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

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

Product Details

Key Features

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 200
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.2
RON (Ω) (typ) 0.07
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
1
View Less

Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 200
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.2
RON (Ω) (typ) 0.07
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
1

Key Features

  • +2.7V to +5.5V Input Range
  • Programmable Current Limit
    • 0.2A to 1.2A Range
    • ±20% Accuracy
  • 1.2A Continuous Load Current
  • 1.8A Short-Circuit Current
  • Low Quiescent Current
    • 13µA at VIN = 3.3V
    • 0.1µA with Switch Off
  • Thermal Shutdown
  • Active-low FAULT Indicator Output
  • 0.07Ω On-Resistance

Applications/Uses

  • Access Bus Slots
  • PCMCIA Slots
  • Portable Equipment
  • USB Hubs
  • USB Ports

Description

The MAX893L 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 temperature.

The MAX893L's maximum programmed current limit is 1.2A. The typical short-circuit current is 1.5 times the programmed current; therefore, a 1.2A programmed limit will result in a 1.8A short-circuit current limit. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 13µA. When the switch is off, the supply current decreases to 0.1µA.

The MAX893L is available in an 8-pin SO package.

Simplified Block Diagram

MAX893L: Typical Operating Circuit MAX893L: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.