The MAX14575A/MAX14575AL/MAX14575B/MAX14575C 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 32mΩ (typ) on-resistance and operate from a +2.3V to +5.5V input-voltage range. The current limit is adjustable from 250mA to 2.5A, making these devices ideal for charging a large load capacitor, as well as for high-current load switching applications.Each device in the family handles an overcurrent event differently depending on the option selected. The MAX14575A/MAX14575AL feature an autoretry mode; the MAX14575ALETA+T has active-high EN polarity, while the MAX14575AL has active-low EN polarity. The MAX14575B has latch-off mode, and the MAX14575C features a continuous current-limit mode. Additional safety features include thermal-shutdown protection to prevent overheating and reverse-current blocking to prevent current from being driven back into the source.The MAX14575A/MAX14575AL/MAX14575B/MAX14575C are available in a small 2mm x 2mm, 8-pin TDFN package and operate over the -40°C to +85°C extended temperature range.
Feature
- Integrated Protection Reduces Board Space and Makes Systems More Robust
- ±10% Overload Current Limit (500mA to 2.5A)
- Reverse-Current Protection
- 1μA (max) Shutdown Reverse Current
- Short-Circuit Protection
- Thermal Shutdown Protection
- Low Power Dissipation Reduces Heat and/or Battery Consumption
- 130μA (typ) Low Supply Current
- 32mΩ (typ) Low RON
- Flexible Part Can Easily Be Reused In Multiple Projects
- Adjustable Current Limit (250mA to 2500mA)
- +2.3V to +5.5V Supply Voltage Range
Applications
- Data Modem Cards
- Portable Media Players
- RF Power Amplifier in Cell Phones
- SDXC Card Power-Supply Protection
- USB Ports
- UTCA/ATCA Platforms
