MAX17612B

4.5V to 60V, 250mA Current-Limiter with OV, UV, and Reverse Protection

Highly Integrated System Protection Solution Enables Small and Robust Design


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Description

The Olympus series of ICs is the industry’s smallest and robust integrated system protection solutions. The MAX17612A/MAX17612B/MAX17612C adjustable overvoltage and overcurrent protection devices are ideal to protect systems against positive and negative input voltage faults up to +60V and -65V, and feature low 1.42Ω (typ) RON FETs.

The adjustable input overvoltage protection range is 5.5V to 60V and the adjustable input undervoltage protection range is 4.5V to 59V. The input overvoltage-lockout (OVLO) and undervoltage-lockout (UVLO) thresholds are set using external resistors. Additionally, the devices offer an internal input undervoltage threshold at 4.2V (typ).

The devices feature programmable current-limit protection up to 250mA; hence, controlling the inrush current at startup while charging high capacitances at the output. Current-limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the device prevents further increases in current by modulating the FET resistance. The devices can be programmed to behave in three different ways under current-limit condition: Autoretry, Continous, or Latch-off modes. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device and is read by an ADC.

MAX17612A and MAX17612C block current flowing in the reverse direction (i.e., from OUT to IN) whereas MAX17612B allows current flow in the reverse direction. The devices feature thermal shutdown protection against excessive power dissipation.

The devices are available in a small, 10-pin (3mm x 3mm) TDFN-EP package. The devices operate over the -40°C to +125°C extended temperature range.

MAX17612A, MAX17612B, MAX17612C: Typical Operating Circuit MAX17612A, MAX17612B, MAX17612C: Typical Operating Circuit Enlarge+

Key Features

  • Robust Protection Reduces System Downtime
    • Wide Input-Supply Range: +4.5V to +60V
    • Hot Plug-in Tolerant Without TVS up to 35V Input Supply
    • Negative Input Tolerance to -65V
    • Low RON 1.42Ω (typ)
    • Reverse Current-Blocking Protection
    • Thermal Overload Protection
    • Extended -40°C to +125°C Temperature Range
    • MAX17612A Enables OV, UV, and Reverse-Voltage Protection
    • MAX17612B Enables OV and UV Protection
    • MAX17612C Enables Reverse-Voltage Protection
  • Flexible Design Options Enable Reuse and Less Requalification
    • Adjustable OVLO and UVLO Thresholds
    • Programmable Forward-Current Limit: 10mA to 20mA with ±6% Accuracy and 20mA to 250mA with ±5% Accuracy Over Full Temperature Range
    • Programmable Overcurrent Fault Response: Autoretry, Continuous, and Latch-Off Modes
    • Smooth Current Transitions
  • Saves Board Space and Reduces External BOM Count
    • 10-Pin, 3mm x 3mm, TDFN-EP Package
    • Integrated FETs

Applications/Uses

  • Condition Monitoring
  • Factory Sensors
  • Industrial Applications such as PLC, Network-Control Modules, Battery-Operated Modules
  • Process Instrumentation
  • Sensor Systems
  • Weighing and Batching Systems
Part NumberChannelsVIN
(V)
VIN
(V)
Internal Pwr. MOSFETsRON
(mΩ)
Current Limit
(A)
Current Limit
(A)
Current Limit Accuracy
(%)
Fault ResponseReverse Current Protect.Fault IndicatorOper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX17612A NEW!14.560NMOS+NMOS14200.010.255LatchoffYesYes-40 to +125
THIN QFN (Dual)/10
$1.15 @1k
MAX17612B NEW!-
THIN QFN (Dual)/10
$1.10 @1k
MAX17612C NEW!Yes
THIN QFN (Dual)/10
$1.05 @1k
See All Overvoltage/Overcurrent Protectors with Internal MOSFETs (27)
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.


MAX17612AEVKIT: Evaluation Kit for the MAX17612A 4.5V to 60V, 250mA, Current-Limiter with OV, UV, and Reverse Protection
MAX17612BEVKIT: Evaluation Kit for the MAX17612B 4.5V to 60V, 250mA, Current-Limiter with OV, UV Protection
MAX17612CEVKIT: Evaluation Kit for the MAX17612C 4.5V to 60V, 250mA, Current-Limiter with Reverse Protection

Quality and Environmental Data

Request Reliability Report for: MAX17612B 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX17612BATB+
  • MAX17612BATB+T
  • 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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    Type ID Title
    Evaluation Board9972MAX17612CEVKIT Evaluation Kit for the MAX17612C 4.5V to 60V, 250mA, Current-Limiter with Reverse Protection
    Evaluation Board9970MAX17612BEVKIT Evaluation Kit for the MAX17612B 4.5V to 60V, 250mA, Current-Limiter with OV, UV Protection
    Evaluation Board9969MAX17612AEVKIT Evaluation Kit for the MAX17612A 4.5V to 60V, 250mA, Current-Limiter with OV, UV, and Reverse Protection