MAX14528

Adjustable Overvoltage Protector with High Accuracy

Superior Input Voltage Protection with Maximum Flexibility


Please check latest availability status for a specific part variant.

Description

The MAX14527/MAX14528 overvoltage protection devices feature a low 100mΩ (typ) RON internal FET and protect low-voltage systems against voltage faults up to +28V. When the input voltage exceeds the overvoltage threshold, the internal FET is turned off to prevent damage to the protected components.

The overvoltage protection threshold can be adjusted with optional external resistors to any voltage between 4V and 8V. With the OVLO input set below the external OVLO select voltage, the MAX14527/MAX14528 automatically choose the internal ±2.5% accurate trip thresholds. The internal overvoltage thresholds (OVLO) are preset to 5.75V typical (MAX14527) or 6.76V typical (MAX14528). The MAX14527/MAX14528 are also protected against overcurrent events with an internal thermal shutdown.

The MAX14527/MAX14528 are offered in a small, 8-pin TDFN-EP package and operate over the -40°C to +85°C extended temperature range.
MAX14527, MAX14528: Typical Application Circuit MAX14527, MAX14528: Typical Application Circuit Enlarge+

Key Features

  • Input Voltage Protection Up to +28V
  • Preset Internal ±2.5% Accurate OVLO Thresholds
    • 5.75V (MAX14527)
    • 6.76V (MAX14528)
  • Adjustable Overvoltage Protection Trip Level
  • Integrated 100mΩ (typ) n-Channel MOSFET Switch
  • Soft-Start to Minimize In-Rush Current
  • Automatic Overvoltage Protection Trip-Level Selection
  • Internal 15ms Startup Delay
  • Thermal Shutdown Protection
  • 8-Pin TDFN (2mm x 2mm) Package
  • -40°C to +85°C Operating Temperature Range

Applications/Uses

  • Cell Phones
  • Media Players
  • PDAs and Palmtop Devices

See parametric specs for Overvoltage Protection Controllers (74)


Part NumberChannelsVIN
(V)
VIN
(V)
Over Voltage Trip Level
(V)
VGATE
(V)
tGATE (On)
(ms)
tGATE (Off)
(µs)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX14527 12.2285.755.750.71.3
TDFN/8
$2.52 @1k
MAX14528 6.76
5.75
6.76
TDFN/8

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.
Product Reliability Reports: MAX14528.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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 >
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