FPF1321UCX

The FPF1321 is a Dual-Input Single-Output (DISO) load switch consisting of two sets of slew-rate controlled, low on-resistance, P-channel MOSFET switches and integrated analog features. The slew-rate-controlled turn-on characteristic prevents inrush current and the resulting excessive voltage droop on the power rails. The input voltage range operates from 1.5 V to 5.5 V to align with the requirements of low-voltage portable device power rails. FPF1321 performs seamless power-source transitions between two input power rails using the SEL pin with advanced break-before-make operation. FPF1321 has a TRCB function to block unwanted reverse current from output to input during ON/OFF states. The switch is controlled by logic inputs of the SEL and EN pins, which are capable of interfacing directly with low-voltage control signals (GPIO). FPF1321 has 65 0 on-chip load resistor for output quick discharge when EN is LOW. FPF1321 is available in 1.0 mm x 1.5 mm WLCSP, 6-bump, with 0.5 mm pitch. FPF1321B is available in 1.0 mm x 1.5 mm WLCSP, 6-bump, 0.5 mm pitch with backside laminate.

• DISO Load Switches
• Input Supply Operating Range: 1.5 V - 5.5 V
• Ron 50 m? at V1N=3.3 V Per Channel (Typical)
• True Reverse-Current Blocking (TRCB)
• Fixed Slew Rate Controlled 130 ps for < 1 pF Cout
• lsw: 1.5 A Per Channel (Maximum)
• Quick Discharge Feature on FPF1321
• Logic CMOS 10 Meets JESD76 Standard for GPIO Interface and Related Power Supply Requirements
• ESD Protected:
  • Human Body Model: >6 kV
  • Charged Device Model: >1.5 kV
  • IEC 61000-4-2 Air Discharge: >15 kV
  • IEC 61000 4-2 Contact Discharge: >8 kV