Electrical scope
The manufacturer lists 4.5–40 V input, 150 kHz switching, a 2 A current class and a 1.235 V feedback reference.
Manufacturer model / selection entry
XL4001 Buck Converter IC – 40V, 2A, CC Loop
XL4001 is a 150 kHz, 2 A-class buck-converter IC with a 4.5–40 V input range, SOP8-EP package and an integrated constant-current control loop.
Buyer and engineer answers
What must be established before ordering
Statements below are scoped to the named manufacturer source. Commercial availability is deliberately separate.
Package and ordering
The package is SOP8-EP; the exposed pad is part of the electrical and thermal design. XL4001E1 is the distinct planned orderable code.
IC and application boundary
An integrated constant-current loop is a control function in the IC. It does not turn the part itself into a completed CC/CV charger module.
Publication safeguard
The claim boundary travels with the page.
Explain the IC’s constant-current control loop without describing it as a finished charging module.
Published exact parts1
Evidence-backed families1
Procurement FAQ
Questions this exact page answers
Compatibility answers remain conditional where the source evidence does not establish a direct replacement.
How is XL4001 different from XL4015?
XL4001 includes a constant-current loop and differs in input range, frequency, current class and package.
Does it provide CC and CV?
It includes constant-voltage and constant-current control functions; actual regulation depends on the external circuit.
What is SOP8-EP?
It is an eight-lead small-outline package with an exposed pad that must follow the manufacturer layout and thermal guidance.
Evidence-cleared exact records
Choose the manufacturer and complete code
Each link is a separate Passed catalog record with valid datasheet evidence.
XL4001E1
XLSEMI · SOP8-EP
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