MAX4995B:50mA to 600mA Programmable Current-Limit Switches

Industry's Most Accurate Current Limiter in Tiny 1.4mm x 1.8mm UTQFN

The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches feature a low 130mΩ (typ) on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 50mA to 600mA, making these devices ideal for SDIO (secure digital input/output) and other load-switching applications. Each device in the family handles an overcurrent event differently depending on the option selected. The MAX4995A/MAX4995AF/MAX4995AL go into an autoretry mode, the MAX4995B latches off the switch, and the MAX4995C places the device in a continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and reverse-current blocking to prevent current from being driven back into the source. The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C are available in a tiny 10-pin, 1.4mm x 1.8mm UTQFN, a 6-pin SOT23, or an 8-pin, 2mm x 2mm TDFN package and operate over the -40°C to +125°C extended temperature range.

Key Features
  • 50mA to 600mA Programmable Current Limit
  • ±10% Accurate Current Limit
  • Overload Active-Low FLAG Threshold
  • Low Dropout Voltage
  • Short-Circuit Protection
  • Thermal Shutdown
  • Reverse-Current Protection
  • 170µA (typ) Supply Current
  • +1.7V to +5.5V Supply Voltage Range
  • Tiny 10-Pin, 1.4mm x 1.8mm UTQFN Package
MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: Typical Operating Circuit
MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: Typical Operating Circuit
Applications/Uses
  • Cell Phones
  • GPS
  • MP3 Players
  • SDIO Ports
  • USB Ports
DataSheet
titleDownload file
MAX4995A-MAX4995C Data SheetMAX4995A-MAX4995C.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
MAX4995AYes150600Yes10Resistor0.050.131.75.5-40 to +125SOT/6
TDFN-EP/8
UTQFN/10
$1.44 @1k
MAX4995AFSOT/6
TDFN-EP/8
UTQFN/10
$1.76 @1k
MAX4995ALSOT/6
TDFN-EP/8
UTQFN/10
$1.76 @1k
MAX4995BSOT/6
UTQFN/10
$1.76 @1k
MAX4995CSOT/6
UTQFN/10
$1.76 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4995BAUT+TActiveSOT,;6 pin;9 mm²-40°C to +125°CLead Free
MAX4995BAVB+ActiveUTQFN,;10 pin;2.5 mm²-40°C to +125°CLead Free
MAX4995BAVB+TActiveUTQFN,;10 pin;2.5 mm²-40°C to +125°CLead Free
MAX4995A-MAX4995C.pdf MAX4995C
MAX4995B.pdf MAX4995B
MAX4995A-MAX4995C.pdf MAX4995AF