FPF3488: SIDO Over-Voltage Protection Load Switch

The FPF3488 features a Single Input Dual Output (SIDO) power switch, which offers surge protection and Over-Voltage Protection (OVP), to protect downstream components and enhancing overall system robustness.

Channel one (VBUS to VOUT) is an active-low, 28 V/3.5 A rated, power MOSFET switch with an internal clamp supporting ±100 V surge protection, fixed OVP at 13.9 V (±400 mV). Channel two (VBUS to SYS) is a active-high, 6 V/6 A rated, power MOSFET, fixed OVP at 5.25 V (±250 mV) and Reverse Current Blocking (RCB) during its OFF State.

POK is paired with always ON LDO to power downstream devices when VBUS is greater than 2.7V, regardless of OVLO, EN1 and EN2 State. This provides system power supply without battery.

The FPF3488 is available in a 28-bump, 1.67 mm x 2.96 mm Wafer-Level Chip-Scale Package (WL-CSP) with 0.4 mm pitch.

Features

• Single Input Dual Output (SIDO) Switch
  • VBUS to VOUT Path
  • VBUS to SYS Path
• V_BUS to V_OUT Path
• V_BUS to SYS Path
• Surge Protection under IEC 61000-4-5
  • VBUS: ±100 V
• V_BUS: ±100 V
• Input Voltage Range
  • VBUS: 2.7 V ~ 13.5 V
• V_BUS: 2.7 V ~ 13.5 V
• Max. Continuous Current Capability
  • VOUT Path: 3.5 A
  • SYS Path: 6 A
• V_OUT Path: 3.5 A
• SYS Path: 6 A
• Ultra Low On-Resistance
  • VOUT Path: Typ. 28 mΩ
  • SYS Path: Typ. 33 mΩ
• V_OUT Path: Typ. 28 mΩ
• SYS Path: Typ. 33 mΩ
• Over-Voltage Protection (OVP)
  • VBUS: 13.9 V ±400 mV
  • VIF: 5.25 V ±250 mV
• VBUS: 13.9 V ±400 mV
• VIF: 5.25 V ±250 mV
• Always ON LDO Output POK for V_BUS Detection and System Power Up without Battery
• Active LOW Control for V_BUS to VOUT Path
• Active HIGH Control for V_BUS to SYS Path
• Active HIGH Control for Device Shutdown
• CMOS output FLAG for VBUS to SYS Path
• RCB for VBUS to SYS Path
• Over-Temperature Protection (OTP)