MAX14672
Bidirectional Current-Blocking, High-Input Overvoltage Protectors with Adjustable OVLO
OVP Enables Multiple, Faster Charging Power Sources with High Voltage
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Overview
Features and Benefits
- Protect High-Power Portable Devices
- Wide Operating Input Voltage Protection from +3V to +28V
- +100V Surge Capability
- 4.5A Continuous Current Capability (WLP Package)
- Integrated 65mΩ (typ) n-Channel MOSFET Switch (WLP Package)
- Flexible Overvoltage Protection Design
- Wide +5V to +22V Adjustable OVLO Threshold Range
- Active-Low ACOK and ACOK Indicate Input is in Range
- OTG Enable Allows OUT to Supply IN
- Preset Accurate Internal OVLO Thresholds:
- 6.8V ±3% (MAX14670)
- 15.5V ±3% (MAX14671)
- 5.825V ±3% (MAX14672)
- 22V ±3% (MAX14673)
- Additional Protection Features Increase System Reliability
- OUT-IN Reverse Bias Blocking Capability
- Soft-Start to Minimize Inrush Current
- Internal 15ms Startup Debounce
- Thermal Shutdown Protection
- Space Saving
- 15-Bump, 1.6mm x 2.1mm, WLP Package
- 10-Pin, 3mm x 3mm, TDFN Package
Product Details
The MAX14670–MAX14673 provide protection to valuable consumer circuits against positive voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +100V. The device is able to disconnect the system from its output terminal when wrong input conditions are detected.
The MAX14670–MAX14673 overvoltage protection devices feature low 65mΩ (typ), WLP package on-resistance (RON) internal FETs, effectively minimizing the voltage drop across the device. 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 5V and 22V. The devices automatically choose the accurate internal trip thresholds when the overvoltage lockout input (OVLO) is set lower than the external OVLO select voltage. The internal OVLO are preset to typical 6.8V (MAX14670), 15.5V (MAX14671), 5.825V (MAX14672), or 22V (MAX14673).
The MAX14670–MAX14673 feature reverse bias blocking capability. Unlike other overvoltage protectors, when the MAX14670–MAX14673 are disabled, the voltage applied to OUT does not feed back into IN. These devices also feature an OTG enable pin that allows OUT voltage to supply IN. The MAX14670–MAX14673 also have thermal shutdown protection against over load conditions.
The MAX14670–MAX14673 are specified over the extended -40°C to +85°C temperature range. The MAX14670/MAX14671 are available in a 15-bump WLP package and the MAX14672/MAX14673 are available in a 10-pin TDFN package.
Applications
- Charging USB Hosts
- e-Readers
- PC Notebooks
- Smart Phones
- Tablets
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 (1)
Documentation & Resources
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 |
|---|---|---|---|---|
| MAX14672ETB+ | Material Declaration | Reliability Data | Thin Dual Flatpack No Leads, Exposed Pad | |
| MAX14672ETB+T | Material Declaration | Reliability Data | Thin Dual Flatpack No Leads, Exposed Pad | |
| Wafer Fabrication Data |
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