# LTC4281CUFD#PBF (Component)
## Description
ADI
LTC4281CUFD#PBF
QFN-28_L5.0-W4.0-P0.50-BL-EP
LCSC Part Number: C687943
JLCPCB Part Class: Extended Part
Manufactured by Analog Devices
## Component Details
- **Owner:** lcsc
- **Created:** 11/2/2024
- **Last Updated:** 4/29/2025
- **Visibility:** Public
- **Manufacturer Part Number:** LTC4281CUFD#PBF
- **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010204_Analog-Devices-LTC4281CUFD-PBF_C687943.pdf
- **Part Type:** ADI
- **Manufacturer Name:** Analog Devices
- **Product Info Url:** https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_LTC4281CUFD-PBF_Analog-Devices-ADI-LINEAR-LTC4281CUFD-PBF_C687943.html
- **Package or Case Code:** QFN-28_L5.0-W4.0-P0.50-BL-EP
- **JLCPCB Part Class:** Extended Part
- **LCSC Part Number:** C687943
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/ltc4281cufdpbf/analog-devices.html?utm_currency=USD®ion=asia) | $15.3583 | 123 |
| [Digi-Key](https://www.digikey.com/en/products/detail/analog-devices-inc/LTC4281CUFD-PBF/5819089) | $15.81 | 2.2K |
| [LCSC](https://www.lcsc.com/product-detail/C687943.html) | $9.727 | 0 |
| [Mouser](https://www.mouser.com/ProductDetail/Analog-Devices/LTC4281CUFDPBF?qs=oahfZPh6IAL0ttbuFzNH7g%3D%3D) | $16.29 | 68 |
| [Verical](https://www.verical.com/pd/analog-devices-hot-swap-controller-LTC4281CUFD-PBF-5765912?utm_currency=USD) | $15.3583 | 123 |
- **Part Type:** Other
- **Manufacturer:** Analog Devices
- **MPN:** LTC4281CUFD#PBF
- **Mount Type:** PCB
- **Package / Case Code:** 28-QFN
- **Pin Count:** 29
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | ON | |
| 2 | OV | |
| 3 | GND | |
| 4 | WP | |
| 5 | INTVCC | |
| 6 | TIMER | |
| 7 | CLKOUT | |
| 8 | CLKIN | |
| 9 | ADR0 | |
| 10 | ADR1 | |
| 11 | ADR2 | |
| 12 | SDAI | |
| 13 | SDAO | |
| 14 | SCL | |
| 15 | ~{ALERT} | |
| 16 | GPIO3 | |
| 17 | GPIO2 | |
| 18 | GPIO1 | |
| 19 | GND | |
| 20 | FB | |
| 21 | SOURCE | |
| 22 | GATE | |
| 23 | ADC– | |
| 24 | SENSE– | |
| 25 | SENSE+ | |
| 26 | ADC+ | |
| 27 | VDD | |
| 28 | UV | |
| 29 | EP | |
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*Generated from [https://www.flux.ai/lcsc/ltc4281cufdpbf~cmcg](https://www.flux.ai/lcsc/ltc4281cufdpbf~cmcg)*