DC/DC Step-down Modules
Non-isolated switching regulators, 0.5 A to 2 A
The K78 family is a non-isolated switching regulator in the footprint of a 78xx linear regulator. Swapping a 7805 for a K7805 typically takes the dissipation from several watts to a fraction of a watt, with no board change and no heatsink.
Product series
- K12MT-12A 2
- K12MT-20AG-P 2
- K12MT-6A 2
- K12T-10A 2
- K12T-16A 2
- K12T-20A 2
- K12T-20A-P(N)-ST 2
- K12T-6A 2
- K78(L)04-1000R3 2
- K78(L)xx-3AR3 12
- K78Lxx-1000R3 4
- K78Lxx-500R3 4
- K78Uxx-1000R3(L) 14
- K78Uxx-500R3(L) 14
- K78Uxx-500R3G 7
- K78_JT-500R3 3
- K78_JT-500R3-LB 4
- K78_MT-1000R4 6
- K78_MT-500R4 6
- K78_T-1000R3 7
- K78_T-500R3 6
- K78xx-1000R3(L) 12
- K78xx-2000R3 12
- K78xx-500R3 5
- K78xx-500R3-LB 6
- K78xxM-1000R3 6
- K78xxW-500R3 2
- KAE24_T-0.5A 2
- KAP05xxT-1A 3
- KAP24xxT-1A 3
- KAP24xxT-3A 3
- KJB48xxEB(F)-10A 10
- KJB48xxEB(F)-20A 10
- KJB48xxSBO-10A 5
- KUB4824CCS-_A 2
- KUB48_QB-10A 2
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Reading the K78 part number
K7805-1000R3 reads as: K78 family, 05 = 5 V output, 1000 = 1000 mA output current, R3 = the package and revision. So K7803-1000R3 is the 3.3 V version of the same 1 A module, and K7805-2000R3 is the 2 A version of the 5 V one. Check the minimum input voltage: it rises with the output voltage.
Can’t find your part number?
This page lists the DC/DC Step-down parts we have published so far. The range we can quote from is considerably wider.