

Overview
The LM5019MR is a DC DC Converter made by Texas Instruments in a ESOP-8 package with 9 pins. -40℃~+125℃@(TJ) 1 1.225V~90V 100mA 1MHz 7.5V~100V Adjustable Buck Buck Built-in Yes ESOP-8 DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LM34927MRX_NOPB, from EasyEDA) and its footprint (EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP-2, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C1355499). 3 open-source boards in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
15- Features
- Overcurrent Protection, Adjustable soft-start, Built-in LDO regulator
- Frequency - Switching
- 1MHz
- Function
- Step-down type
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+125℃@(TJ)
- Output Current
- 100mA
- Output Type
- Adjustable
- Output Voltage
- 1.225V~90V
- Quiescent Current
- 1.75mA
- Switch tube (built-in/external)
- Built-in
- Switching Frequency
- 1MHz
- Synchronous Rectification
- Yes
- Synchronous Rectifier
- Yes
- Topology
- Buck
- Voltage - Supply
- 7.5V~100V
Order codes
1- LM5019MR/NOPBLCSC C1355499
Pinout
9| Pin | Name | Type |
|---|---|---|
| 1 | RTN | Unspecified |
| 2 | VIN | Unspecified |
| 3 | UVLO | Unspecified |
| 4 | RON | Unspecified |
| 5 | FB | Unspecified |
| 6 | VCC | Unspecified |
| 7 | BST | Unspecified |
| 8 | SW | Unspecified |
| 9 | EP | Unspecified |
Open-source boards using it
All 3- 2 layers45 × 45 mm

- 2 layers45 × 45 mm

- 2 layers45 × 45 mm

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Is there a KiCad symbol and footprint for the LM5019MR?
Yes. The symbol is EasyEDA_Cloud:LM34927MRX_NOPB and the footprint EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP-2, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LM5019MR?
ESOP-8, with 9 pins. Its footprint is drawn on this page.
Where is the LM5019MR datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM5019MR?
JLCPCB lists it as part C1355499, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM5019MR?
Parts like it in the library: the OC5800L by OCX, the TPS54628DDA by Texas Instruments, the LM22671MR-ADJ/NOPB by Texas Instruments and the LMR23630AQDDAQ1 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM5019MR?
3 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
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