25P28V6P Programmable IC Chips M25P28V6P SOP-16
Electronic fuse for 12 V line
■ 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 latch (typ): 165 °C
■ Uses tiny capacitors
■ Operating junction temp. – 40 °C to 125 °C
■ Available in DFN10 (3 x 3 mm) package
■ Hard disk drives
■ Solid state drives (SSD)
■ Hard disk and SSD arrays
■ Set-top boxes
■ DVD and Blu-Ray disc drivers
25P28V6P: The STEF12 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 12 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time.
When an overload condition occurs, the STEF12 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. If a continuous short-circuit is present on the board, when power is re-applied the E-fuse initially limits the output current to a safe value and then again goes into an open state.
25P28V6P The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signalled to the board monitoring circuits through a signal on the Fault pin. Unlike the mechanical fuses, which must be physically replaced after a single event, the Efuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin. The companion chip for the 5 V power rails is also available with part number STEF05.