MAX890L:1.2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown

Low-Resistance P-Channel Switches with Adjustable, Accurate Current Limit Protects Systems and USB

The MAX890L smart, low-voltage, P-channel, MOSFET power switch is intended for high-side load-switching applications. This switch operates with inputs from +2.7V to +5.5V, making it ideal for both +3V and +5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal-overload protection limits power dissipation and junction temperatures. The MAX890L's maximum current limit is 1.2A. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 10µA. When the switch is off, the supply current decreases to 0.1µA. The MAX890L is available in an 8-pin SO package.

Key Features
  • +2.7V to +5.5V Input Range
  • Programmable Current Limit
  • Low Quiescent Current
    • 10µA (typ) at VIN = 3.3V
    • 0.1µA (typ) with Switch Off
  • Thermal Shutdown
  • Active-Low FAULT Indicator Output
  • 0.09Ω (typ) On-Resistance
MAX890, MAX890L: Typical Operating Circuit
MAX890, MAX890L: Typical Operating Circuit
Applications/Uses
  • Access Bus Slots
  • PCMCIA Slots
  • Portable Equipment
DataSheet
titleDownload file
MAX890-MAX890L Data SheetMAX890-MAX890L.pdf
Parametrics
Part NumberPower 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
MAX890L112001200Yes15Resistor0.320.0752.75.5-40 to +85SOIC(N)/8$1.27 @1k
Quality and Environmental Data
Related Products
  • MAX869L:2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
  • MAX891L:Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
  • MAX894L:Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX890LC/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX890LESAActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX890LESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX890LESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX890LESA-TNo Longer AvailableMAX890LESA+TSOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX890LESA/V+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX890LESA/V+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
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