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MAX14527, MAX14528
Adjustable Overvoltage Protector with High Accuracy

Superior Input Voltage Protection with Maximum Flexibility


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 116kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
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.

Key Features   Applications/Uses
  • 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
 

Key Specifications:  Overvoltage Protection Controllers
Part Number Channels VIN
(V)
VIN
(V)
Over Voltage Trip Level
(V)
VGATE
(V)
tGATE (On)
(ms)
tGATE (Off)
(µs)
Features Package/Pins Price
min max See Notes
MAX14527  1 2.2 28 5.75 5.75 0.7 1.3 Internal Charge Pump
TDFN-EP/8
$0.90 @1k
MAX14528  6.76
5.75
6.76
TDFN-EP/8
$0.90 @1k
See All Overvoltage Protection Controllers (47)

Diagram
MAX14527, MAX14528: Typical Application Circuit
Typical Application Circuit

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    Document Ref.: 19-4357; Rev 0; 2008-11-18
    This page last modified: 2009-01-26


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