# LM5146QRGYRQ1 (Component)
## Description
DC-DC Controllers
LM5146QRGYRQ1
VQFN-20_L4.5-W3.5-P0.50-BL-EP-1
LCSC Part Number: C1850329
JLCPCB Part Class: Extended Part
Manufactured by TI(德州仪器) Texas Instruments LM5146-Q1 100V synchronous buck DC/DC controller for automotive applications, AEC-Q100 Grade 1 qualified, 5.5V to 100V wide input voltage range, adjustable output voltage from 0.8V to 60V, 150°C maximum junction temperature, 100% duty cycle operation during input voltage dips, 40ns minimum high-side on-time, 140ns minimum off-time, switching frequency from 100kHz to 1MHz with synchronization capability, 7.5V gate drivers for standard VTH MOSFETs, 2.3A source and 3.5A sink gate drive capability, lossless RDS(on) or shunt current sensing, adjustable soft-start, hiccup overcurrent protection, UVLO, PGOOD indicator, thermal shutdown, 20-pin VQFN package.
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## Component Details
- **Owner:** lcsc
- **Created:** 11/2/2024
- **Last Updated:** 6/4/2026
- **Visibility:** Public
- **JLCPCB Part Class:** Extended Part
- **Part Type:** DC-DC Controllers
- **Manufacturer Name:** TI(德州仪器)
- **Manufacturer Part Number:** LM5146QRGYRQ1
- **LCSC Part Number:** C1850329
- **Package or Case Code:** VQFN-20_L4.5-W3.5-P0.50-BL-EP-1
- **Datasheet URL:** https://www.ti.com/lit/ds/symlink/lm5146-q1.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780585094516&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Flm5146-q1
- **Symbol Style:** parametric-v1
- **Used in:** 58 projects
## 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/lm5146qrgyrq1/texas-instruments.html?utm_currency=USD®ion=nac) | N/A | N/A |
| [LCSC](https://www.lcsc.com/product-detail/C1850329.html) | $3.1586 | 2.3K |
| [Mouser](https://www.mouser.com/en/ProductDetail/Texas-Instruments/LM5146QRGYRQ1?qs=PqoDHHvF64%252Bqr7KHxro84Q%3D%3D) | $5.54 | 5.4K |
- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** Texas Instruments
- **MPN:** LM5146QRGYRQ1
- **Mount Type:** Standard
- **Package / Case Code:** 20-VQFN
- **Pin Count:** 21
- **Compliance:** AEC-Q100
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | EN/UVLO | |
| 2 | RT | |
| 3 | SS/TRK | |
| 4 | COMP | |
| 5 | FB | |
| 6 | AGND | |
| 7 | SYNCOUT | |
| 8 | SYNCIN | |
| 9 | NC | |
| 10 | PGOOD | |
| 11 | ILIM | |
| 12 | PGND | |
| 13 | LO | |
| 14 | VCC | |
| 15 | EP | |
| 16 | NC | |
| 17 | BST | |
| 18 | HO | |
| 19 | SW | |
| 20 | VIN | |
| 21 | GND | |
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