MAX17612A
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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Overview
Features and Benefits
- 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
Product Details
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.
Applications
- Condition Monitoring
- Factory Sensors
- Industrial Applications such as PLC, Network-Control Modules, Battery-Operated Modules
- Process Instrumentation
- Sensor Systems
- Weighing and Batching Systems
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (3)
Documentation & Resources
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
MAX17612A
MAX17612B
MAX17612C
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX17612AATB+ | Material Declaration | Reliability Data | 10-LFCSP-3X3X0.75 | |
| MAX17612AATB+T | Material Declaration | Reliability Data | 10-LFCSP-3X3X0.75 | |
| Wafer Fabrication Data |
Support & Discussions
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.