LTC3490 LED Boost Driver overview
Description
Manufacturer
Category
Sub-Category
LTC3490 is a 1 channel, 3.2 V, 0.35 A/string sync LED Boost Driver. It can drive a maximum of 1 LED (~3.5Vfwd) per string, features a fixed 1300 kHz frequency and is available in 2 package option(s): DFN-8 S-8 .
Further characteristics are a feedback voltage of 0.000 V, a typical inductor size of 3.3 uH and a peak efficiency of 90 %.
Parameter and features overview
| Parameter | Value | Replacement Search Filter |
| Nr. of Channel | 1 | |
| V-IN min. | 1.0 V | |
| V-IN max. | 3.2 V | |
| V-OUT max. | 4.0 V | |
| Nr.of LED per string typ. | 1 | |
| I-OUT/string? | 0.35 A | |
| current limit typ. | 2.00 A | |
| sync/non-sync | sync | |
| Frequency typ. | 1300 kHz | |
| Frequency | fixed | |
| Frequency min. | ||
| Frequency max. | ||
| Softstart |  |
|
| Softstart adjustable | |
|
| Down-Mode | |
|
| Quiescent current max. | 1000 uA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | ||
| Inductor size typ. | 3.3 uH | |
| feedback voltage | ||
| Automotive AEC-Q100 | |
|
| Topology | Boost | |
| Peak Efficiency | 90 % | |
| Component count min. | 3 | |
| DC dimming | |
|
| PWM dimming | |
|
| PWM frequency min. | ||
| PWM frequency max. | ||
| digital dimming | |
|
| digital interface | |
|
| LED flash | |
|
| TxMask | |
|
| Nr.of current sources | 1 | |
| Nr.of package options | 2 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | DFN-8 | |
| SO/SOIC | S-8 | |
| SOP | ||
| DIP |
LTC3490 Datasheet
Link to the most up-to-date LTC3490 datasheet and the product page for EVM, tools and support information.
LTC3490 inventory, samples and price
Available Distributors with stock: 0
no online Distributor with LTC3490 stock available
Available Distributors with stock: 0
no online Distributor with LTC3490 stock available
List with equivalents & alternatives
The following DC/DC LED Boost driver are similar to LTC3490. Optional, compare LTC3490 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 LTC3490.
V-IN min. 1 V, V-OUT max. 4 V, current limit typ. 2 A, Frequency typ. 1300 kHz
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 74407000018 | 0.2 | 9.0 | 9.0 | 3.51 | 8 x 8 x 2 | |
| 744373240022 | 0.2 | 9.5 | 17.0 | 6.60 | 4.45 x 4.06 x 2 |
