
V2.2 Mechanical Seven Segment Controller
OverInvented/Flippy
The code needed to build a mechanical 7-segment display that uses electromagnets to display characters

STMicroelectronics
0℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 3.3V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal Shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS
The LD1117V33 is a voltage Regulators Linear, Low Drop Out (LDO) Regulator made by STMicroelectronics in a TO-220 package with 3 pins. 0℃~+125℃@(Tj) 1 1.2V@(800mA) 100uV 15V 3.3V 5mA 75dB@(120Hz) 800mA Fixed Over Current Protection、Thermal Shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHS.
PCBKit's library has its KiCad symbol (Regulator_Linear:LD1117V33, from KiCad's library) and its footprint (Package_TO_SOT_THT:TO-220-3_Vertical, from KiCad's library), ready for a KiCad board. 5,497 are in stock at JLCPCB (part C283467). 67 open-source boards in 59 repositories on GitHub use it.
| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| DC input voltage VIN | Absolute maximum rating of VIN = 18 V, when IOUT is lower than 20 mA. | max 15 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 | TO-220 | typ 5 °C/W | 7 |
| Thermal resistance junction-ambient RthJA | TO-220 | typ 50 °C/W | 7 |
| Output voltage VO | Vin = 5.3 V, IO = 10 mA, TJ = 25 °C; CO = 10 uF | min 3.267 · typ 3.3 · max 3.333 V | 12 |
| Output voltage VO | IO = 0 to 800 mA, Vin = 4.75 to 10 V; TJ = 0 to 125 °C, CO = 10 uF | min 3.235 · max 3.365 V | 12 |
| Line regulation ΔVO | Vin = 4.75 to 15 V, IO = 0 mA; TJ = 0 to 125 °C, CO = 10 uF | typ 1 · max 6 mV | 12 |
| Load regulation ΔVO | Vin = 4.75 V, IO = 0 to 800 mA; TJ = 0 to 125 °C, CO = 10 uF | typ 1 · max 10 mV | 12 |
| Temperature stability ΔVO | TJ = 0 to 125 °C, CO = 10 uF | typ 0.5 % | 12 |
| Long term stability ΔVO | 1000 hrs, TJ = 125 °C; CO = 10 uF | typ 0.3 % | 12 |
| Operating input voltage Vin | IO = 100 mA; TJ = 0 to 125 °C, CO = 10 uF | max 15 V | 12 |
| Quiescent current Id | Vin ≤ 15 V; TJ = 0 to 125 °C, CO = 10 uF | typ 5 · max 10 mA | 12 |
| Output current IO | Vin = 8.3 V, TJ = 25 °C; CO = 10 uF | min 800 · typ 950 · max 1300 mA | 12 |
| Output noise voltage eN | B = 10 Hz to 10 kHz, TJ = 25 °C; CO = 10 uF | typ 100 uV | 12 |
| Supply voltage rejection SVR | IO = 40 mA, f = 120 Hz, TJ = 25 °C; Vin = 6.3 V, Vripple = 1 VPP; CO = 10 uF | min 60 · typ 75 dB | 12 |
| Dropout voltage Vd | IO = 100 mA; TJ = 0 to 125 °C, CO = 10 uF | typ 1 · max 1.1 V | 12 |
| Dropout voltage Vd | IO = 500 mA; TJ = 0 to 125 °C, CO = 10 uF | typ 1.05 · max 1.15 V | 12 |
| Dropout voltage Vd | IO = 800 mA; TJ = 0 to 125 °C, CO = 10 uF | typ 1.1 · max 1.2 V | 12 |
| Thermal regulation | Ta = 25 °C, 30 ms Pulse; CO = 10 uF | typ 0.01 · max 0.1 %/W | 12 |
| Pin | Name | Type |
|---|---|---|
| 1 | GND | Power in |
| 2 | VO | Power out |
| 3 | VI | Power in |

OverInvented/Flippy
The code needed to build a mechanical 7-segment display that uses electromagnets to display characters


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<iframe src="https://pcbkit.io/embed/parts/st/LD1117V33" title="LD1117V33 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/LD1117V33.jpg" alt="LD1117V33" width="1200" height="900">[](https://pcbkit.io/parts/st/LD1117V33)Yes. The symbol is Regulator_Linear:LD1117V33 and the footprint Package_TO_SOT_THT:TO-220-3_Vertical, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-220, with 3 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C283467, with 5,497 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the LD1117V33C by STMicroelectronics, the AMS1117T-3.3G by HANSCHIP semiconductor, the LM1086IT-3.3G by HANSCHIP semiconductor and the LM1084T-3.3 by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
67 boards in 59 repositories on GitHub; the most starred are listed on this page, with their KiCad files.