# K7805-3AR3 (Component)
## Description
DC-DC switching regulator designed as a drop-in replacement for 7805 linear regulators, providing a regulated 5 V output at up to 3 A from a 7 V to 36 V DC input. It operates with high efficiency, requires no heatsink under normal conditions, and is supplied in a 3-pin SIP-compatible package for through-hole mounting.
#DCDCRegulator #SwitchingRegulator #VoltageRegulator #BuckConverter #5VOutput #3A #7Vto36VInput #SIP3 #MORNSUN #PowerManagement
## Component Details
- **Owner:** lcsc
- **Created:** 11/1/2024
- **Last Updated:** 8/3/2026
- **Visibility:** Public
- **Manufacturer Name:** MORNSUN(้ๅ้ณ)
- **Manufacturer Part Number:** K7805-3AR3
- **Part Type:** Power Modules
- **Datasheet URL:** https://www.mornsun-power.com/html/pdf/K7805-3AR3.html
- **Symbol Style:** parametric-v1
- **LCSC Part Number:** C2684867
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Package or Case Code:** PWRM-TH_K7805-3AR3
- **Used in:** 1 project
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Digi-Key](https://www.digikey.com/en/products/detail/mornsun-america-llc/K7805-3AR3/13168239) | N/A | N/A |
- **Part Type:** Thyristors
- **Manufacturer:** Mornsun
- **MPN:** K7805-3AR3
- **Mount Type:** Through Hole
- **Package / Case Code:** TO
- **Pin Count:** 12
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | Ctrl | |
| 2 | vin | |
| 3 | vin | |
| 4 | vin | |
| 5 | GND | |
| 6 | GND | |
| 7 | GND | |
| 8 | GND | |
| 9 | +VO | |
| 10 | +VO | |
| 11 | +VO | |
| 12 | Trim | |
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*Generated from [https://www.flux.ai/lcsc/k7805-3ar3~bapl](https://www.flux.ai/lcsc/k7805-3ar3~bapl)*