LTC1174 Buck Converter overview
Description
LTC1174 is a 13.50 V non-sync Buck Converter from with 0.50 A output current. The maximum 13.50 V input voltage can be regulated down into a 1.25 V to 13.00 V output voltage.
It requires are a typical inductor size of 100.00 µH, a typical external component count of 8 and achieves a peak efficiency of 94 %. Further LTC1174 characteristics are a fixed 200 kHz switching frequency and 2 available package option(s): SO-8 PDIP-8 .
Parameter overview and features with replacement search
For the LTC1174 replacement search, please 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. | 4.00 V | |
| V-IN max. | 13.50 V | |
| I-OUT? | 0.50 A | |
| V-OUT min. | 1.25 V | |
| V-OUT max. | 13.00 V | |
| V-OUT | adjustable V | |
| V-OUT programmable |  |
|
| sync/non-sync | non-sync | |
| Frequency typ. | 200 kHz | |
| Frequency | fixed | |
| Frequency selectable | ||
| ext.clock sync. | |
|
| Frequency adj./ ext.clock min. | ||
| Frequency adj./ ext.clock max | ||
| Softstart | |
|
| Softstart adjustable | |
|
| Tracking | |
|
| PG/Power OK | |
|
| Quiescent current max. | 600 µA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | ||
| Inductor size typ. | 100.00 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode |  |
|
| Topology | Buck | |
| Peak Efficiency | 94 % | |
| Component count min. | 8 | |
| current limit adjustable | |
|
| Nr.of packages | 2 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | ||
| SO/SOIC | SO-8 | |
| SOP | ||
| DIP | PDIP-8 | |
| TO | ||
| DDPAK |
LTC1174 Datasheet
Link to the most up-to-date LTC1174 datasheet and the product page for EVM, tools and support information.
LTC1174 Sample stock and distributor price breaks
LTC1174 prices and online available distributors.
Available Distributors with stock: 0
Available Distributors with stock: 0
List of equivalents and alternatives
The following DC/DC Buck Converter are similar to LTC1174. Optional, compare LTC1174 side-by-side with other Buck Converter via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 0% | AS1341 |  AS1341 product overview |
AMS | DFN-8 | |
| 0% | AS7620A | AS7620A product overview |
AMS | MLPQ-12 | |
| 0% | LTC1174HV | LTC1174HV product overview |
Linear Technology | PDIP-8, SO-8 | |
| 0% | MAX1534 | MAX1534 product overview |
Maxim | TQFN-16 | |
| 0% | MAX1684 | MAX1684 product overview |
Maxim | QSOP-16 | |
| 0% | MAX1685 | MAX1685 product overview |
Maxim | QSOP-16 | |
| 0% | MAX1776 | MAX1776 product overview |
Maxim | u00b5MAX-8 | |
| 25% | MAX887 | MAX887 product overview |
Maxim | SO-8 | |
| 50% | MAX1672 | MAX1672 product overview |
Maxim | QSOP-16 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LTC1174.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 74404041330 | 33.0 | 0.7 | 0.6 | 628.00 | 4 x 4 x 1.2 | |
| 74404042330 | 33.0 | 0.7 | 0.9 | 460.00 | 4 x 4 x 1.8 | |
| 74404052330 | 33.0 | 1.0 | 1.1 | 387.00 | 5 x 5 x 2 | |
| 744043270 | 27.0 | 0.9 | 0.6 | 170.00 | 4.8 x 4.8 x 3 | |
| 744052270 | 27.0 | 0.8 | 0.8 | 250.00 | 5.8 x 5.8 x 2 | |
| 744053270 | 27.0 | 1.1 | 0.8 | 135.00 | 5.8 x 5.8 x 3 | |
| 744053330 | 33.0 | 0.9 | 0.8 | 180.00 | 5.8 x 5.8 x 3 | |
| 744062330 | 33.0 | 0.9 | 0.8 | 150.00 | 6.8 x 6.8 x 2.5 | |
| 74408942330 | 33.0 | 0.8 | 1.1 | 424.00 | 4.8 x 4.8 x 3.1 | |
| 74408943330 | 33.0 | 0.9 | 1.2 | 259.00 | 4.8 x 4.8 x 4.1 | |
| 744773127 | 27.0 | 0.9 | 1.0 | 328.00 | 4 x 4.5 x 3.5 | |
| 744773133 | 33.0 | 0.9 | 0.9 | 370.00 | 4 x 4.5 x 3.5 | |
| 744773139 | 39.0 | 0.8 | 0.9 | 418.00 | 4 x 4.5 x 3.5 | |
| 744778133 | 33.0 | 1.2 | 1.2 | 153.00 | 7.3 x 7.3 x 3.4 | |
| 744778139 | 39.0 | 1.0 | 1.1 | 214.00 | 7.3 x 7.3 x 3.4 | |
| 7447789133 | 33.0 | 1.2 | 1.2 | 153.00 | 7.3 x 7.3 x 3.5 | |
| 7447789139 | 39.0 | 1.0 | 1.1 | 209.00 | 7.3 x 7.3 x 3.5 | |
| 784773127 | 27.0 | 0.9 | 1.0 | 328.00 | 4 x 4.5 x 3.5 | |
| 784773133 | 33.0 | 0.9 | 0.9 | 370.00 | 4 x 4.5 x 3.5 | |
| 784773139 | 39.0 | 0.8 | 0.9 | 418.00 | 4 x 4.5 x 3.5 | |
| 784774133 | 33.0 | 1.1 | 1.2 | 150.00 | 5.2 x 5.8 x 4.85 | |
| 784774139 | 39.0 | 0.9 | 1.1 | 215.00 | 5.2 x 5.8 x 4.85 |
