LTC3801 Buck Controller overview
Description
Manufacturer
Category
Sub-Category
LTC3801 is a 1 channel, 1 phase non-sync Buck Controller. The maximum input voltage ranges from 2.50 V to 9.80 V and output current goes up to 5.00 A.
The Controller features fixed 550 kHz switching frequency which results in a typical inductor size of 0.0 uH and a peak efficiency of %. The LTC3801 is available in 1 package option(s): SOT-23 .
Parameter and features overview
| Parameter | Value | Replacement Search Filter |
| Nr. of Channel | 1 | |
| V-IN min. | 2.50 V | |
| V-IN max. | 9.80 V | |
| I-OUT? | 5.00 A | |
| V-OUT min. | 0.80 V | |
| V-OUT max. | 9.80 V | |
| V-OUT | adjustable | |
| V-OUT programmable | ||
| sync/non-sync | non-sync | |
| Frequency typ. | 550 kHz | |
| Frequency adj. | fixed | |
| Frequency adj. min. | ||
| Frequency adj. max. | ||
| ext.clock sync. |  |
|
| ext.clock Frequency min. | ||
| ext.clock Frequency max. | ||
| Softstart | ||
| Softstart adjustable | ||
| Tracking | |
|
| Power Good (PG) | ||
| Enable | ||
| Operating min. | ||
| Operating max. | ||
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | ||
| Inductor size typ. | ||
| Automotive AEC-Q100 | ||
| Light-Load Mode |  |
|
| Single/ Multiphase | single | |
| Nr. of Phases | 1 | |
| Peak Efficiency | ||
| component count min. | ||
| current limit adjustable | ||
| Nr.of package options | 1 | |
| CSP | ||
| SOT | SOT-23 | |
| MSOP | ||
| QFN/DFN | ||
| SO/SOIC | ||
| SOP | ||
| DIP |
LTC3801 Datasheet
Link to the most up-to-date LTC3801 datasheet and the product page for EVM, tools and support information.
LTC3801 inventory, samples and price
Available Distributors with stock: 1
Digi-Key (4)
| Product | Stock | Price | Buy | ||||||||
| LTC3801BES6#TRMPBF | 500 |
| Buy Now | ||||||||
| LTC3801BES6#TRMPBF | 695 |
| Buy Now | ||||||||
| LTC3801BES6#TRMPBF | 695 |
| Buy Now | ||||||||
| DC623A | 2 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRPBF | 0 |
| Buy Now | ||||||||
| LTC3801BES6#TRPBF | 0 |
| Buy Now |
Available Distributors with stock: 3
Arrow Electronics
| Product | Stock | Price | Buy | ||||
| LTC3801BES6#TRMPBF | 651 |
| Buy Now | ||||
| LTC3801ES6#TRMPBF | 137 |
| Buy Now | ||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||
| LTC3801BES6#TRMPBF | 0 |
| Buy Now | ||||
| LTC3801BES6#TRPBF | 0 |
| Buy Now | ||||
| LTC3801ES6#TRPBF | 0 |
| Buy Now |
Digi-Key
| Product | Stock | Price | Buy | ||||||||
| LTC3801BES6#TRMPBF | 695 |
| Buy Now | ||||||||
| LTC3801BES6#TRMPBF | 695 |
| Buy Now | ||||||||
| LTC3801BES6#TRMPBF | 500 |
| Buy Now | ||||||||
| DC623A | 2 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRMPBF | 0 |
| Buy Now | ||||||||
| LTC3801ES6#TRPBF | 0 |
| Buy Now | ||||||||
| LTC3801BES6#TRPBF | 0 |
| Buy Now |
ComS.I.T.
Available Distributors without stock: 1
Mouser Electronics
Table with equivalents and alternatives
The following Buck Controller are similar to LTC3801. Or, compare LTC3801 side-by-side with other Buck Controller via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 0% | LTC1772 |  LTC1772 product overview |
Linear Technology | SOT-23 | |
| 0% | LTC3772 | LTC3772 product overview |
Linear Technology | SOT-23, DFN-8 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3801.
V-IN max. 9.8 V, I-OUT 5 A, V-OUT min. 0.8 V, Frequency typ. 550 kHz
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744040630082 | 0.8 | 6.0 | 9.5 | 10.00 | 6 x 6 x 2.8 | |
| 74404063010 | 1.0 | 5.2 | 7.5 | 10.00 | 6 x 6 x 2.8 | |
| 74404064010 | 1.0 | 5.1 | 11.0 | 11.00 | 6 x 6 x 4.5 | |
| 744065001 | 1.0 | 8.0 | 9.5 | 4.90 | 10 x 10 x 3.1 | |
| 7440710082 | 0.8 | 7.3 | 8.0 | 7.00 | 8 x 8 x 4.6 | |
| 744316100 | 1.0 | 11.5 | 11.5 | 4.75 | 5.5 x 5.3 x 4.3 | |
| 744373240068 | 0.7 | 5.5 | 10.0 | 16.00 | 4.45 x 4.06 x 2 | |
| 74437324010 | 1.0 | 5.0 | 9.0 | 22.00 | 4.45 x 4.06 x 2 | |
| 74437336010 | 1.0 | 7.5 | 11.0 | 13.00 | 5.7 x 5.2 x 3 | |
| 744383560068 | 0.7 | 8.2 | 9.4 | 7.50 | 4.1 x 4.1 x 2.1 | |
| 74438356010 | 1.0 | 7.2 | 9.0 | 12.00 | 4.1 x 4.1 x 2.1 | |
| 7447462010 | 1.0 | 8.5 | 8.0 | 6.00 | 5.5 x 5.5 x 8.5 | |
| 744772010 | 1.0 | 7.5 | 10.0 | 4.70 | 7.8 x 7.8 x 10 | |
| 744777001 | 1.0 | 6.8 | 10.2 | 8.40 | 7.3 x 7.3 x 4.5 | |
| 7447779001 | 1.0 | 5.3 | 9.5 | 10.00 | 7.3 x 7.3 x 4.5 | |
| 744778001 | 1.0 | 5.4 | 6.4 | 9.00 | 7.3 x 7.3 x 3.4 | |
| 7447789001 | 1.0 | 5.4 | 6.4 | 10.00 | 7.3 x 7.3 x 3.5 |
