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LD3985M18R, in 3D

LD3985M18R

STMicroelectronics

-40℃~+125℃@(Tj) 1 1.8V 100mV@(150mA) 150mA 150uA 30uVrms 60dB@(1kHz) 6V Enable、Short Circuit Protection、Thermal Shutdown Fixed Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

Extended
DatasheetJLCPCBLCSCst/LD3985M18R
Category
DC DC Converters
Package
SOT-23-5
Pins
5

Overview

The LD3985M18R is a DC DC Converter made by STMicroelectronics in a SOT-23-5 package with 5 pins. -40℃~+125℃@(Tj) 1 1.8V 100mV@(150mA) 150mA 150uA 30uVrms 60dB@(1kHz) 6V Enable、Short Circuit Protection、Thermal Shutdown Fixed Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (ld3985:LD3985, from Agg-kicad) and its footprint (Package_TO_SOT_SMD:SOT-23-5, from KiCad's library), ready for a KiCad board. 28 are in stock at JLCPCB (part C2970488). 2 open-source boards in 2 repositories on GitHub use it.

Symbol

VIN1EN3GND2VOUT5BYP4
ld3985:LD3985From Agg-kicad

Footprint

12345
Package_TO_SOT_SMD:SOT-23-5From KiCad's library

Parameters

12
Features
Enable control
Noise
30uVrms
Number of Outputs
1
Operating Temperature
-40℃~+125℃@(Tj)
Output Configuration
Positive
Output Current
150mA
Output Type
Fixed
Output Voltage
1.8V
Power Supply Rejection Ratio (PSRR)
60dB@(1kHz)
Voltage - Supply
6V
Voltage Dropout
100mV@(150mA)
standby current
150uA

Order codes

1

Pinout

5
The pins of the LD3985M18R
PinNameType
1VINPower in
2GNDPower in
3ENInput
4BYPPassive
5VOUTPower out

Open-source boards using it

All 2
  • 4 layers175.8 × 65.1 mmBachelor Main PCB, the printed circuit board in 3D

    Bachelor Main PCB

    fiskebolle30/Bachelor_Electronics_hardware

    All PCB design files for the bachelor project. Project is made in KiCad

    231 parts1
  • 2 layers99.1 × 95.3 mmTmb musicplayer, the printed circuit board in 3D

    Tmb musicplayer

    janfietz/tmb_board

    Hardware design for toddlerMusicBox project

    203 partsCC-BY-SA-4.0

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Questions

Is there a KiCad symbol and footprint for the LD3985M18R?

Yes. The symbol is ld3985:LD3985 and the footprint Package_TO_SOT_SMD:SOT-23-5, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LD3985M18R?

SOT-23-5, with 5 pins. Its footprint is drawn on this page.

Where is the LD3985M18R datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the LD3985M18R?

JLCPCB lists it as part C2970488, with 28 in stock; the sellers' links on this page open their listings.

What can replace the LD3985M18R?

Parts like it in the library: the LM3671MFX-1.8 by Texas Instruments, the TPS62202DBV by Texas Instruments, the XC9236A18CMR by Torex Semiconductor and the LM3671MF-1.8 by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LD3985M18R?

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

Parts like it

8