MAX14691
PRODUCTIONHigh-Accuracy, Adjustable Power Limiter
Industry's First Dynamic Power Limiter with Thermal Controlled Current Foldback
- Part Models
- 2
- 1ku List Price
- Starting From $4.40
Overview
- Robust, High-Power Protection Reduces System Downtime
- Wide Operating Input Range: +5.5V to +58V
- -60V Negative Input Tolerance (for -60V External pFET Rating)
- Low 31mΩ (typ) RON
- Reverse Current-Blocking Protection with External pFET
- Enables Fast Startup and Brownout Recovery
- Thermal Foldback Current-Limit Protection
- Dual-Stage Current Limiting
- 1.0x Startup Current (MAX14691)
- 1.5x Startup Current (MAX14692)
- 2.0x Startup Current (MAX14693)
- Flexible Design Enables Reuse and Less Requalification
- Adjustable OVLO and UVLO Thresholds
- Programmable Forward Current Limit From 0.6A to 6A 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
The MAX14691–MAX14693 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 pMOSFET, the devices also protect downstream circuitry from voltage faults up to +58V, -60V (for -60V external pFET rating). The devices feature a low, 31mΩ, 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 devices 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 MAX14691–MAX14693 also feature reverse-current and overtemperature protection. The devices are available in a 20-pin (5mm x 5mm) TQFN package and operate over the -40°C to 125°C temperature range.
Applications
- Control and Automation
- High-Power Applications
- Human Machine Interfaces
- Industrial Power Systems
- Motion System Drives
Documentation
Data Sheet 1
Technical Articles 2
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX14691ATP+ | 20-Lead TQFN (5mm x 5mm x 0.75mm) | ||
| MAX14691ATP+T | 20-Lead TQFN (5mm x 5mm x 0.75mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Overvoltage & Overcurrent Protectors 1 | ||
| MAX14588 | NOT RECOMMENDED FOR NEW DESIGNS | 1A Adjustable Overcurrent and Overvoltage Protector with High Accuracy |
Evaluation Kits
Evaluation Kit for the MAX14691–MAX14693
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