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
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
titleDownload file
MAX14575A-MAX14575C Data SheetMAX14575A-MAX14575C.pdf
Parametrics
Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX14575AYes12502500Yes10Resistor0.250.0322.35.5-40 to +85TDFN-EP/8$1.88 @1k
MAX14575ALTDFN-EP/8
MAX14575BTDFN-EP/8
MAX14575CTDFN-EP/8
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX14575BETA+ActiveTDFN-EP,;8 pin;4.2 mm²-40°C to +85°CLead Free
MAX14575BETA+TActiveTDFN-EP,;8 pin;4.2 mm²-40°C to +85°CLead Free
MAX14575A-MAX14575C.pdf MAX14575C
MAX14575A-MAX14575C_cn.pdf MAX14575C
MAX14575B.pdf MAX14575B
MAX14575A-MAX14575C_cn.pdf MAX14575B