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FAN54120UC425X The FAN54120UC425X from ON Semiconductor is a 500mA USB-compatible linear charger for single-cell Li-Ion or Li-Polymer batteries. It supports fast charge, pre-charge, and float charge states.
Mfr Part #:

FAN54120UC425X

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The FAN54120UC425X from ON Semiconductor is a 500mA USB-compatible linear charger for single-cell Li-Ion or Li-Polymer batteries. It supports fast charge, pre-charge, and float charge states.
✓ Total Stock: 43,000 pcs
$ Price Range: $0.75

FAN54120UC425X Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Flip Electronics ✓
Non-Authorised Inventory information
42,000 pcs
On Request
42000 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request On Request On Request On Request
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FAN54120UC425X Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Battery Pack Voltage
Charge Current
Conflict Minerals
Current
Fault Protection
Interface
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
SVHC Present
Supplier Device Package
Supplier Package
Voltage
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FAN54120UC425X Description

Short technical summary and product information.

The FAN54120UC425X is a fully integrated, single-cell Li-Ion or Li-Polymer battery charger designed for ease of use. It supports dead battery revival, pre-charge, fast charge, and float charge states, with a maximum charge current of 500mA and an operating voltage of 6V.

 

This charger features a ±0.5% charge voltage accuracy and +4% charge current accuracy. It includes true reverse current blocking and adaptive thermal regulation. The device supports JEITA safe-to-charge operation with an external NTC and offers 'Power Back' functionality to source accessories from the battery.

 

Available in a 6-DFN (2x2 mm) or 6-WLCSP (1.36x0.76 mm) package, the FAN54120UC425X is suitable for applications such as IoT devices, e-cigs, personal mobile devices, and toys. It requires no user interaction or active supervision, with an open-drain STAT pin providing charge and/or fault status indication.

FAN54120UC425X Quick Information

Product Type: Battery Charger
Canonical Name: FAN54120UC425X Single Cell Li-Ion Linear Charger
Subcategory: Linear Charger

FAN54120UC425X Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FAN54120UC425X Estimated Pricing

Qty Low High
1+ $0.75 $0.75

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

FAN54120UC425X Features

  • 500mA USB compatible linear charger.
  • Supports single-cell Li-Ion/Li-Polymer batteries.
  • ±0.5% charge voltage accuracy.
  • True reverse current blocking.
  • Available in DFN and WLCSP packages.

FAN54120UC425X Applications

  • Ideal for IoT devices.
  • Suitable for e-cigs and vapes.
  • Used in personal mobile devices.
  • Applicable for toys.
  • Point-of-sale instruments.

FAN54120UC425X FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum charge current for the FAN54120UC425X?

The maximum charge current is 500mA.

What is the operating voltage of the FAN54120UC425X?

The operating voltage is 6V.

What battery chemistry does the FAN54120UC425X support?

It supports Lithium Ion or Lithium Polymer batteries.

What is the charge voltage for this specific part number?

The charge voltage for the FAN54120UC425X is 4.25V.

What are the operating temperature limits?

The operating temperature range is -30°C to 85°C.

What fault protection features are included?

It includes over temperature, over voltage, and short circuit protection.

What package types are available for the FAN54120?

It is available in a 6-DFN (2x2 mm) and a 6-WLCSP (1.36x0.76 mm) package.

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