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NCT3941S The Nuvoton Technology NCT3941S is a linear fan driver designed for noise and power-sensitive applications. It delivers up to 500mA output current with a low dropout voltage.
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NCT3941S

Available from 2 distributors
Mfr Name: Nuvoton Technology
Nuvoton Technology
The Nuvoton Technology NCT3941S is a linear fan driver designed for noise and power-sensitive applications. It delivers up to 500mA output current with a low dropout voltage.
✓ Total Stock: 1,113 pcs

NCT3941S Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
113 pcs
On Request
113 pcs On Request 1 On Request On Request 11+ 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.

NCT3941S Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Halogen Free
Mounting Type
Output Voltage
Package / Case
Quiescent Current
SVHC Present
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NCT3941S Description

Short technical summary and product information.

The NCT3941S from Nuvoton Technology is a linear fan driver designed for noise-sensitive or power-sensitive applications requiring system cooling. This device features a low quiescent current and a low dropout linear regulator, utilizing a P-channel MOSFET to power a DC fan.

 

The output voltage dynamically adjusts the DC fan speed by following 4 times the voltage of the VSET pin. It can deliver a continuous output current of up to 500mA, with a current limit trip threshold of 1.6A. The dropout voltage is specified at 0.5V when delivering 0.5A output current.

 

This fan driver is suitable for applications such as projectors, peripheral add-in cards, motherboards, and battery-powered systems. It is available in a SOP8-EP package with an exposed pad for improved thermal performance. The device also includes short circuit and over-temperature protections, contributing to its reliability.

 

Key features include dynamic fan speed control via VSET, low external component count, and ease of use. The NCT3941S is designed to be a low-cost solution for thermal management needs.

NCT3941S Quick Information

Product Type: Linear Fan Driver
Canonical Name: Nuvoton Technology NCT3941S Linear Fan Driver
Subcategory: Thermal Management

NCT3941S Compliance

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

NCT3941S Features

  • Output voltage follows 4x VSET.
  • 0.5V dropout at 0.5A output.
  • Up to 500mA continuous current.
  • Low quiescent current.
  • SOP8-EP package for surface mount.

NCT3941S Applications

  • Suitable for projectors.
  • Used in add-in cards.
  • Applicable to motherboards.
  • Designed for battery systems.

NCT3941S FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output voltage control mechanism for the NCT3941S?

The output voltage follows 4 times the voltage of the VSET pin, allowing for dynamic adjustment of the DC fan speed.

What is the maximum continuous output current of the NCT3941S?

The NCT3941S can deliver a continuous output current of up to 500mA.

What is the dropout voltage for the NCT3941S at 0.5A?

The dropout voltage is 0.5V at an output current of 0.5A.

What is the current limit trip threshold for the NCT3941S?

The current limit trip threshold is 1.6A.

What is the quiescent current of the NCT3941S when enabled?

The quiescent current is 3uA when the FON# pin is enabled.

What package type is the NCT3941S available in?

The NCT3941S is available in a SOP8-EP package.

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