FPF34892: SIDO Over-Voltage Protection Load Switch

The FPF3489x 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 5.8V when OVSEL is tied to GND or 13.9V (FPF34891) / 10.4V (FPF34892) when OVSEL is floating.Channel two (VBUS to BAT) is an active-high, 5 V/6 A rated, power MOSFET, fixed OVP at VBUS is 5.8 V (±200 mV) and Reverse Current Blocking (RCB) during its OFF State. OVLO at BAT can be programmed by external resistors. The Over-Voltage status will be latched and FLAG will signal the fault by pulling low. To re-start this channel from OVLO, EN2 need to be toggled from LOW to HIGH.The FPF3489x 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 BAT Path
• V_BUS to V_OUT Path
• V_BUS to BAT 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
  • BAT Path: 6 A
• V_OUT Path: 3.5 A
• BAT Path: 6 A
• Ultra Low On-Resistance
  • VOUT Path: Typ. 28 mΩ
  • BAT Path: Typ. 33 mΩ
• V_OUT Path: Typ. 28 mΩ
• BAT Path: Typ. 33 mΩ
• Selectable OVLO for V_OUT Path
• Programmable OVLO for V_BAT
• Over-Voltage Protection (OVP)
  • VOUT Path: 10.4 V ± 300 mV (FPF34892)
  • VOUT Path: 5.8 V ± 200 mV (OVSEL = GND)
  • BAT Path: 5.8 V ± 200 mV
• V_OUT Path: 10.4 V ± 300 mV (FPF34892)
• V_OUT Path: 5.8 V ± 200 mV (OVSEL = GND)
• BAT Path: 5.8 V ± 200 mV
• Active LOW Control for V_BUS to V_OUT Path
• Active HIGH Control for V_BUS to BAT Path
• CMOS Output PowerGOOD for V_BUS to BAT Path
• RCB for V_BUS to BAT Path
• Over-Temperature Protection (OTP)