PT4105C Texas Instruments PT4105C isolated DC-DC converter module delivers a regulated 12V output at 1.25A (15W) from an 18-40V input. Surface mount package with 1500VDC isolation.
Mfr Part #:

PT4105C

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
Texas Instruments PT4105C isolated DC-DC converter module delivers a regulated 12V output at 1.25A (15W) from an 18-40V input. Surface mount package with 1500VDC isolation.
Total Stock: 6 pcs
$ Price Range: $74.39

PT4105C Available from 1 distributor

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PT4105C Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Current Limit
Dimensions
Efficiency
Features
Flammability Rating
Height
Input Voltage Range
Inrush Current
Isolation Capacitance
Isolation Resistance
Isolation Voltage
Lead Style
Length
Line Regulation
Load Regulation
Medical Grade
Mounting Type
Number of Outputs
Operating Temperature
Output Over/Undershoot
Output Voltage
Power (Watts)
Remote On/Off (Off threshold)
Remote On/Off (On threshold)
Ripple & Noise
Short Circuit Current
Switching Frequency
Termination Style
Thermal Resistance
Transient Response
Type
Voltage
Weight
Width

PT4105C Description

Short technical summary and product information.

The Texas Instruments PT4105C is a 15-watt isolated DC-DC converter module from the PT4100 series. It provides a regulated 12V output at up to 1.25A from a wide 18V to 40V input range with a typical efficiency of 82%. Key protections include over-temperature shutdown and short-circuit protection.

 

Designed for telecom and industrial applications, the converter features 1500VDC input-to-output isolation, ensuring safety and noise reduction in sensitive systems. Typical load regulation is ±0.4% and line regulation is ±0.2%.

 

The part is housed in a 6-SMD surface mount package with 5 leads measuring 42.4mm x 37.6mm x 8.6mm and weighs 28 grams. It operates from -40°C to +85°C with free air convection. The switching frequency is typically 650 kHz.

PT4105C Quick Information

Product Type: Isolated DC-DC Converter Module
Series: PT4105
Canonical Name: Texas Instruments PT4105C Isolated DC DC Converter, 12V Output, 15W
Subcategory: Single Output

PT4105C Compliance

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

PT4105C Estimated Pricing

Qty Low High
16+ $74.39 $74.39

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

PT4105C Features

  • 12V output at 1.25A from 15W.
  • Wide 18V to 40V input range.
  • 1500VDC input-to-output isolation.
  • Over-temperature and short-circuit protection.
  • Surface mount 6-SMD package.

PT4105C Applications

  • Suitable for telecom and datacom power systems.
  • For industrial control equipment supply rails.
  • Used in distributed power architectures.
  • Ideal for isolated 12V bus converter designs.

PT4105C FAQs

5 frequently asked questions generated from this part’s specifications.
What is the output voltage and current of the PT4105C?

The PT4105C provides a nominal 12V output at up to 1.25A maximum.

What is the input voltage range for this converter?

The input voltage range is 18V to 40V, with a typical input of 24V.

What protection features are included?

The PT4105C includes remote on/off control, over-temperature shutdown (OTP), and short-circuit protection (SCP).

What is the operating temperature range?

The operating temperature range is -40°C to +85°C with free air convection.

What is the package type of the PT4105C?

It is a surface mount device in a 6-SMD module with 5 leads.

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