Overview
The STEF12PUR is an integrated electronic fuse designed and manufactured by STMicroelectronics. This device is optimized for monitoring output current and input voltage, specifically tailored for 12 V power rails. It protects electronic circuitry from overcurrent and overvoltage conditions, featuring a controlled delay and turn-on time. Unlike traditional mechanical fuses, the STEF12PUR does not degrade in performance after short-circuit or thermal protection interventions and can be reset by recycling the supply voltage or using the Enable pin.
Key Specifications
| Attribute | Value |
|---|---|
| Voltage Rating | 12 V |
| Current Rating | 3.6 A (typ) |
| Operating Temperature Range | -40°C to +125°C |
| Average Bias Current-Max | 2 mA |
| Dimension | L 3mm x W 3mm |
| Storage Temperature Range | -65°C to +150°C |
| Package Style | DFN-10 |
| Mounting Method | Surface Mount |
| N-channel on-resistance (typ) | 53 mΩ |
| Output clamp voltage (typ) | 15 V |
| Thermal latch (typ) | 165 °C |
Key Features
- Continuous current (typ): 3.6 A
- N-channel on-resistance (typ): 53 mΩ
- Enable/Fault functions
- Output clamp voltage (typ): 15 V
- Undervoltage lockout
- Short-circuit limit
- Overload current limit
- Controlled output voltage ramp
- Thermal protection circuit with signal on the Fault pin
- Available in DFN10 (3x3 mm) package
- UL2367 Recognized - File N. E468771
Applications
The STEF12PUR is suitable for a variety of applications, including:
- Communications equipment
- Computers and peripherals
- Industrial applications
Q & A
- What is the voltage rating of the STEF12PUR?
The voltage rating of the STEF12PUR is 12 V.
- What is the typical current rating of the STEF12PUR?
The typical current rating of the STEF12PUR is 3.6 A.
- What is the operating temperature range of the STEF12PUR?
The operating temperature range of the STEF12PUR is -40°C to +125°C).
- What type of package does the STEF12PUR come in?
The STEF12PUR comes in a DFN-10 package with dimensions of 3mm x 3mm).
- Does the STEF12PUR have thermal protection?
Yes, the STEF12PUR is equipped with a thermal protection circuit that signals to the board monitoring circuits through a Fault pin).
- How does the STEF12PUR handle short-circuit conditions?
If a continuous short-circuit is present, the STEF12PUR limits the output current to a safe value and then goes into an open state. It can be reset by recycling the supply voltage or using the Enable pin).
- Is the STEF12PUR RoHS compliant?
Yes, the STEF12PUR is RoHS compliant with an Ecopack2 grade).
- What are some common applications for the STEF12PUR?
The STEF12PUR is commonly used in communications equipment, computers and peripherals, and industrial applications).
- Does the STEF12PUR have an undervoltage lockout feature?
Yes, the STEF12PUR includes an undervoltage lockout feature).
- Is the STEF12PUR UL recognized?
Yes, the STEF12PUR is UL2367 Recognized with File N. E468771).
