MAX1742-1.5 Buck Converter overview
Description
MAX1742-1.5 is a 5.50 V sync Buck Converter from with 1.00 A output current. The maximum 5.50 V input voltage can be regulated down into a 1.50 V to 1.50 V output voltage.
It requires are a typical inductor size of 1.50 µH, a typical external component count of 9 and achieves a peak efficiency of 95 %. Further MAX1742-1.5 characteristics are a fixed 1000 kHz switching frequency and 1 available package option(s): QSOP-16 .
Parameter overview and features with replacement search
For the MAX1742-1.5 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. | 3.00 V | |
| V-IN max. | 5.50 V | |
| I-OUT? | 1.00 A | |
| V-OUT min. | 1.50 V | |
| V-OUT max. | 1.50 V | |
| V-OUT | 1.500 V | |
| V-OUT programmable |  |
|
| sync/non-sync | sync | |
| Frequency typ. | 1000 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. | 15 µA | |
| Operating min. | -40 °C | |
| Operating max. | 85 °C | |
| Junction min. | ||
| Junction max. | ||
| thermal shutdown typ. | 160 °C | |
| Inductor size typ. | 1.50 µH | |
| Inductor suggested by Würth Elektronik | ||
| Automotive AEC-Q100 | |
|
| Light-Load-Mode | |
|
| Topology | Buck | |
| Peak Efficiency | 95 % | |
| Component count min. | 9 | |
| current limit adjustable | |
|
| Nr.of packages | 1 | |
| CSP | ||
| SC70 | ||
| SOT | ||
| MSOP | ||
| QFN/DFN | ||
| SO/SOIC | ||
| SOP | QSOP-16 | |
| DIP | ||
| TO | ||
| DDPAK |
MAX1742-1.5 Datasheet
Link to the most up-to-date MAX1742-1.5 datasheet and the product page for EVM, tools and support information.
MAX1742-1.5 Sample stock and distributor price breaks
MAX1742-1.5 prices and online available distributors.
Available Distributors with stock: 2
Digi-Key (1)
Available Distributors without stock: 3
Avnet America (0)
Future Electronics (0)
Rutronik (0)
Available Distributors with stock: 5
Digi-Key
| Product | Stock | Price | Buy | ||||||||||||
| MAX1742EEE+ | 522 |
| Buy Now | ||||||||||||
| MAX1742EEE+T | 0 |
| Buy Now | ||||||||||||
| MAX17428GTJ+ | 0 | Buy Now | |||||||||||||
| MAX17428GTJ+G40 | 0 | Buy Now | |||||||||||||
| MAX17428GTJ+T | 0 | Buy Now | |||||||||||||
| MAX17428GTJ+TG40 | 0 | Buy Now |
Rochester Electronics
Mouser Electronics
Bristol Electronics
Quest Components
Available Distributors without stock: 2
Avnet
Future Electronics
List of equivalents and alternatives
The following DC/DC Buck Converter are similar to MAX1742-1.5. Optional, compare MAX1742-1.5 side-by-side with other Buck Converter via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 0% | ADP2105-1,5 |  ADP2105-1,5 product overview |
Analog Devices | QFN-16 | |
| 0% | ADP2106-1,5 | ADP2106-1,5 product overview |
Analog Devices | QFN-16 | |
| 0% | ADP2107-1,5 | ADP2107-1,5 product overview |
Analog Devices | QFN-16 | |
| 0% | MAX1842-1.5 | MAX1842-1.5 product overview |
Maxim | QSOP-16 | |
| 0% | RP506x-D-E-1.5 | RP506x-D-E-1.5 product overview |
Ricoh | DFN-10 | |
| 0% | RP506x-A-B-1.5 | RP506x-A-B-1.5 product overview |
Ricoh | DFN-10 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of MAX1742-1.5.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744025002 | 2.2 | 1.8 | 2.4 | 57.00 | 2.8 x 2.8 x 3 | |
| 744025003 | 3.3 | 1.5 | 1.8 | 85.00 | 2.8 x 2.8 x 3 | |
| 744031002 | 2.5 | 1.5 | 1.3 | 50.00 | 3.8 x 3.8 x 1.8 | |
| 74404024022 | 2.2 | 1.8 | 2.0 | 80.00 | 2.5 x 2 x 1.2 | |
| 74404024033 | 3.3 | 1.4 | 1.3 | 120.00 | 2.5 x 2 x 1.2 | |
| 74404032022 | 2.2 | 1.8 | 1.7 | 50.00 | 3 x 3 x 1.5 | |
| 74404032033 | 3.3 | 1.5 | 1.5 | 70.00 | 3 x 3 x 1.5 | |
| 74404041033 | 3.3 | 1.8 | 2.1 | 69.00 | 4 x 4 x 1.2 | |
| 7440420027 | 2.7 | 2.0 | 2.2 | 47.00 | 4.8 x 4.8 x 2 | |
| 744042003 | 3.3 | 2.0 | 1.8 | 50.00 | 4.8 x 4.8 x 2 | |
| 7440420039 | 3.9 | 1.8 | 1.7 | 60.00 | 4.8 x 4.8 x 2 | |
| 7440430022 | 2.2 | 2.5 | 2.4 | 27.00 | 4.8 x 4.8 x 3 | |
| 7440430027 | 2.7 | 2.4 | 2.0 | 25.00 | 4.8 x 4.8 x 3 | |
| 744043003 | 3.3 | 2.2 | 1.8 | 30.00 | 4.8 x 4.8 x 3 | |
| 7440430039 | 3.9 | 1.7 | 1.7 | 50.00 | 4.8 x 4.8 x 3 | |
| 7440450039 | 3.9 | 1.3 | 2.5 | 112.00 | 4.5 x 3.2 x 2.9 | |
| 744052003 | 3.0 | 2.2 | 2.4 | 40.00 | 5.8 x 5.8 x 2 | |
| 7440520039 | 3.9 | 2.0 | 2.1 | 50.00 | 5.8 x 5.8 x 2 | |
| 744053003 | 3.0 | 2.8 | 2.5 | 20.00 | 5.8 x 5.8 x 3 | |
| 744062003 | 3.3 | 2.8 | 2.5 | 20.00 | 6.8 x 6.8 x 2.5 | |
| 7440680027 | 2.7 | 2.2 | 1.9 | 52.00 | 8 x 8 x 1.2 | |
| 7440680033 | 3.3 | 2.0 | 1.8 | 61.00 | 8 x 8 x 1.2 | |
| 7440690033 | 3.3 | 2.6 | 2.3 | 42.00 | 8 x 8 x 1.5 | |
| 74438322022 | 2.2 | 1.3 | 2.2 | 252.00 | 2.5 x 2 x 0.8 | |
| 74438323022 | 2.2 | 1.3 | 2.5 | 147.00 | 2.5 x 2 x 1 | |
| 74438323033 | 3.3 | 1.3 | 2.1 | 220.00 | 2.5 x 2 x 1 | |
| 74438343022 | 2.2 | 1.1 | 2.5 | 225.00 | 2.5 x 1.6 x 0.6 | |
| 74479275222 | 2.2 | 1.3 | 1.7 | 166.00 | 2 x 1.25 x 1 | |
| 74479276222 | 2.2 | 1.4 | 1.8 | 135.00 | 2 x 1.6 x 1 | |
| 74479276222C | 2.2 | 1.6 | 2.5 | 112.00 | 2 x 1.25 x 1 | |
| 74479287222 | 2.2 | 1.5 | 2.5 | 132.00 | 2.5 x 2 x 1 | |
| 74479888222 | 2.2 | 1.2 | 1.4 | 200.00 | 2.5 x 2 x 1 | |
| 74479889222 | 2.2 | 1.3 | 1.7 | 250.00 | 2.5 x 2 x 1.2 | |
| 74479889233 | 3.3 | 1.3 | 1.3 | 250.00 | 2.5 x 2 x 1.2 | |
| 78438322022 | 2.2 | 1.3 | 2.2 | 252.00 | 2.5 x 2 x 0.8 | |
| 78438323022 | 2.2 | 1.3 | 2.5 | 147.00 | 2.5 x 2 x 1 | |
| 78438323033 | 3.3 | 1.3 | 2.1 | 220.00 | 2.5 x 2 x 1 |
