The MAX14523A/MAX14523AL/MAX14523B/MAX14523C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These current-limit switches feature a low 70mΩ on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 250mA to 1.5A, making these devices ideal for SDIO (secure digital input/output) and other load-switching applications. Each device in the family handles an overcurrent event differently depending on the option selected. The MAX14523A/MAX14523AL go into an autoretry mode, the MAX14523B latches off the switch, and the MAX14523C features a continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and reverse-current blocking to prevent current from being driven back into the source. The MAX14523A/MAX14523AL/MAX14523B/MAX14523C are available in a tiny 8-pin, 3mm x 3mm, TDFN pack- age and operate over the -40°C to +125°C automotive temperature range.
The MAX14523A, MAX14523AL, MAX14523B and MAX14523C are programmable current‑limit switches that operate from +1.7 V to +5.5 V and provide adjustable limits from 250 mA to 1.5 A. They feature low on‑resistance, thermal‑shutdown, reverse‑current protection and mode‑specific behavior (autoretry, latch‑off, continuous limit).\n\nThe document includes absolute maximum ratings, electrical characteristics, pin descriptions, functional diagrams, layout guidelines, package information and revision history, enabling designers to integrate these devices into SDIO, USB, VGA, GPS, mobile and other load‑switching applications.
| Supply Voltage Range | 1.7 V to 5.5 V |
|---|---|
| Adjustable Current‑Limit Range | 250 mA to 1.5 A |
| Package | 8‑pin 3 mm × 3 mm TDFN |
| Operating Temperature Range | -40 °C to +125 °C |
The devices operate from +1.7 V to +5.5 V.
The current limit is adjustable from 250 mA up to 1.5 A.
They are supplied in an 8‑pin 3 mm × 3 mm TDFN package.