To help personalise content, tailor your experience and help us improve our services, Bisinfotech.com uses cookies.
By navigating our site, you agree to allow us to use cookies, in accordance with our Privacy Policy.

STMicroelectronics’ STEF01 Programmable Electronic Fuse Now With Value-Added Features

STMicroelectronics fuse

STMicroelectronics enhances the benefits of fast-acting overload protection to applications at higher power ratings, launches the STEF01 programmable electronic fuse.

The new STEF01 programmable electronic fuse from STMicroelectronics powered by integrated low-RDS(ON)VIPower MOSFET is said to sustain up to 4A continuous current over a wide operating input-voltage range of 8V to 48V, with low insertion loss.

When connected in series to the main power rail, the STMicroelectronics STEF01 programmable electronic fuse protects the load against over-current and over-voltage.

The voltage is clamped to a user-defined maximum, preset with external resistors. Excessive current is restricted to the programmed safe limit by controlling the internal power MOSFET and folds back to a lower limit if a strong over-current or short-circuit is detected.

Key Nuggets of The New STEF01 programmable electronic fuse from STMicroelectronics includes:

  • The STEF01 leverages ST’s BCD8 high-voltage process to integrate value-added features, including dV/dt control to prevent excessive inrush current during startup or hot-swap insertion. This slows the output-voltage ramp-up time to at least 3ms, which can be increased if desired by connecting an external capacitor.
  • Programmable Under-Voltage Lockout (UVLO), also set using external components, allows the user to fine-tune the desired voltage-rail minimum value to suit the load requirements.
  • Thermal shutdown with latching or auto-retry, and maximum dissipated-power protection, which each prevent exceptionally high power from damaging the STEF01 when starting up into heavy capacitive loads, or during large load transients or short-circuits at high voltage.
  • There is also a power-good indicator, and an enable/fault pin that can be used as either a status monitor or to control the device.
  • A dedicated gate-driver output for controlling an external N-channel MOSFET simplifies implementation of reverse-current protection.

Key Applications Include

The STEF01 delivers flexible and convenient protection for a wide range of applications, including industrial hot-swap boards and control equipment, circuit breakers, power buses, security or lighting systems, telecom power modules, or distributed power systems.

Availability and Pricing

The STEF01 is available now in 14-pin HTSSOP14 package, priced from $1.00 for orders of 1000 pieces. For further information please go to Click here.

For Further info about the new STEF01 programmable electronic fuse from STMicroelectronics: Click here 

Tags
Show More

Related Articles