TPS259230DRCR

The TPS25923x series of electronic fuses are highly integrated circuit protection and power management solutions in a small package. These devices use very few external components and offer multiple protection modes. They can effectively prevent overloads, short circuits, voltage surges, excessive inrush currents, and reverse currents. The current limit level can be set via an external resistor. The internal clamping circuit can limit overvoltage to a safe fixed maximum without the need for external components. Applications with special voltage ramp requirements can use a single capacitor to set the dV/dT to ensure an appropriate output ramp rate. Many systems, such as SSDs, prohibit the stored capacitive energy from flowing back through the FET diode to the step-down or short-circuit input bus. The BFET pin is dedicated to such systems. An external NFET can form a "back-to-back (B2B)" connection with the TPS25923x output, and the gate driven by the BFET can prevent current from flowing back from the load to the power supply.

Applications

• Adapter-powered devices
• Hard disk drives (HDD) and solid-state drives (SSD)
• Set-top boxes
• Server/auxiliary (AUX) power supplies
• Fan control
• PCI/PCIe cards

Key features

• 5V eFuse, V_ABSMAX = 20V
• Integrated 28mΩ on-resistance MOSFET
• 6.1V fixed overvoltage clamp
• 1A to 5A adjustable current ILIMIT
• ±8% ILIMIT accuracy (at 3.7A)
• Reverse current blocking support
• Programmable OUT slew rate
• UVLO
• Integrated thermal shutdown
• UL2367 certification in progress
• Safe during single-fault testing (UL60950)
• Small package size - 10L (3mm×3mm) VSON