MAX892L:Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

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

The MAX891L/MAX892L smart, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications. These switches operate with inputs from 2.7V to 5.5V, making them 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 MAX891L/MAX892L's maximum current limits are 500mA and 250mA, respectively. The current limit through the switch is programmed with a resistor from SET to ground. When the switch is on, the quiescent supply current is a low 13µA. When the switch is off, the quiescent current decreases to 0.1µA. The MAX891L/MAX892L are available in 8-pin µMAX® packages.

Key Features
  • Ultra-Small µMAX Package-Only 1.11mm High
  • 2.7V to 5.5V Input Range
  • Programmable Current Limit
  • Low 13µA Quiescent Current at VIN = 3.3V, 0.1µA Switch Off
  • Thermal Shutdown
  • FAULT-bar Indicator Output
  • On-Resistances:
MAX891L, MAX892L: Typical Operating Circuit
MAX891L, MAX892L: Typical Operating Circuit
Applications/Uses
  • Access Bus Slots
  • PCMCIA Slots
  • Portable Equipment
DataSheet
titleDownload file
MAX891L-MAX892L Data SheetMAX891L-MAX892L.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
MAX891L1500500Yes15Resistor0.10.122.75.5-40 to +85µMAX/8$1.47 @1k
MAX892L2502500.050.25µMAX/8
Quality and Environmental Data
Related Products
  • MAX869L:2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
  • MAX894L:Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
  • MAX890L:1.2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX892LC/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX892LEUANo Longer AvailableMAX892LEUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX892LEUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX892LEUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX892LEUA-TNo Longer AvailableMAX892LEUA+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX891L-MAX892L.pdf MAX892L
MAX892L.pdf MAX892L
MAX891L-MAX892L.pdf MAX892L