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FPF1321UCX The FPF1321UCX from On Semiconductor is a Dual-Input Single-Output (DISO) load switch. It operates from 1.5V to 5.5V and can handle up to 1.5A per channel.
Mfr Part #:

FPF1321UCX

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The FPF1321UCX from On Semiconductor is a Dual-Input Single-Output (DISO) load switch. It operates from 1.5V to 5.5V and can handle up to 1.5A per channel.
✓ Total Stock: 4,771 pcs
$ Price Range: $0.32

FPF1321UCX Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
2,642 pcs
On Request
2642 pcs On Request 1 On Request On Request 1639+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
129 pcs
On Request
129 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

FPF1321UCX Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Fault Protection
Features
Halogen Free
Input Type
Interface
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Ratio
Rds On (Typ)
SVHC Present
Supplier Device Package
Supplier Package
Switch Type
Voltage
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FPF1321UCX Description

Short technical summary and product information.

The FPF1321UCX is a Dual-Input Single-Output (DISO) load switch from On Semiconductor, designed for low-voltage portable device power rails. It operates within an input voltage range of 1.5V to 5.5V and supports a maximum switch current of 1.5A per channel. The device features a low on-resistance of typically 42mOhm at 3.3V VIN.

 

Key functionalities include True Reverse-Current Blocking (TRCB) to prevent unwanted current flow from output to input, and slew-rate controlled turn-on characteristics to prevent inrush current. Seamless power-source transitions between two input rails are managed via the SEL pin with break-before-make operation. The switch is controlled by logic inputs (SEL and EN) compatible with low-voltage GPIO signals.

 

The FPF1321UCX is available in a compact 6-WLCSP package, measuring 0.96x1.66mm, making it suitable for space-constrained applications. It is surface-mount compatible and operates across a temperature range of -40°C to 85°C.

 

Additional features include robust ESD protection exceeding 6kV (HBM) and compliance with Pb-Free and Halide Free standards.

FPF1321UCX Quick Information

Product Type: Load Switch
Canonical Name: FPF1321UCX Dual-Input Single-Output Advanced Power Switch
Subcategory: Power Distribution Switches

FPF1321UCX Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

FPF1321UCX Estimated Pricing

Qty Low High
1+ $0.32 $0.32

Estimated market price range - modelled values for guidance only, not live distributor offers.

FPF1321UCX Features

  • Dual-input single-output load switch.
  • Operates from 1.5V to 5.5V input.
  • 1.5A maximum current per channel.
  • Low 42mOhm typical on-resistance.
  • True Reverse-Current Blocking (TRCB) feature.

FPF1321UCX Applications

  • Suitable for portable devices.
  • Used in smartphones and tablet PCs.
  • Power supply for NFC SIM cards.
  • Enables seamless power source transitions.

FPF1321UCX FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the FPF1321UCX?

The operating voltage range is 1.5 V to 5.5 V.

What is the package type for the FPF1321UCX?

The package is 6-UFBGA, WLCSP with a supplier package of 6-WLCSP (0.96x1.66mm).

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What is the typical on-resistance of the FPF1321UCX?

Typical on-resistance is 50mOhm at 3.3V per channel (also specified as 42mOhm typically).

What is the maximum switch current per channel?

The maximum switch current per channel is 1.5A.

What ESD protection levels does the FPF1321UCX offer?

ESD protection includes >6kV HBM, >1.5kV CDM, >15kV IEC 61000-4-2 air discharge, and >8kV contact discharge.

Is the FPF1321UCX lead-free and halogen-free?

Yes, it is lead-free (Pb-Free) and halide free (Halogen Free).

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