LTC3428 Boost Converter Overview
Description
LTC3428 is a 5.25 V, 2.50 A switch current limit non-sync Boost Converter from . The input voltage from 1.60 V to 4.50 V can be boosted into an output voltage ranging from 1.60 V to 5.25 V.
Features of the Boost Converter are fixed 1000 kHz switching frequency, a typical inductor size of 2.2 µH and it offers a peak efficiency of up to 92 %. The minimum external component count is 11 and LTC3428 is available in 1 package option(s): DFN-10 .
Feature and parameter overview with replacement search
For LTC3428 replacement search, select a main parameter tolerance value and adjust the checkboxes for feature match. The product counter within the button shows the number of available equivalents and a click on the replacement button shows all possible replacements within a parametric overview.
| Parameter | Value | Replacement Search Filter |
| V-IN min. | 1.60 V | |
| V-IN max. | 4.50 V | |
| Current-Limit typ.? | 2.50 A | |
| V-OUT min. | 1.60 V | |
| V-OUT max. | 5.25 V | |
| VOUT | adjustable | |
| VOUT programmable |  |
|
| sync/non-sync | non-sync | |
| Frequency typ. | 1000 kHz | |
| Frequency adjustable | fixed | |
| Frequency selectable | ||
| Frequency adj. min. | ||
| Frequency adj. max. | ||
| extern clock sync. | |
|
| Softstart |  |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| LBI/LBO | |
|
| Frequency sync. min. | ||
| Frequency sync. max. | ||
| Down Mode | |
|
| Quiescent current max. | 2000 µA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | ||
| Inductor size typ. | 2.2 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Boost | |
| Peak Efficiency | 92 % | |
| Component count min. | 11 | |
| current limit adjustable | |
|
| Nr.of package options | 1 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | DFN-10 | |
| SO/SOIC | ||
| SOP | ||
| DIP | ||
| TO | ||
| DDPAK |
LTC3428 Datasheet
Link to the most up-to-date LTC3428 datasheet and the product page for EVM, tools and support information.
LTC3428 Price breaks and distributor sample stock
LTC3428 prices and available online distributors.
Available Distributors with stock: 4
Chip One Stop (1)
| Product | Stock | Price | Buy | ||||||
| LTC3428EDD#PBF | 32 |
| Buy Now |
Digi-Key (4)
Farnell Element14 UK (1)
RS Components (1)
Available Distributors without stock: 2
Element14 (0)
Rutronik (0)
Available Distributors with stock: 8
Digi-Key
| Product | Stock | Price | Buy | ||||||||
| LTC3428EDD#TRPBF | 2325 |
| Buy Now | ||||||||
| LTC3428EDD#TRPBF | 2325 |
| Buy Now | ||||||||
| LTC3428EDD#PBF | 677 |
| Buy Now | ||||||||
| DC700A | 3 |
| Buy Now | ||||||||
| LTC3428EDD#TRPBF | 0 |
| Buy Now |
Mouser Electronics
| Product | Stock | Price | Buy | ||||||||
| LTC3428EDD#PBF | 516 |
| Buy Now | ||||||||
| LTC3428EDD#TRPBF | 0 |
| Buy Now | ||||||||
| LTC3428EDD | 0 | Buy Now | |||||||||
| LTC3428EDD#TR | 0 | Buy Now |
Bristol Electronics
Quest Components
ComS.I.T.
Farnell element14
Chip1Stop
RS Components
Available Distributors without stock: 1
Arrow Electronics
Alternatives and equivalents
The following DC/DC Boost Converter are similar to LTC3428. Optional, compare LTC3428 side-by-side with other Boost Converter via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 0% | LTC3426 |  LTC3426 product overview |
Linear Technology | TSOT23-6 | |
| 10% | MAX8752 | MAX8752 product overview |
Maxim Integrated | TDFN-EP-8 | |
| 50% | LT1946 | LT1946 product overview |
Linear Technology | MSOP-8 | |
| 50% | LT1946A | LT1946A product overview |
Linear Technology | MSOP-8 | |
| 50% | LT3467 | LT3467 product overview |
Linear Technology | SOT23-6, DFN-6 | |
| 50% | LT3467A | LT3467A product overview |
Linear Technology | SOT23-6, DFN-6 | |
| 50% | MP3212 | MP3212 product overview |
MPS | QFN-10 | |
| 50% | RP600K-D | RP600K-D product overview |
Ricoh | DFN-10 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3428.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744305040 | 0.4 | 28.0 | 20.0 | 0.16 | 13.5 x 13.3 x 5.2 | |
| 744306030 | 0.3 | 26.0 | 24.0 | 0.30 | 10.5 x 10.3 x 5.5 | |
| 7443081040 | 0.4 | 38.0 | 21.0 | 0.29 | 9.4 x 6.2 x 8.1 | |
| 744316033 | 0.3 | 18.5 | 20.0 | 1.75 | 5.5 x 5.3 x 4.3 | |
| 744373360033 | 0.3 | 9.6 | 22.0 | 4.30 | 5.7 x 5.2 x 3 | |
| 744383560033 | 0.3 | 9.6 | 12.4 | 6.00 | 4.1 x 4.1 x 2.1 |
