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LM2575-3.3BU on a board, in 3D

LM2575-3.3BU

Microchip Technology

-40℃~+125℃@(TJ) 1 1A 3.3V 4V~40V 52kHz 5mA Buck Built-in Fixed No Overcurrent Protection、Cycle-by-cycle current limiting Step-down type TO-263-5 DC-DC Converters

Extended
DatasheetJLCPCBLCSCmicrochip/LM2575-3.3BU
Category
DC DC Converters
Package
TO-263-5
Pins
6

Overview

The LM2575-3.3BU is a DC DC Converter made by Microchip Technology in a TO-263-5 package with 5 pins. -40℃~+125℃@(TJ) 1 1A 3.3V 4V~40V 52kHz 5mA Buck Built-in Fixed No Overcurrent Protection、Cycle-by-cycle current limiting Step-down type TO-263-5 DC-DC Converters.

PCBKit's library has its KiCad symbol (Regulator_Switching:LM2575-3.3BU, from KiCad's library) and its footprint (Package_TO_SOT_SMD:TO-263-5_TabPin3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3193998). 8 open-source boards in 6 repositories on GitHub use it.

Symbol

VIN1OUT2GND3FB4ON/OFF5
Regulator_Switching:LM2575-3.3BUFrom KiCad's library

Footprint

123345
Package_TO_SOT_SMD:TO-263-5_TabPin3From KiCad's library

Order codes

1

Pinout

5
The pins of the LM2575-3.3BU
PinNameType
1VINPower in
2OUTOutput
3GNDPower in
4FBInput
5ON/OFFInput

Open-source boards using it

All 8
  • 4 layers162.6 × 48.3 mmPcb esp32 wled pwm multichannel, the printed circuit board in 3D

    Pcb esp32 wled pwm multichannel

    btittelbach/esp32_12chan_lowside_pwm_pcb

    Open Hardware PCB designed to drive 12 low-side PWM channels.

    100 parts3
  • 2 layers130 × 100 mmJacuzzi, the printed circuit board in 3D

    Jacuzzi

    jbbjarnason/hot-tub

    92 parts
  • 4 layers99.8 × 115 mmIgnitionController, the printed circuit board in 3D

    IgnitionController

    MiroslavMitrovic/IgnitionController_STM32

    Ignition controller implementation for 4T Single Cylinder/V-Twin motorcycle.

    226 partsGPL-3.0
  • 2 layers72.6 × 46.7 mmPowerRDP, the printed circuit board in 3D

    PowerRDP

    pbbp0904/HELEN

    The rendering above is a rough idea of what this payload will look like with some of its components installed.

    60 partsMIT
  • 4 layers23.5 × 51 mmWalter remix, the printed circuit board in 3D

    Walter remix

    vichalder/PCB-design

    13 parts

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Questions

Is there a KiCad symbol and footprint for the LM2575-3.3BU?

Yes. The symbol is Regulator_Switching:LM2575-3.3BU and the footprint Package_TO_SOT_SMD:TO-263-5_TabPin3, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM2575-3.3BU?

TO-263-5, with 5 pins. Its footprint is drawn on this page.

Where is the LM2575-3.3BU datasheet?

Microchip Technology publishes it: the Datasheet link on this page opens it.

Where can I order the LM2575-3.3BU?

JLCPCB lists it as part C3193998, with 0 in stock; the sellers' links on this page open their listings.

What can replace the LM2575-3.3BU?

Parts like it in the library: the LM2596S-5.0 by UMW, the LM2596S-ADJ by UMW, the XL4015E1 by XLSEMI and the LM2596S-5.0/TR by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LM2575-3.3BU?

8 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8