Product details


Iout (Max) (A) 6 Vin (Min) (V) 7 Vin (Max) (V) 36 Vout (Min) (V) 2.5 Vout (Max) (V) 12.6 Soft start Fixed Features Enable, Tracking Operating temperature range (C) -40 to 85 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 660 Switching frequency (Min) (kHz) 440 Switching frequency (Typ) (kHz) 550 Duty cycle (Max) (%) 100 Topology Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

Surface Mount Module (EUL) 7 901 mm² 38.99 x 23.11 Through-Hole Module (EUK) 7 901 mm² 38.99 x 23.11 open-in-new Find other Buck modules (integrated inductor)


  • 6-A Output Current
  • Wide-Input Voltage
    (7 V to 36 V) / (15 V to 36 V)
  • Wide-Output Voltage Adjust
    (2.5 V to 12.6 V) / (11.85 V to 22 V)
  • High Efficiency (Up to 96%)
  • On/Off Inhibit
  • Undervoltage Lockout
  • Output Current Limit
  • 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 PTN78020 is a series of high-efficiency, step-down integrated switching regulators (ISRs), that represent the third generation in the evolution of high-performance power modules designed for industrial use. The wide-input voltage range makes these modules suitable for a variety of applications that operate off 12-V, 24-V, and 28-V dc power. In new designs they should be considered in place of the PT6620, PT6650, PT6680, and PT6880 series of single in-line pin (SIP) products. The PTN78020 is smaller and lighter than its predecessors, and has either similar or improved electrical performance characteristics. The caseless, double-sided package has excellent thermal characteristics, and is compatible with TI's roadmap for RoHS and lead-free compliance.

Operating from a wide-input voltage range, the PTN78020 provides high-efficiency, step-down voltage conversion for loads of up to 6 A. The output voltage is set using a single, external resistor. The PTN78020W may be set to any value within the range, 2.5 V to 12.6 V, and the PTN78020H from 11.85 V to 22 V. The output voltage of the PTN78020W can be as little as 2 V lower than the input, allowing operation down to 7 V, with an output voltage of 5 V. The output voltage of the PTN78020H can be as little as 3 V lower than the input, allowing operation down to 15 V, with an output voltage of 12 V.

The PTN78020 has undervoltage lockout, an integral on/off inhibit, and includes an output current limit and overtemperature protection.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LMZM33606 ACTIVE 3.5-V to 36-V input, 1-V to 20-V output, 6-A power module The LMZM33606 is offered in a smaller over-molded QFN-style power module.

Technical documentation

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Type Title Date
* Datasheet 6-A Wide-Input Voltage Adjustable Switching Regulator datasheet (Rev. C) Aug. 18, 2011
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 (EUL) 7 View options
Through-Hole Module (EUK) 7 View options

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