STEF12SPUR

STEF12SPUR is an integrated electronic fuse optimized to monitor the 12VDC power lines. When connected in series to the main power rail, it is able to precisely detect and react to overcurrent and overvoltage conditions. When an overload condition occurs, the device limits the output current to a safe value defined by the user. If the anomalous overload condition persists, the device goes into an open state, disconnecting the load from the power supply. In case of overvoltage on the input, the device regulates the output to a preset safe value. Undervoltage lockout prevents the load from malfunction, keeping the device off if the rail voltage is too low. It features an adjustable turn-on slew-rate, which is useful to keep the in-rush current under control during startup and hot-swap operations. It is used in applications such as hard disk and SSD drives, hard disk array, hot-swap board, hot-plug protection.

• Adjustable current limit, latch-off thermal protection
• Input undervoltage lockout, low inrush current during startup
• En/fault pin, adjustable slew rate for output voltage
• Output overvoltage clamp is 15V typical at (VCC = 17V, TJ = 25°C)
• On-resistance is 40 ohm typ at (TJ = 25°C)
• Output voltage ramp time is 0.85ms typ at (from 10% to 90% of VOUT, no Cdv/dt)
• Bias current is 0.37mA typ at (Device operational, TJ = 25°C)
• Gate driver voltage is 5V typ at (VG - VOUT, TJ = 25°C)
• Short-circuit current limit is 2.4A typical at (RLim = 22 ohm, TJ = 25°C)
• Operating junction temperature range from -40°C to 125°C, DFN10 package