myMectronic
myMectronic

A Premier B2B Part Search

ONSEMI FPF2109 Load Switch

The FPF2109 is a load switch designed for system protection in portable devices such as cell phones, GPS devices, and MP3 players. It features a wide input voltage range of 1.8 to 5.5V, controlled turn-on, and a current limit of 200mA. Equipped with thermal shutdown, undervoltage lockout, and fault reporting through the FLAGB pin, it ensures reliable operation against over-current and thermal faults. Its compact 5-pin SOT23 package allows efficient integration into space-constrained circuits for portable electronics.

Authorized Distributors
Source:DigiKey
Part No:FPF2109
Stock:6413
Inv Date:06-10-2026
Price: Unit price: $1.3
Buy/RFQ:
Source:DigiKey
Part No:FPF2109
Stock:8259
Inv Date:06-10-2026
Price: Unit price: $0.93
Buy/RFQ:
Part No:FPF2109
Stock:23217
Inv Date:06-11-2026
Price: Unit price: $1.3
Buy/RFQ:
Part No:FPF2109
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.818
Buy/RFQ:
Part No:FPF2109
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.818
Buy/RFQ:

ONSEMI FPF2109 Load Switch Specifications:

  • Input Voltage Range: 1.8V to 5.5V
  • Current Limit: 200mA
  • Switching Time: Turn on 25μs, Turn off 50μs
  • Thermal Shutdown: YES, activates above 130°C
  • Undervoltage Lockout: Threshold at 15-17V
  • Package: 5-pin SOT23
  • Operating Temperature: -40°C to +85°C
  • Isolation: Reverse current blocking when off
  • Fault Indicator: FLAGB active LOW, open-drain output
  • Minimal quiescent current: Low microamp range
  • Protection: Overcurrent, thermal, undervoltage

Buy the ON Semiconductor Series IntelliMAX Load Switch: FPF2109

Purchase the ON Semiconductor FPF2109 load switch online today and ensure your portable device designs are protected against over-current and thermal faults. With a wide input voltage range of 1.8V to 5.5V and a current limit of 200mA, it is ideal for compact electronic systems like cell phones and GPS devices. The device features thermal shutdown, undervoltage lockout, and fault reporting via the FLAGB pin, providing reliable system protection. Its small SOT23 package makes it perfect for space-constrained applications, ensuring durability and efficient performance in portable applications.

Get ON Semiconductor FPF2109 today—built for precision and long-lasting durability in portable electronics.

Frequently Asked Questions

Where can I buy ONSEMI FPF2109?

You can click on the BUY or RFQ button to purchase FPF2109 from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part FPF2109?

You can download the FPF2109 datasheet or visit the ONSEMI website for support.

Who is the manufacturer of FPF2109?

ONSEMI

ONSEMI Part List

Browse and search other ONSEMI parts, locate datasheets and stock

Sponsored by