/
/
/
Power Protection and Control 
/
Complete System Power Protection IC
/
Top ![]()
MAX14723
High-Accuracy, Adjustable Power Limiters
Industry's First Dynamic Power Limiters with Thermal Controlled Current Foldback
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Parametric specs for Overvoltage/Overcurrent Protectors with Internal MOSFETs
| VIN (V) (min) | 5.5 |
| VIN (V) (max) | 60 |
| Current Limit (A) (min) | 0.2 |
| Current Limit (A) (max) | 2 |
| # Channels | 1 |
| Internal Pwr. MOSFETs | NMOS |
| RON (mΩ) (typ) | 76 |
| Current Limit Accuracy (%) | 10 |
| Fault Response | Latchoff |
| Reverse Current Protect. | Yes |
| Fault Indicator | Yes |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TQFN-CU/20 |
| Budgetary Price (See Notes) | 2.51 |
View Less
Simplified Block Diagram
Technical Docs
| Data Sheet | High-Accuracy, Adjustable Power Limiters | Dec 07, 2017 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Overvoltage/Overcurrent Protectors with Internal MOSFETs
| VIN (V) (min) | 5.5 |
| VIN (V) (max) | 60 |
| Current Limit (A) (min) | 0.2 |
| Current Limit (A) (max) | 2 |
| # Channels | 1 |
| Internal Pwr. MOSFETs | NMOS |
| RON (mΩ) (typ) | 76 |
| Current Limit Accuracy (%) | 10 |
| Fault Response | Latchoff |
| Reverse Current Protect. | Yes |
| Fault Indicator | Yes |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | TQFN-CU/20 |
| Budgetary Price (See Notes) | 2.51 |
Key Features
- Robust, High-Power Protection Reduces System Downtime
- Wide Input Supply Range: +5.5V to +60V
- Programmable Input Supply Overvoltage Setting Up to 40V
- Thermal Foldback Current-Limit Protection
- Negative Input Tolerance to -60V (for -60V External pFET Rating)
- Low 76mΩ (typ) RON
- Reverse Current-Blocking Protection with External pFET
- Enables Safer Startup By Preventing Overheating of FETs
- Dual-Stage Current Limiting
- 1.0x Startup Current (MAX14721)
- 1.5x Startup Current (MAX14722)
- 2.0x Startup Current (MAX14723)
- Flexible Design Enables Reuse and Less Requalification
- Adjustable OVLO and UVLO Thresholds
- Programmable Forward Current Limit From 0.2A to 2A with ±15% Accuracy Over Full Temperature Range
- Normal and High-Voltage Enable Inputs (EN and Active-Low HVEN)
- Protected External pFET Gate Drive
- Saves Board Space and Reduces External BOM Count
- 20-Pin, 5mm x 5mm TQFN Package
- Integrated nFET
Applications/Uses
- Control and Automation
- High-Power Applications
- Human Machine Interfaces
- Industrial Power Systems
- Motion System Drives
Description
The MAX14721–MAX14723 adjustable overvoltage, undervoltage, and overcurrent protection devices guard systems against overcurrent faults in addition to positive overvoltage and reverse-voltage faults. When used with an optional external p-channel MOSFET, the devices also protect downstream circuitry from voltage faults up to +60V, -60V (for -60V external pFET rating). The devices feature a low, 76mΩ, on-resistance integrated FET.
During startup, the devices are designed to charge large capacitances on the output in a continuous mode for applications where large reservoir capacitors are used on the inputs to downstream devices. Additionally, the MAX14721–MAX14723 feature a dual-stage, current-limit mode in which the current is continuously limited to 1x, 1.5x, and 2x the programmed limit, respectively, for a short time after startup. This enables faster charging of large loads during startup.
The MAX14721–MAX14723 also feature reverse-current and overtemperature protection. The devices are available in a 20-pin (5mm x 5mm) TQFN package and operate over a -40°C to 125°C temperature range.
During startup, the devices are designed to charge large capacitances on the output in a continuous mode for applications where large reservoir capacitors are used on the inputs to downstream devices. Additionally, the MAX14721–MAX14723 feature a dual-stage, current-limit mode in which the current is continuously limited to 1x, 1.5x, and 2x the programmed limit, respectively, for a short time after startup. This enables faster charging of large loads during startup.
The MAX14721–MAX14723 also feature reverse-current and overtemperature protection. The devices are available in a 20-pin (5mm x 5mm) TQFN package and operate over a -40°C to 125°C temperature range.
Technical Docs
| Data Sheet | High-Accuracy, Adjustable Power Limiters | Dec 07, 2017 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Request a Quote