Skip to the content
1234

LD1117S50

STMicroelectronicsExtended

0℃~+125℃@(Tj) 1 1.1V@(800mA) 100uVrms 15V 5V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-223-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS

DatasheetJLCPCBLCSC
Part id
st/LD1117S50
Category
Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
Package
SOT-223-3
Pins
4
In stock
21,776 at JLCPCB (C134077)
Used on
3 open-source boards

Overview

The LD1117S50 is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a SOT-223-3 package with 4 pins. 0℃~+125℃@(Tj) 1 1.1V@(800mA) 100uVrms 15V 5V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-223-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.

PCBKit's library has its KiCad symbol (Pinmap_Generic:Regulator_Linear_1GND_2OUT_3IN_4OUT, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR, from EasyEDA), ready for a KiCad board. 21,776 are in stock at JLCPCB (part C134077). 3 open-source boards in 3 repositories on GitHub use it.

Symbol

IN3OUT2GND1
Pinmap_Generic:Regulator_Linear_1GND_2OUT_3IN_4OUTFrom PCBKit's generic symbols

Footprint

1234
EasyEDA_Cloud:SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BRFrom EasyEDA

From the datasheet

13
Supply, least
6.5 V · Vin, min operating input for specified output regulation · p. 13
Supply, most
15 V · Vin, max operating input at IO = 100 mA · p. 13
Supply, absolute maximum
15 V · VIN, absolute max DC input · p. 7
Supply, absolute maximum
18 V · VIN, absolute max when IOUT is lower than 20 mA · p. 7
Junction, hottest
125 °C · max operating junction temperature, standard version · p. 7
Takes working
5 mA · typical quiescent current, Vin ≤ 15 V · p. 13
Gives
800 mA · max rated continuous output current · p. 1
Output
5 V · typical fixed output, Vin = 7 V, IO = 10 mA, TJ = 25 °C · p. 13
Dropout
1 V · typical dropout at IO = 100 mA · p. 13
Dropout
1.05 V · typical dropout at IO = 500 mA · p. 13
Dropout
1.1 V · typical dropout at IO = 800 mA · p. 13
Junction to case (SOT-223)
15 K/W · junction-case thermal resistance · p. 7
Junction to air (SOT-223)
110 K/W · junction-ambient thermal resistance · p. 7

What it is and has

3
Protection
Internal current and thermal limit · p. 1
Output current
800 mA · p. 1
Supply voltage rejection
75 dB typical · p. 1

Around it

1
cap 10 µF
between OUT and GND; Output capacitor; minimum capacitance needed for stability. · p. 1

Specifications

22
ParameterConditionsAs printedPage
DC input voltage VINSee exception for IOUT lower than 20 mAmax 15 V7
DC input voltage VINIOUT lower than 20 mAmax 18 V7
Power dissipation PTOTmax 12 W7
Storage temperature range TSTGmin -40 · max 150 °C7
Operating junction temperature range TOPstandard versionmin 0 · max 125 °C7
Thermal resistance junction-case RthJCSOT-223typ 15 °C/W7
Thermal resistance junction-ambient RthJASOT-223typ 110 °C/W7
Output voltage VOLD1117S50; Vin = 7 V, IO = 10 mA, TJ = 25 °C; CO = 10 uFmin 4.95 · typ 5 · max 5.05 V13
Output voltage VOLD1117S50; IO = 0 to 800 mA, Vin = 6.5 to 15 V; TJ = 0 to 125 °C, CO = 10 uFmin 4.9 · max 5.1 V13
Line regulation ΔVOLD1117S50; Vin = 6.5 to 15 V, IO = 0 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 10 mV13
Load regulation ΔVOLD1117S50; Vin = 6.5 V, IO = 0 to 800 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 15 mV13
Temperature stability ΔVOLD1117S50; TJ = 0 to 125 °C, CO = 10 uFtyp 0.5 %13
Long term stability ΔVOLD1117S50; 1000 hrs, TJ = 125 °C; CO = 10 uFtyp 0.3 %13
Operating input voltage VinLD1117S50; IO = 100 mA; TJ = 0 to 125 °C, CO = 10 uFmax 15 V13
Quiescent current IdLD1117S50; Vin ≤ 15 V; TJ = 0 to 125 °C, CO = 10 uFtyp 5 · max 10 mA13
Output current IOLD1117S50; Vin = 10 V, TJ = 25 °C; CO = 10 uFmin 800 · typ 950 · max 1300 mA13
Output noise voltage eNLD1117S50; B = 10 Hz to 10 kHz, TJ = 25 °C; CO = 10 uFtyp 100 uV13
Supply voltage rejection SVRLD1117S50; IO = 40 mA, f = 120 Hz, TJ = 25 °C; Vin = 8 V, Vripple = 1 VPP; CO = 10 uFmin 60 · typ 75 dB13
Dropout voltage VdLD1117S50; IO = 100 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1 · max 1.1 V13
Dropout voltage VdLD1117S50; IO = 500 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1.05 · max 1.15 V13
Dropout voltage VdLD1117S50; IO = 800 mA; TJ = 0 to 125 °C, CO = 10 uFtyp 1.1 · max 1.2 V13
Thermal regulationLD1117S50; Ta = 25 °C, 30 ms Pulse; CO = 10 uFtyp 0.01 · max 0.1 %/W13

Ordering codes, by the datasheet

36
LD1117S12TR
SOT-223 · 1.2 V output · p. 42
LD1117DT12TR
DPAK · 1.2 V output; tape and reel · p. 42
LD1117S12CTR
SOT-223 · 1.2 V output; C version · p. 42
LD1117DT12CTR
DPAK · 1.2 V output; C version; tape and reel · p. 42
LD1117S18TR
SOT-223 · 1.8 V output · p. 42
LD1117DT18TR
DPAK · 1.8 V output; tape and reel · p. 42
LD1117V18
TO-220 · 1.8 V output · p. 42
LD1117S18CTR
SOT-223 · 1.8 V output; C version · p. 42
LD1117DT18CTR
DPAK · 1.8 V output; C version; tape and reel · p. 42
LD1117S25TR
SOT-223 · 2.5 V output · p. 42
LD1117DT25TR
DPAK · 2.5 V output; tape and reel · p. 42
LD1117S25CTR
SOT-223 · 2.5 V output; C version · p. 42
LD1117DT25CTR
DPAK · 2.5 V output; C version; tape and reel · p. 42
LD1117S33TR
SOT-223 · 3.3 V output · p. 42
LD1117D33TR
SO-8 · 3.3 V output · p. 42
LD1117DT33TR
DPAK · 3.3 V output; tape and reel · p. 42
LD1117V33
TO-220 · 3.3 V output · p. 42
LD1117V33-DG
TO-220 (Dual Gauge) · 3.3 V output · p. 42
LD1117V33C-DG
TO-220 (Dual Gauge) · 3.3 V output; C version · p. 42
LD1117S33CTR
SOT-223 · 3.3 V output; C version · p. 42
LD1117D33CTR
SO-8 · 3.3 V output; C version · p. 42
LD1117DT33CTR
DPAK · 3.3 V output; C version; tape and reel · p. 42
LD1117V33C
TO-220 · 3.3 V output; C version · p. 42
LD1117S50TR
SOT-223 · 5 V output · p. 42
LD1117DT50TR
DPAK · 5 V output; tape and reel · p. 42
LD1117V50
TO-220 · 5 V output · p. 42
LD1117V50-DG
TO-220 (Dual Gauge) · 5 V output · p. 42
LD1117S50CTR
SOT-223 · 5 V output; C version · p. 42
LD1117DT50CTR
DPAK · 5 V output; C version; tape and reel · p. 42
LD1117V50C
TO-220 · 5 V output; C version · p. 42
LD1117STR
SOT-223 · Adjustable output, 1.25 to 15 V · p. 42
LD1117DTTR
DPAK · Adjustable output, 1.25 to 15 V; tape and reel · p. 42
LD1117V
TO-220 · Adjustable output, 1.25 to 15 V · p. 42
LD1117V-DG
TO-220 (Dual Gauge) · Adjustable output, 1.25 to 15 V · p. 42
LD1117SC-R
SOT-223 · Adjustable output, 1.25 to 15 V; C version · p. 42
LD1117DTC-R
DPAK · Adjustable output, 1.25 to 15 V; C version; tape and reel · p. 42

Open-source boards using it

3
  • 4 layers60 × 77 mmDrv board, the printed circuit board in 3D

    Drv board

    klebol/Klebot_PCB

    Main PCB for klebot project.

    118 parts
  • 12 layers68 × 40 mmTeresina Rack, the printed circuit board in 3D

    Teresina Rack

    marcoallegretti/Teresina-Rack

    The goal is an open, self-fabricatable Daisy Patch SM-compatible Eurorack submodule: the same carrier interface and libDaisy application compatibility through a small Teresina firmware variant.

    214 parts

Parts like it

8

Questions

Is there a KiCad symbol and footprint for the LD1117S50?

Yes. The symbol is Pinmap_Generic:Regulator_Linear_1GND_2OUT_3IN_4OUT and the footprint EasyEDA_Cloud:SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LD1117S50?

SOT-223-3, with 4 pins. Its footprint is drawn on this page.

Where is the LD1117S50 datasheet?

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

Where can I order the LD1117S50?

JLCPCB lists it as part C134077, with 21,776 in stock; the sellers' links on this page open their listings.

What can replace the LD1117S50?

Parts like it in the library: the LM1117IMPX-5.0/NOPB by Texas Instruments, the BL1117-50CX by BL, the LM1117GS-5.0 by HTC Korea TAEJIN Tech and the AH1117CLTR50 by BL. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the LD1117S50?

3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.