RT8463 Buck (multi-topology) LED driver IC overview

Description

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RT8463 is a non-sync DC/DC Buck (multi-topology) LED driver IC from . Maximum input voltage is 50.0 V and it drives an output current of up to 2.00 A. Assuming a typical 3.5V LED forward voltage RT8463 can drive up to 12 LED in series.

The LED Buck (multi-topology) driver IC features fixed 470 kHz switching frequency, a feedback voltage of 0.10 V and requires a typical inductor size of 22.0 uH. This combination results in a peak efficiency of ~97 %. RT8463 comes in 2 package option(s) - WDFN-12 TSSOP-14 .

Parameter and feature overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.5 V
V-IN max. 50.0 V
Nr.of LEDs max. 12
I-OUT? 2.00 A
MOSFET intern
ext.clock sync. no
sync/non-sync non-sync
Frequency typ. 470 kHz
Frequency adjustable fixed
Frequency min.
Frequency max.
Softstart yes
Softstart adjustable yes
Quiescent current max. 5000 uA
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150.0 °C
Inductor size 22.0 uH
Inductor suggested by Würth Elektronik
Feedback Voltage 0.10 V
Automotive AEC-Q100 no
Topology Buck (multi-topology)
Peak Efficiency 97 %
Component count min. 10
DC Dimming yes
PWM Dimming yes
digital dimming no
Nr. of package options 2
SC70
SOT
MSOP
QFN/DFN WDFN-12
SO/SOIC
SOP TSSOP-14
DIP
TO
Variation
LED temperature compensation

RT8463 Datasheet

Link to the most up-to-date RT8463 datasheet and the product page for EVM, tools and support information.

RT8463

RT8463 inventory, samples and price

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Equivalents and alternatives

The following DC/DC LED Buck (multi-topology) driver are similar to RT8463. Optional, compare RT8463 side-by-side with other LED driver via the Comparison function.

Variation Compare Product Manufacturer Package
25% PAM2863 PAM2863 product overviewPAM2863 product overview Diodes PSOP-8
25% RT8450 RT8450 product overviewRT8450 product overview Richtek WDFN-12, TSSOP-16
25% RT8450B RT8450B product overviewRT8450B product overview Richtek WDFN-12, TSSOP-16
25% RT8453B RT8453B product overviewRT8453B product overview Richtek SOP-8
50% PAM2861 PAM2861 product overviewPAM2861 product overview Diodes SOT23-5, SOT89-5
50% ZXLD1360 ZXLD1360 product overviewZXLD1360 product overview Diodes TSOT25-5
50% ZXLD1362 ZXLD1362 product overviewZXLD1362 product overview Diodes TSOT25-5
50% ZXLD1366 ZXLD1366 product overviewZXLD1366 product overview Diodes TSOT25-5, DFN-6, SO-8
50% GT5315 GT5315 product overviewGT5315 product overview Giantec SOT89-5, SOP-8
50% MP2489 MP2489 product overviewMP2489 product overview MPS TSOT23-5, QFN-6
50% SD42525 SD42525 product overviewSD42525 product overview Silan Micro SOT23-6, SOP-8, SOT89-5
50% MP24895 MP24895 product overviewMP24895 product overview MPS TSOT23-5, QFN-6
50% MPQ2489 MPQ2489 product overviewMPQ2489 product overview MPS TSOT23-5, QFN-6
50% MPQ2489-AEC1 MPQ2489-AEC1 product overviewMPQ2489-AEC1 product overview MPS TSOT23-5, QFN-6
50% RT8470 RT8470 product overviewRT8470 product overview Richtek SOT23-5, SOP-8
50% RT8472 RT8472 product overviewRT8472 product overview Richtek SOT23-5
50% RT8473 RT8473 product overviewRT8473 product overview Richtek SOT23-5
50% ZXLD1360Q ZXLD1360Q product overviewZXLD1360Q product overview Diodes TSOT25-5
50% ZXLD1362Q ZXLD1362Q product overviewZXLD1362Q product overview Diodes TSOT25-5
50% ZXLD1366Q ZXLD1366Q product overviewZXLD1366Q product overview Diodes TSOT25-5, DFN-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT8463.

V-IN min. 4.5 V, V-IN max. 50 V, I-OUT 2 A, Frequency typ. 470 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404054100 10.0 2.1 2.5 64.00 5 x 5 x 4
74404063082 8.2 2.3 2.5 55.00 6 x 6 x 2.8
74404064082 8.2 2.6 4.3 43.00 6 x 6 x 4.5
74404064100 10.0 2.5 3.5 48.00 6 x 6 x 4.5
74404064120 12.0 2.2 3.0 58.00 6 x 6 x 4.5
74404064150 15.0 2.1 2.7 68.00 6 x 6 x 4.5
74404084082 8.2 3.5 4.6 26.00 8 x 8 x 4.2
74404084100 10.0 3.3 4.6 29.00 8 x 8 x 4.2
74404084120 12.0 2.8 3.8 40.00 8 x 8 x 4.2
74404084150 15.0 2.6 3.2 47.00 8 x 8 x 4.2
7440650082 8.2 3.8 2.8 28.50 10 x 10 x 3.1
744065100 10.0 3.0 2.5 40.00 10 x 10 x 3.1
744066100 10.0 3.6 4.0 25.00 10 x 10 x 4.1
744066150 15.0 3.2 3.3 37.00 10 x 10 x 4.1
744071100 10.0 3.4 2.8 28.00 8 x 8 x 4.6
744314101 10.0 3.5 4.0 33.00 7 x 6.9 x 5
744314850 8.5 4.0 4.5 32.50 7 x 6.9 x 5
74437336100 10.0 2.2 4.2 110.00 5.7 x 5.2 x 3
744732100 10.0 4.0 4.0 27.00 9 x 9 x 8
7447452100 10.0 4.7 4.5 15.00 9 x 9 x 13.5
7447462100 10.0 2.5 2.6 55.00 5.5 x 5.5 x 8.5
7447471100 10.0 5.1 4.2 17.50 10.5 x 10.5 x 11.5
744771115 15.0 3.8 4.6 25.00 12 x 12 x 6
7447713082 8.2 3.0 4.7 41.00 10 x 10 x 3
7447713100 10.0 2.6 4.1 51.50 10 x 10 x 3
7447713150 15.0 2.2 3.4 74.00 10 x 10 x 3
7447714150 15.0 3.5 4.1 36.00 10 x 10 x 5
7447715100 10.0 3.8 4.2 25.00 12 x 12 x 4.5
7447715120 12.0 3.5 3.6 30.00 12 x 12 x 4.5
7447720150 15.0 2.4 3.0 33.40 7.8 x 7.8 x 10
74477510 10.0 2.3 3.0 40.00 7 x 7.8 x 5.5
74477610 10.0 3.0 3.2 27.50 9 x 10 x 5.9
744776112 12.0 2.7 3.2 32.60 9 x 10 x 5.9
744776115 15.0 2.5 2.9 34.00 9 x 10 x 5.9
74477710 10.0 2.0 2.6 45.00 7.3 x 7.3 x 4.5
7447779008 8.2 2.7 3.0 47.00 7.3 x 7.3 x 4.5
744777910 10.0 2.0 2.6 45.00 7.3 x 7.3 x 4.5
7447798131 13.0 5.9 4.5 19.90 10.2 x 10.2 x 6.4
7447798151 15.0 5.5 4.0 21.80 10.2 x 10.2 x 6.4
744787082 8.2 2.7 2.8 33.00 7.8 x 7 x 5
744787100 10.0 2.6 2.6 36.50 7.8 x 7 x 5
744787120 12.0 2.5 2.4 45.00 7.8 x 7 x 5
78477410 10.0 2.2 2.5 78.00 5.2 x 5.8 x 4.85
784775082 8.2 3.2 3.2 24.00 7 x 7.8 x 5.5
78477510 10.0 2.3 3.0 40.00 7 x 7.8 x 5.5
784776082 8.2 4.2 4.3 20.00 9 x 10 x 5.9
78477610 10.0 3.0 3.2 28.00 9 x 10 x 5.9
784776112 12.0 2.7 3.2 33.00 9 x 10 x 5.9
784776115 15.0 2.5 2.9 34.00 9 x 10 x 5.9
784777082 8.2 2.0 2.8 97.50 7.3 x 7.3 x 4.3
784778082 8.2 2.2 2.4 86.00 7.3 x 7.3 x 3.5
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