P78A-1000 Series

3 Pin SIP Non-Isolated Dc-Dc Converter

P78A-1000 Series
P78A-1000 Series Alternate View


  • 1 A
  • 3 ~ 5 Vdc output options
  • 28 Vdc max input voltage
  • -40 to +85°C temperature range
  • Pin compatible with LM78XX linear regulators
  • Wide input voltage range
  • Low ripple and noise
  • Efficiency up to 91%

Safety & Compliance



The compact P78A-1000 non-isolated dc-dc converter series has been designed to offer a high performance alternative to linear regulators. Utilizing switching technology, the series is footprint compatible with TO-220 package LM78XX model regulators. Unlike linear regulators, the P78 dc switching regulator does not require a heat sink, making it ideal for applications where board space is at a premium and energy efficiency is a concern.


  • Regulation
  • Package Type
  • Isolation (Vdc)
  • Dimensions LxWxH (in)
    0.457 x 0.335 x 0.41
  • Dimensions LxWxH (mm)
    11.6 x 8.5 x 10.4
  • Protections
    Over Current, Short Circuit


Model Number Input Voltage (Vdc) Power (W) Output Voltage (Vdc) Output Current (A) 3D Model PCB Footprint Stock Check Sample Request RFQ
P78A03-1000 7 ~ 28 3.3 3.3 1 3D Model PCB Footprint Stock Check P78A03-1000 Sample Request Request a Quote
P78A05-1000 8 ~ 28 5 5 1 3D Model PCB Footprint Stock Check P78A05-1000 Sample Request Request a Quote