PT4851A The PT4851A is a triple output isolated DC-DC converter from Texas Instruments, delivering 3.3V, 2.5V, and 1.5V at up to 15A/10A/10A. It operates from a 36V to 75V input and is housed in a 26-SIP through-hole package.
Mfr Part #:

PT4851A

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The PT4851A is a triple output isolated DC-DC converter from Texas Instruments, delivering 3.3V, 2.5V, and 1.5V at up to 15A/10A/10A. It operates from a 36V to 75V input and is housed in a 26-SIP through-hole package.
Total Stock: 6 pcs
$ Price Range: $108.38

PT4851A Available from 1 distributor

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6 pcs
6 pcs On Request 1 On Request On Request 2004 On Request On Request

PT4851A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Efficiency
Features
Input Voltage (Minimum/Maximum)
Isolation Voltage
Mounting Type
Number of Outputs
Operating Temperature
Output Voltage - Nominal
Power (Watts)
Tape & Reel
Type
Voltage

PT4851A Description

Short technical summary and product information.

The PT4851A from Texas Instruments is a triple-output isolated DC-DC converter module designed for mixed-logic applications. It provides three independently regulated outputs: 3.3V at 15A, 2.5V at 10A, and 1.5V at 10A, delivering a combined power of 49W. The converter operates from a standard telecom input voltage range of 36V to 75V and offers 1500VDC isolation.

 

Key protection features include over-current, over-voltage, over-temperature shutdown, and under-voltage lockout (UVLO). The module exhibits a typical efficiency of 85% and can operate over a wide temperature range of -40°C to 85°C.

 

The PT4851A is housed in a 26-SIP module with through-hole, right-angle mounting, requiring no external heatsink. It belongs to the Excalibur PT4850 series and is suitable for powering DSPs, ASICs, and I/O logic in telecom and industrial equipment.

PT4851A Quick Information

Product Type: Isolated DC-DC Converter
Series: Excalibur
Canonical Name: Texas Instruments PT4851A Triple Output Isolated DC-DC Converter
Subcategory: Isolated DC-DC Converter

PT4851A Compliance

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

PT4851A Estimated Pricing

Qty Low High
3+ $108.38 $108.38

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

PT4851A Features

  • Triple independent regulated outputs (3.3V/2.5V/1.5V).
  • Wide input voltage range 36V to 75V.
  • 1500VDC isolation for safety.
  • High efficiency up to 85% typical.
  • Through-hole 26-SIP right-angle package.

PT4851A Applications

  • Powers mixed logic DSP and ASIC cores.
  • Ideal for telecom central office supplies.
  • Used in industrial control systems.

PT4851A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the PT4851A?

36V to 75V.

What is the package type and mounting?

26-SIP Module with through-hole, right-angle mounting.

What is the operating temperature range?

-40°C to 85°C.

Is the PT4851A RoHS compliant?

Yes, it is listed as RoHS3 Compliant (unverified).

What protections does the PT4851A include?

Over-current, over-voltage, over-temperature shutdown, and under-voltage lockout.

What is the output current capacity?

Output 1: 15A, Output 2: 10A, Output 3: 10A.

What is the isolation voltage?

1500VDC.

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