250mA to 2.5A Adjustable Current-Limit Switches

 

Part Number	Replacement	Explanation

Description

Create a design and simulate using EE-Sim^® tools:

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 MAX14575A 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.

MAX14575A, MAX14575AL, MAX14575B, MAX14575C: Typical Operating Circuit Enlarge+

Key Features

• 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 R_ON
• Flexible Part Can Easily Be Reused In Multiple Projects
  • Adjustable Current Limit (250mA to 2500mA)
  • +2.3V to +5.5V Supply Voltage Range

Applications/Uses

• Data Modem Cards
• Portable Media Players
• RF Power Amplifier in Cell Phones
• SDXC Card Power-Supply Protection
• USB Ports
• UTCA/ATCA Platforms