LTC3129-1 Buck-Boost Converter Overview
Description
LTC3129-1 is a 15.00 V, 0.20 A output current sync Buck-Boost Converter from . The 2.42 V to 15.00 V input range can be converted into a 2.50 V to 15.00 V output voltage.
The Buck-Boost Converter features fixed 1200 kHz switching frequency, requires a typical inductor size of 10.0 µH and provides a peak efficiency of 95 %. LTC3129-1 circuitry consists typically of 6 external components and is available in 2 package option(s): MSOP-16 QFN-16 .
Parameter and feature overview with replacement search
For LTC3129-1 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. | 2.42 V | |
| V-IN max. | 15.00 V | |
| I-OUT? | 0.20 A | |
| V-OUT min. | 2.50 V | |
| V-OUT max. | 15.00 V | |
| V-OUT fixed | adjustable | |
| V-OUT programmable |  |
|
| sync/non-sync | sync | |
| Frequency typ. | 1200 kHz | |
| Frequency adjustable | fixed | |
| Frequency adjustable min. | ||
| Frequency adjustable max. | ||
| ext.clock sync |  |
|
| Frequency sync. min. | ||
| Frequency sync. max. | ||
| Softstart | |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| Quiescent current max. | 3 µA | |
| Operating min. | ||
| Operating max. | ||
| Junction min. | -40 °C | |
| Junction max. | 125 °C | |
| thermal shutdown typ. | ||
| Inductor size typ. | 10.0 µH | |
| Automotive AEC-Q100 | |
|
| Light-Load Mode | |
|
| Topology | Buck-Boost | |
| Peak Efficiency | 95 % | |
| Component count min. | 6 | |
| current limit adjustable | |
|
| LBI/LBO | |
|
| Nr. of package options | 2 | |
| CSP | ||
| SOT | ||
| MSOP | MSOP-16 | |
| QFN | QFN-16 | |
| SO/SOIC | ||
| SOP |
Charts and pictures
LTC3129-1 Datasheet
Link to the most up-to-date LTC3129-1 datasheet and the product page for EVM, tools and support information.
LTC3129-1 Distributor price breaks and sample stock
LTC3129-1 prices and available buy online distributors. Optional, check regional sources for price and inventory: for Russia via efind, for South Korea via ICPart, for Japan via ICBAIBAI, for China via IC5858 or International via IC2IC.
Available Distributors with stock: 0
Available Distributors with stock: 0
Equivalents and alternatives
The following Buck-Boost DC/DC Converter are similar to LTC3129-1. Optional, compare LTC3129-1 side-by-side with other selected Buck-Boost Converter via the Comparison function.
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC3129-1.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744025270 | 27.0 | 0.5 | 0.7 | 745.00 | 2.8 x 2.8 x 3 | |
| 744031220 | 22.0 | 0.5 | 0.4 | 410.00 | 3.8 x 3.8 x 1.8 | |
| 744032180 | 18.0 | 0.2 | 0.7 | 880.00 | 3.2 x 2.5 x 2.3 | |
| 744032220 | 22.0 | 0.2 | 0.6 | 1,040.00 | 3.2 x 2.5 x 2.3 | |
| 74404024180 | 18.0 | 0.5 | 0.7 | 830.00 | 2.5 x 2 x 1.2 | |
| 74404024220 | 22.0 | 0.5 | 0.6 | 910.00 | 2.5 x 2 x 1.2 | |
| 74404032220 | 22.0 | 0.6 | 0.6 | 450.00 | 3 x 3 x 1.5 | |
| 744042180 | 18.0 | 0.9 | 0.7 | 270.00 | 4.8 x 4.8 x 2 | |
| 744042220 | 22.0 | 0.9 | 0.6 | 280.00 | 4.8 x 4.8 x 2 | |
| 744043180 | 18.0 | 1.0 | 0.7 | 150.00 | 4.8 x 4.8 x 3 | |
| 744043220 | 22.0 | 0.9 | 0.7 | 160.00 | 4.8 x 4.8 x 3 | |
| 744043270 | 27.0 | 0.9 | 0.6 | 170.00 | 4.8 x 4.8 x 3 | |
| 7440680220 | 22.0 | 0.9 | 0.7 | 350.00 | 8 x 8 x 1.2 |
