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


Please check latest availability status for a specific part variant.

Description

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.
MAX890, MAX890L: Typical Operating Circuit MAX890, MAX890L: Typical Operating Circuit Enlarge+

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

Applications/Uses

  • Access Bus Slots
  • PCMCIA Slots
  • Portable Equipment
Part Number Power Switches Current Limit
(mA)
Current Limit
(mA)
Fault Indicator Current Limit Accuracy
(%)
Current Limit Set By Lowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/Pins Budgetary
Price
min max typ min max See Notes
MAX890L  1 1200 1200 Yes 15 Resistor 0.32 0.075 2.7 5.5 -40 to +85
SOIC(N)/8
$1.27 @1k
See All Current Limit and USB Power Switches (81)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 298 Current-Limit Switch Is Digitally Programmable

Quality and Environmental Data

Product Reliability Reports: MAX890L.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

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