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LM5145RGY, in 3D

LM5145RGY

Texas Instruments

-40℃~+125℃@(TJ) 1 1MHz 6V~75V 800mV~60V Adjustable Buck Buck External Yes VQFN-20-EP(3.5x4.5) DC-DC Converters ROHS

Extended
DatasheetJLCPCBLCSCti/LM5145RGY
Category
DC DC Converters
Package
VQFN-20-EP(3.5x4.5)
Pins
21

Overview

The LM5145RGY is a DC DC Converter made by Texas Instruments in a VQFN-20-EP(3.5x4.5) package with 21 pins. -40℃~+125℃@(TJ) 1 1MHz 6V~75V 800mV~60V Adjustable Buck Buck External Yes VQFN-20-EP(3.5x4.5) DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:L3751PUR, from EasyEDA) and its footprint (EasyEDA_Cloud:VQFN-20_L4.5-W3.5-P0.50-BL-EP, from EasyEDA), ready for a KiCad board. 5 are in stock at JLCPCB (part C2650259). 2 open-source boards in 2 repositories on GitHub use it.

Symbol

EN/UVLO1RT2SS/TRK3COMP4FB5AGND6SYNCOUT7SYNCIN8NC9PGOOD10ILIM11PGND12LO13VCC14EP15NC16BST17HO18SW19VIN20EP21
EasyEDA_Cloud:L3751PURFrom EasyEDA

Footprint

21
EasyEDA_Cloud:VQFN-20_L4.5-W3.5-P0.50-BL-EPFrom EasyEDA

Parameters

12
Features
Overcurrent Protection
Frequency - Switching
1MHz
Function
Step-down type
Number of Outputs
1
Operating Temperature
-40℃~+125℃@(TJ)
Output Type
Adjustable
Output Voltage
800mV~60V
Quiescent Current
1.8mA
Switch tube (built-in/external)
External
Synchronous Rectifier
Yes
Topology
Buck
Voltage - Supply
6V~75V

Order codes

2

Pinout

21
The pins of the LM5145RGY
PinNameType
1EN/UVLOUnspecified
2RTUnspecified
3SS/TRKUnspecified
4COMPUnspecified
5FBUnspecified
6AGNDUnspecified
7SYNCOUTUnspecified
8SYNCINUnspecified
9NCUnspecified
10PGOODUnspecified
11ILIMUnspecified
12PGNDUnspecified
13LOUnspecified
14VCCUnspecified
15EPUnspecified
16NCUnspecified
17BSTUnspecified
18HOUnspecified
19SWUnspecified
20VINUnspecified
21EPUnspecified

Open-source boards using it

All 2
  • 2 layers45 × 22 mmDrone LM5145, the printed circuit board in 3D

    Drone LM5145

    hkustenterprize/RM2025-LM5145-48to24

    53 parts3
  • 4 layers100 × 60 mmUsb power 3s, the printed circuit board in 3D

    Usb power 3s

    misko/prompt2device

    The separate vNext PCB skill and orchestrator package is available alongside the reference workflow below; existing projects keep their accepted toolchain until an explicit migration.

    100 parts3MIT

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Questions

Is there a KiCad symbol and footprint for the LM5145RGY?

Yes. The symbol is EasyEDA_Cloud:L3751PUR and the footprint EasyEDA_Cloud:VQFN-20_L4.5-W3.5-P0.50-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM5145RGY?

VQFN-20-EP(3.5x4.5), with 21 pins. Its footprint is drawn on this page.

Where is the LM5145RGY datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM5145RGY?

JLCPCB lists it as part C2650259, with 5 in stock; the sellers' links on this page open their listings.

What can replace the LM5145RGY?

Parts like it in the library: the LM5146QRGYTQ1 by Texas Instruments, the LM5146RGY by Texas Instruments and the LM5145QRGYRQ1 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM5145RGY?

2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

3