
Buy Now
RT8462GS 4886
10001.11 €
5001.33 €
2501.52 €
1001.62 €
251.91 €
102.02 €
12.25 €
Buy Now
RT8462GS 2500
50000.96 €
25001.00 €
Buy Now
RT8462ZQW 0
105000.79 €
75000.83 €
30000.86 €
15000.92 €
Buy Now
RT8462ZQW 0
10000.95 €
5001.15 €
2501.31 €
1001.39 €
251.64 €
101.73 €
11.93 €
Buy Now
RT8462ZQW 0
10000.95 €
5001.15 €
2501.31 €
1001.39 €
251.64 €
101.73 €
11.93 €
Buy Now
show stock=0hide stock=0

Verical

ProductStockPriceBuy
RT8462GS 491
551.15 $
Buy Now

Newark element14

ProductStockPriceBuy
RT8462GS 491
10.92 $
100.92 $
250.92 $
1000.92 $
2500.92 $
5000.92 $
10000.92 $
Buy Now

element14 Asia-Pacific

ProductStockPriceBuy
RT8462GS 574
10001.82 SGD
5002.20 SGD
2502.51 SGD
1002.83 SGD
253.14 SGD
103.51 SGD
13.89 SGD
Buy Now

Farnell element14

ProductStockPriceBuy
RT8462GS 574
10.69 GBP
Buy Now

Equivalents and alternatives

The following DC/DC LED Buck (multi-topology) driver are similar to RT8462. Optional, compare RT8462 side-by-side with other LED driver via the Comparison function.

Variation Compare Product Manufacturer Package
0% MP4600 MP4600 product overviewMP4600 product overview MPS QFN-10
0% RT8475 RT8475 product overviewRT8475 product overview Richtek WQFN-16, SOP-14
50% MP4601 MP4601 product overviewMP4601 product overview MPS SOIC-16, TSSOP-16
50% MP4603 MP4603 product overviewMP4603 product overview MPS SOIC-16, TSSOP-16

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT8462.

V-IN min. 4.5 V, V-IN max. 36 V, I-OUT 0.42 A, Frequency typ. 800 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744025220 22.0 0.5 0.8 525.00 2.8 x 2.8 x 3
744025270 27.0 0.5 0.7 745.00 2.8 x 2.8 x 3
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
74404032330 33.0 0.5 0.5 911.00 3 x 3 x 1.5
74404041330 33.0 0.7 0.6 628.00 4 x 4 x 1.2
74404042330 33.0 0.7 0.9 460.00 4 x 4 x 1.8
744042220 22.0 0.9 0.6 280.00 4.8 x 4.8 x 2
744043220 22.0 0.9 0.7 160.00 4.8 x 4.8 x 3
744043270 27.0 0.9 0.6 170.00 4.8 x 4.8 x 3
744043330 33.0 0.8 0.6 195.00 4.8 x 4.8 x 3
744045220 22.0 0.6 1.0 560.00 4.5 x 3.2 x 2.9
744045330 33.0 0.4 0.9 880.00 4.5 x 3.2 x 2.9
744052220 22.0 0.8 0.9 240.00 5.8 x 5.8 x 2
744052270 27.0 0.8 0.8 250.00 5.8 x 5.8 x 2
744053220 22.0 1.2 0.9 100.00 5.8 x 5.8 x 3
744053270 27.0 1.1 0.8 135.00 5.8 x 5.8 x 3
744053330 33.0 0.9 0.8 180.00 5.8 x 5.8 x 3
744062220 22.0 1.2 1.0 100.00 6.8 x 6.8 x 2.5
744062330 33.0 0.9 0.8 150.00 6.8 x 6.8 x 2.5
7440680220 22.0 0.9 0.7 350.00 8 x 8 x 1.2
7440690220 22.0 1.0 0.9 272.00 8 x 8 x 1.5
7440700220 22.0 1.3 1.0 166.00 8 x 8 x 2
74408941330 33.0 0.5 0.9 1,015.00 4.8 x 4.8 x 2.1
744773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
744773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
744773139 39.0 0.8 0.9 418.00 4 x 4.5 x 3.5
784773127 27.0 0.9 1.0 328.00 4 x 4.5 x 3.5
784773133 33.0 0.9 0.9 370.00 4 x 4.5 x 3.5
784773139 39.0 0.8 0.9 418.00 4 x 4.5 x 3.5
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