PT4205C Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments PT4205C is an isolated DC/DC converter producing a regulated 3.3V output at up to 1.8A (6W) from a 18V to 36V input, nominally 24V. Housed in an 18-pin SIP module, it provides galvanic isolation for industrial and communications power supply designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- PT4205C Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Regulated 3.3V isolated output delivering up to 1.8A (6W) from a 24V nominal input, providing a complete single-chip isolated power solution for industrial 24V bus systems
- Input voltage range of 18V to 36V accommodating full industrial 24V rail variation without external pre-regulation or additional components
- 18-pin SIP module format enabling straightforward through-hole board mounting with built-in isolation, eliminating the need for a separate transformer design
Applications
The PT4205C is designed for field bus interface cards, industrial PLCs, and process control equipment that require a galvanically isolated 3.3V logic supply derived from a standard 24V industrial DC bus. Its 6W power delivery and 18V to 36V input tolerance also suit telecom line cards and distributed control systems where noise isolation between the high-voltage input and sensitive digital logic is critical.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | DC-DC REGULATED POWER SUPPLY MODULE |
| Input Voltage-Max | 36V |
| Input Voltage-Min | 18V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | R-XDSO-G18 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 1.8A |
| Output Voltage-Max | 3.432V |
| Output Voltage-Min | 3.168V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | GWDIP18,1.1,200 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | HYBRID |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Total Power Output-Max | 6W |
| Trim/Adjustable Output | YES |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage and maximum output current does the PT4205C deliver, and is 6W sufficient for a typical microcontroller plus peripherals?
The PT4205C delivers a regulated 3.3V output at up to 1.8A, providing 6W of isolated power, which is ample for a microcontroller, FPGA, or DSP with several SPI/I2C peripherals drawing under 1.5A total at 3.3V.
What input voltage range does the PT4205C support, and does it accommodate an unregulated 24V bus that may swing during load transients?
The PT4205C accepts input voltages from 18V to 36V, covering the full ±50% variation seen on typical unregulated 24V industrial bus rails during load transients, inrush events, and generator switching, without requiring an upstream regulator.
Does the PT4205C provide galvanic isolation, and what safety or EMI benefit does that offer in a PLC design?
Yes, the PT4205C provides galvanic isolation between the 24V input bus and the 3.3V output, breaking ground loops, preventing noise coupling from high-voltage actuators into the logic circuitry, and meeting IEC 61010 creepage requirements for industrial control equipment.
How does the 18-pin SIP package of the PT4205C simplify integration compared to a discrete isolated converter design?
The 18-pin SIP module houses the transformer, controller, and filter components internally, reducing the external component count to just a few bypass capacitors and eliminating the transformer winding and safety-creepage PCB layout work required for a discrete isolated converter design.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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