component
SCJT1117B-1.8
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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SCJT1117B-1.8
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
SCJT1117B-1.8 from Changjing, in a SOT-223. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADJ/GND | power_in | Ground reference for the fixed-voltage versions (including SCJT1117B-1.8) and the adjust terminal for the ADJ version, with adjust pin current specified at 55 to 120 µA in the electrical characteristics table. |
| 2 | OUTPUT | power_out | Regulated output; for the 1.8 V version the output is specified at 1.755 V to 1.845 V at 10 mA load, and 22 µF tantalum is recommended as the output capacitor in the application circuit. |
| 3 | IN | power_in | Unregulated input supply; the datasheet lists an input voltage limit of 20 V in its rating table and requires VIN to exceed VOUT by the dropout voltage (1.3 V typical at 1 A). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-223 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage (SCJT1117B-1.8) | VO | 1.764 | 1.8 | 1.836 | V | IOUT=10mA, VIN=3.8V | 3 |
| Output Voltage (SCJT1117B-1.8) | VO | 1.755 | 1.8 | 1.845 | V | 10mA≤IOUT≤1A, 3.3V≤VIN≤12V | 3 |
| Line Regulation (SCJT1117B-1.8) | LNR | 0.03 | 0.2 | % | 3 | ||
| Load Regulation (SCJT1117B-1.8) | LDR | 9 | 36 | mV | VIN-VOUT=1.5V, 10mA≤IOUT≤1A | 3 | |
| Minimum Load Current | IL | 2 | 10 | mA | 3 | ||
| Quiescent Current | Iq | 10 | mA | VIN= VOUT+1.25V (ADJ except) | 3 | ||
| Dropout Voltage | VD | 1.3 | V | ΔVREF=1%, IOUT=1.0A | 3 | ||
| Ripple Rejection | RR | 60 | dB | f=120Hz, COUT=22μF Tantalum, VIN-VOUT=3V, IOUT=1A | 3 | ||
| Input Voltage | Vi | 20 | V | 2 | |||
| Junction Temperature | Tj | -25 | 125 | ℃ | 2 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 2 | ||
| Lead Temperature | TL | 260 | ℃ | Soldering, 10s | 2 | ||
| ESD Voltage | VESD | 400 | V | Machine Model | 2 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 10 | ℃/W | 2 | |||
| Input Voltage | Vi | 15 | V | 2 | |||
| Operating Junction Temperature | Tj | -25 | 125 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
SCJT1117B-1.8 - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files:
scjt1117b-1-8-etched.step/scjt1117b-1-8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);scjt1117b-1-8.step/scjt1117b-1-8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (7 pp, sha256
fd37c845798118f3, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).