RP400x421A-B Boost Converter Overview
Description
RP400x421A-B is a 4.20 V, 0.90 A switch current limit non-sync Boost Converter from . The input voltage from 0.90 V to 5.50 V can be boosted into an output voltage ranging from 4.20 V to 4.20 V.
Features of the Boost Converter are fixed 700 kHz switching frequency, a typical inductor size of 6.8 µH and it offers a peak efficiency of up to 92 %. The minimum external component count is 4 and RP400x421A-B is available in 2 package option(s): SOT23-5 DFN-6 .
Feature and parameter overview with replacement search
For RP400x421A-B 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.
RP400x421A-B Datasheet
Link to the most up-to-date RP400x421A-B datasheet and the product page for EVM, tools and support information.
RP400x421A-B Price breaks and distributor sample stock
RP400x421A-B prices and available online distributors.
Available Distributors with stock: 0
Available Distributors with stock: 0
Alternatives and equivalents
The following DC/DC Boost Converter are similar to RP400x421A-B. Optional, compare RP400x421A-B side-by-side with other Boost Converter via the Comparison function.
| Variation | Compare | Product | Manufacturer | Package | |
| 0% | RP401-x421A-B-C |  RP401-x421A-B-C product overview |
Ricoh | SOT23-5, DFN-6 |
Inductor suggestions
Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RP400x421A-B.
| Order Code | Spec | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | L x W x H (mm) |
| 744040520047 | 0.5 | 4.9 | 8.0 | 13.90 | 5 x 5 x 2 | |
| 74407000047 | 0.5 | 7.8 | 6.5 | 5.80 | 8 x 8 x 2 | |
| 744373210047 | 0.5 | 5.4 | 9.0 | 18.00 | 4.45 x 4.06 x 1.2 | |
| 744373240056 | 0.6 | 6.0 | 10.5 | 13.50 | 4.45 x 4.06 x 2 | |
| 744373240068 | 0.7 | 5.5 | 10.0 | 16.00 | 4.45 x 4.06 x 2 | |
| 744383350047 | 0.5 | 4.6 | 5.8 | 20.00 | 3 x 3 x 1.5 | |
| 744383360047 | 0.5 | 4.8 | 8.0 | 18.00 | 3 x 3 x 2 | |
| 744383360068 | 0.7 | 4.5 | 6.2 | 22.00 | 3 x 3 x 2 | |
| 744383560056 | 0.6 | 8.5 | 10.8 | 7.00 | 4.1 x 4.1 x 2.1 | |
| 744383560068 | 0.7 | 8.2 | 9.4 | 7.50 | 4.1 x 4.1 x 2.1 | |
| 744778005 | 0.5 | 5.6 | 9.0 | 7.20 | 7.3 x 7.3 x 3.4 | |
| 784383350047 | 0.5 | 4.6 | 5.8 | 20.00 | 3 x 3 x 1.5 |
