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MAX4995A, MAX4995AF, MAX4995AL

50mA to 600mA Programmable Current-Limit Switches

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

Product Details

Key Features

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 50
Current Limit (mA) (max) 600
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 10
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.05
RON (Ω) (typ) 0.13
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +125
Package/Pins SOT23/6
TDFN/8
ULTRA TQFN/10
Budgetary
Price (See Notes)
1.6
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Simplified Block Diagram

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Parameters

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 50
Current Limit (mA) (max) 600
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 10
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.05
RON (Ω) (typ) 0.13
VSUPPLY (V) (min) 1.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +125
Package/Pins SOT23/6
TDFN/8
ULTRA TQFN/10
Budgetary
Price (See Notes)
1.6

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

Applications/Uses

  • Cell Phones
  • GPS
  • MP3 Players
  • SDIO Ports
  • USB Ports

Description

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.

Simplified Block Diagram

MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: Typical Operating Circuit MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: 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 .