# LTC7891RUFDM#PBF (Component) ## Description Buck Regulator Positive Output Step-Down DC-DC Controller IC 28-QFN (4x5) #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Switching-controller #LTC7891 ## Component Details - **Owner:** adrian95 - **Created:** 3/23/2026 - **Last Updated:** 3/23/2026 - **Visibility:** Public - **Datasheet URL:** https://www.analog.com/media/en/technical-documentation/data-sheets/ltc7891.pdf - **Part Type:** Power Management - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturer Part Number:** LTC7891RUFDM_PBF - **Package or Case Code:** 28-QFN - **Manufacturer Name:** Analog Devices - **Used in:** 4 projects - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Analog Devices - **MPN:** LTC7891RUFDM_PBF - **Package / Case Code:** 28-QFN - **Pin Count:** 29 - **Logic Function:** Monitor ## Pins | Pin | Name | Type | |-----|------|------| | 1 | PLLIN/SPREAD | | | 2 | MODE | | | 3 | FREQ | | | 4 | TRACK/SS | | | 5 | TEST | | | 6 | VPRG | | | 7 | VIN | | | 8 | DRVCC | | | 9 | BSTVCC | | | 10 | EXTVCC | | | 11 | INTVCC | | | 12 | BGUP | | | 13 | BGDN | | | 14 | BOOST | | | 15 | SW | | | 16 | TGDN | | | 17 | TGUP | | | 18 | PGOOD | | | 19 | ILIM | | | 20 | ITH | | | 21 | VFB | | | 22 | SENSE+ | | | 23 | SENSE- | | | 24 | DTCB | | | 25 | DTCA | | | 26 | DRVSET | | | 27 | DRVUV | | | 28 | RUN | | | 29 | GND | | --- *Generated from [https://www.flux.ai/adrian95/ltc7891rufdmpbf~p2t](https://www.flux.ai/adrian95/ltc7891rufdmpbf~p2t)*