4 layers65 × 56 mm
LD1117S12
STMicroelectronicsExtended
0.003%Vout 0℃~+125℃@(Tj) 1 1.2V 15V 1V@(100mA) 60uA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal shutdown Positive SOT-223-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
- Part id
- st/LD1117S12
- Category
- Voltage Regulators, Linear, Low Drop Out (LDO) Regulators
- Package
- SOT-223-3
- Pins
- 4
- In stock
- 9,962 at JLCPCB (C155612)
- Used on
- 7 open-source boards
Overview
The LD1117S12 is a voltage Regulators, Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a SOT-223-3 package with 4 pins. 0.003%Vout 0℃~+125℃@(Tj) 1 1.2V 15V 1V@(100mA) 60uA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal shutdown 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. 9,962 are in stock at JLCPCB (part C155612). 7 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
11- Supply, most
- 15 V · Vin, maximum operating input voltage · p. 9
- Supply, absolute maximum
- 15 V · VIN, absolute maximum · p. 7
- Supply, absolute maximum
- 18 V · VIN, absolute maximum when IOUT is lower than 20 mA · p. 7
- Junction, hottest
- 125 °C · Maximum operating junction temperature, standard version · p. 7
- Gives
- 800 mA · Rated continuous output current · p. 1
- Output
- 1.2 V · Typical fixed output, Vin = 3.2 V, IO = 10 mA, TJ = 25 °C · p. 9
- Dropout
- 1 V · Typical dropout at IO = 100 mA · p. 9
- Dropout
- 1.05 V · Typical dropout at IO = 500 mA · p. 9
- Dropout
- 1.1 V · Typical dropout at IO = 800 mA · p. 9
- 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
2- Protection
- Internal current and thermal limit · p. 1
- Output current
- 800 mA · p. 1
Around it
1- res 120 Ω
- between GND and OUT; Specified in the LD1117#12 test circuit conditions. · p. 9
Specifications
24| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| DC input voltage VIN | max 15 V | 7 | |
| DC input voltage VIN | IOUT is lower than 20 mA | max 18 V | 7 |
| Power dissipation PTOT | max 12 W | 7 | |
| Storage temperature range TSTG | min -40 · max 150 °C | 7 | |
| Operating junction temperature range TOP | for standard version | min 0 · max 125 °C | 7 |
| Thermal resistance junction-case RthJC | SOT-223 | typ 15 °C/W | 7 |
| Thermal resistance junction-ambient RthJA | SOT-223 | typ 110 °C/W | 7 |
| Output voltage VO | Vin = 3.2 V, IO = 10 mA, TJ = 25 °C | min 1.188 · typ 1.2 · max 1.212 V | 9 |
| Output voltage VO | IO = 10 to 800 mA; Vin - VO = 1.4 to 10 V | min 1.14 · typ 1.2 · max 1.26 V | 9 |
| Line regulation ΔVO | Vin - VO = 1.5 to 13.75 V, IO = 10 mA | typ 0.035 · max 0.2 % | 9 |
| Load regulation ΔVO | Vin - VO = 3 V, IO = 10 to 800 mA | typ 0.1 · max 0.4 % | 9 |
| Temperature stability ΔVO | typ 0.5 % | 9 | |
| Long term stability ΔVO | 1000 hrs, TJ = 125 °C | typ 0.3 % | 9 |
| Operating input voltage Vin | max 15 V | 9 | |
| Adjustment pin current Iadj | Vin ≤ 15 V | typ 60 · max 120 uA | 9 |
| Adjustment pin current change ΔIadj | Vin - VO = 1.4 to 10 V; IO = 10 to 800 mA | typ 1 · max 5 uA | 9 |
| Minimum load current IO(min) | Vin = 15 V | typ 2 · max 5 mA | 9 |
| Output current IO | Vin - VO = 5 V, TJ = 25 °C | min 800 · typ 950 · max 1300 mA | 9 |
| Output noise (%VO) eN | B = 10 Hz to 10 kHz, TJ = 25 °C | typ 0.003 % | 9 |
| Supply voltage rejection SVR | IO = 40 mA, f = 120 Hz, TJ = 25 °C; Vin - VO = 3 V, Vripple = 1 VPP | min 60 · typ 75 dB | 9 |
| Dropout voltage Vd | IO = 100 mA | typ 1 · max 1.1 V | 9 |
| Dropout voltage Vd | IO = 500 mA | typ 1.05 · max 1.15 V | 9 |
| Dropout voltage Vd | IO = 800 mA | typ 1.1 · max 1.2 V | 9 |
| Thermal regulation | Ta = 25 °C, 30 ms Pulse | typ 0.01 · max 0.1 %/W | 9 |
Ordering codes, by the datasheet
1- LD1117S12TR
- SOT-223 · 1.2 V output, standard version · p. 42
Open-source boards using it
7- 2 layers167 × 115 mm
- 2 layers319.5 × 146.3 mm
- 4 layers141 × 89.5 mm
- 2 layers128 × 83 mm
- 2 layers128 × 83 mm
- 2 layers167 × 115 mm
Parts like it
8
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Questions
Is there a KiCad symbol and footprint for the LD1117S12?
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 LD1117S12?
SOT-223-3, with 4 pins. Its footprint is drawn on this page.
Where is the LD1117S12 datasheet?
STMicroelectronics publishes it: the Datasheet link on this page opens it.
Where can I order the LD1117S12?
JLCPCB lists it as part C155612, with 9,962 in stock; the sellers' links on this page open their listings.
What can replace the LD1117S12?
Parts like it in the library: the AZ1117H-1.2TRE1 by Diodes Incorporated, the LM1117S-1.2 by HTC Korea TAEJIN Tech, the AP1122EG by Diodes Incorporated and the NCP566ST12 by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LD1117S12?
7 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.