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250mA to 2.5A Adjustable Current-Limit Switches

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

Product Details

Key Features

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 250
Current Limit (mA) (max) 2500
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 10
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.25
RON (Ω) (typ) 0.032
VSUPPLY (V) (min) 2.3
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/8
Budgetary
Price (See Notes)
2.09
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Simplified Block Diagram

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Parameters

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 250
Current Limit (mA) (max) 2500
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 10
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.25
RON (Ω) (typ) 0.032
VSUPPLY (V) (min) 2.3
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/8
Budgetary
Price (See Notes)
2.09

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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX14575A, MAX14575AL, MAX14575B, MAX14575C: Typical Operating Circuit MAX14575A, MAX14575AL, MAX14575B, MAX14575C: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .