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MAX14575B：250mA to 2.5A Adjustable Current-Limit Switches

Wide 250mA to 2.5A Current-Limit Range Has Considerable Versatility

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.

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

MAX14575A, MAX14575AL, MAX14575B, MAX14575C: Typical Operating Circuit Applications/Uses Data Modem Cards Portable Media Players RF Power Amplifier in Cell Phones SDXC Card Power-Supply Protection USB Ports UTCA/ATCA Platforms

DataSheet

Parametrics

Design kits & evaluation modules

• MAX14575AEVKIT
• MAX14575BEVKIT
• MAX14575CEVKIT

Quality and Environmental Data

• MAX14575B.pdf

Ordering Information