6-W, 3.3/5-V Input, Wide Adjust Output Positive-to-Negative Converter


Product details


Iout (Max) (A) 1 Vin (Min) (V) 2.9 Vin (Max) (V) 7 Output voltage (Min) (V) -15 Output voltage (Max) (V) -3.3 Soft start Fixed Features 3.3V Bus, 5V Bus, Enable, Negative Output, VO Adjustable Operating temperature range (C) -40 to 85 Regulated outputs (#) 1 Topology Inverting Package type Open-Frame open-in-new Find other Buck-boost & inverting modules (integrated inductor)

Package | Pins | Size

Surface Mount Module (EUV) 5 314 mm² 23.12 x 13.59 Through-Hole Module (EUU) 5 314 mm² 23.12 x 13.59 open-in-new Find other Buck-boost & inverting modules (integrated inductor)


  • Up to 6-W Output Power
  • Wide-Input Voltage
    (2.9 V to 7 V)
  • Wide-Output Voltage Adjust (-15 V to -3.3 V)
  • High Efficiency (Up to 84%)
  • On/Off Inhibit
  • Output Current Limit
  • Undervoltage Lockout
  • Overtemperature Shutdown
  • Operating Temperature: -40°C to 85°C
  • Surface-Mount Package Available
    • General-Purpose, Industrial Controls, HVAC Systems, Test and Measurement, Medical Instrumentation, AC/DC Adaptors, Vehicles, Marine, and Avionics

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The PTN04050A is an adjustable output, positive-to-negative, integrated switching regulator. In new designs, it should be considered in place of the PT5020 series of positive-to-negative integrated switching regulator products. The PTN04050A is smaller and lighter than its predecessor, with improved electrical performance characteristics, while operating over a wider input voltage range, with an adjustable output voltage. The caseless, double-sided package also exhibits improved thermal characteristics, and is compatible with TI's roadmap for RoHS and lead-free compliance.

Operating from a wide-input voltage range of 2.9 V to 7 V, the PTN04050A provides high-efficient, positive-to-negative voltage conversion for loads of up to 6 W. The output voltage is set using a single external resistor, and may be set to any value within the range, -15 V to -3.3 V.

The PTN04050A features include on/off inhibit, undervoltage lockout, over-current protection, and is suited for a wide variety of general-purpose applications that operate off 3.3-V or 5-V input.

open-in-new Find other Buck-boost & inverting modules (integrated inductor)
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PTN04050C ACTIVE 12-W, 3.3/5-V Input, Wide Adjust Output Boost Converter The C-version is a drop-in alternative providing twice the the output power.

Technical documentation

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Type Title Date
* Data sheet 6-W 3.3/5-V Input Wide Adjust Output Positive-to-Negative Converter datasheet Sep. 29, 2005
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note High-Temperatures Soldering Requirements for Plug-in Power, Surface-Mount Pdts (Rev. A) Aug. 13, 2009
Application note Wide-input dc/dc modules offer maximum design flexibility Apr. 18, 2006
Application note New power modules improve surface-mount manufacturability Jul. 14, 2005

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Surface Mount Module (EUV) 5 View options
Through-Hole Module (EUU) 5 View options

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