RT8463 Buck (multi-topology) LED driver IC overview
Description
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
| Parameter | Value | Replacement 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. |  |
|
| sync/non-sync | non-sync | |
| Frequency typ. | 470 kHz | |
| Frequency adjustable | fixed | |
| Frequency min. | ||
| Frequency max. | ||
| Softstart |  |
|
| Softstart adjustable | |
|
| 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 | |
|
| Topology | Buck (multi-topology) | |
| Peak Efficiency | 97 % | |
| Component count min. | 10 | |
| DC Dimming | |
|
| PWM Dimming | |
|
| digital dimming | |
|
| 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 inventory, samples and price
Available Distributors with stock: 0
Available Distributors with stock: 0
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.
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT8463.
| 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 |
