STMicroelectronics STEF033 Electronic Fuse for 3.3V Line
STMicroelectronics STEF033 Electronic Fuse for 3.3V Line is optimized for monitoring output current and input voltage. The STEF033 is connected in series to the 3.3V rail and is able to protect the electronic circuitry on its output from overcurrent and overvoltage. The STEF033 has controlled delay and turn-on time. When an overload condition occurs, the device limits the output current to a predefined safe value. If the anomalous overload condition persists, it goes into an open state, disconnecting the load from the power supply.
Features
- Continuous current typ.: 3.6A (DFN), 2.5A (Flip Chip)
- N-channel on resistance (typ): 40mΩ (DFN), 25mΩ (Flip Chip)
- Enable/Fault functions
- 4.5V typical output clamp voltage
- Undervoltage lockout
- Short-circuit limit
- Overload current limit
- Controlled output voltage ramp
- 160°C (typ) thermal latch
- Uses tiny capacitors
- Latching and auto-retry versions
- -40°C to +125°C operative junction temperature
- Available in DFN10 3x3 and Flip Chip 9 bumps
Applications
- Hard disk drives
- Solid state drives (SSD)
- Hard disk and SSD arrays
- Computer
- DVD and Blu-Ray disc drivers
Block Diagram
Development Tool
STMicroelectronics AEK-MCU-C4MLIT3 MCU Evaluation Kit
Addresses automotive/transportation applications requiring automotive safety and security levels.
Publicado: 2018-04-05
| Actualizado: 2025-10-06