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CJ9117C33T5
Public Made by Adomby adom
Changjing DC-DC Converters, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCJ9117C33T5
Changjing · DC-DC Converters · SOT-23-5L
CJ9117C33T5 from Changjing, in a SOT-23-5L. 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 | EN | input | Shutdown pin: driving it High (H) gives normal operation and Low (L) stops the step-up; the EN pin voltage is limited to VSS-0.3 to VSS+8 V. |
| 2 | VOUT | power_out | Output voltage pin, with a VOUT pin voltage limit of VSS-0.3 to VSS+8 V. |
| 3 | NC | unconnected | Not connected (N.C.) on the CJ9117C SOT-23-5L variant. |
| 4 | VSS | power_in | GND pin, the circuit ground reference for the converter. |
| 5 | LX | passive | External inductor connection pin for the built-in switching MOSFET; the LX pin voltage is limited to VSS-0.3 to VSS+8 V and LX pin current to 1000 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 6 | V | 4 | |||
| Operation start voltage | VST1 | 0.9 | V | IOUT= 1 mA | 4 | ||
| Oscillation start voltage | VST2 | 0.8 | V | No external parts, voltage applied to VOUT LX pulled up to VOUT via 300Ω resistor | 4 | ||
| Current consumption 2 | ISS2 | 6 | 10 | µA | VOUT=VOUT+0.5 V | 4 | |
| Current consumption during shutdown | ISSS | 1 | µA | VEN = 0 V | 4 | ||
| Switching current | ISW | 100 | 200 | mA | VLX= 0.4 V | 4 | |
| Switching transistor leakage current | ISWQ | 1 | µA | No external parts, VLX=VOUT =8 V, VEN = 0 V | 4 | ||
| Line regulation | ΔVOUT1 | 20 | 50 | mV | VIN= 0.4×VOUT～0.6×VOUT | 4 | |
| Load regulation | ΔVOUT2 | 20 | 50 | mV | IOUT= 10 µA ~ 50mA | 4 | |
| Maximum oscillation frequency | fOSC | 100 | KHz | VOUT= 0.95×VOUT, measure waveform at LX pin | 4 | ||
| Duty ratio 1 | Duty1 | 70 | 78 | 85 | % | VOUT= 0.95×VOUT, measure waveform at LX pin | 4 |
| Shutdown pin input voltage (oscillation) | VSH | 0.75 | V | VOUT=0.95×VOUT, judge oscillation at LX pin | 4 | ||
| Shutdown pin input voltage (stop) | VSL1 | 0.3 | V | VOUT= 0.95×VOUT, judge stop at LX pin | 4 | ||
| Shutdown pin input current (high) | ISH | -0.1 | 0.1 | µA | VEN＝6V | 4 | |
| Shutdown pin input current (low) | ISL | -0.1 | 0.1 | µA | VEN＝0V | 4 | |
| VOUT pin voltage | VOUT | -0.3 | 8 | V | Referenced to VSS (printed VSS-0.3 ~ VSS+8) | 3 | |
| EN pin voltage | EN | -0.3 | 8 | V | Referenced to VSS (printed VSS-0.3 ~ VSS+8) | 3 | |
| LX pin voltage | VLX | -0.3 | 8 | V | Referenced to VSS (printed VSS-0.3 ~ VSS+8) | 3 | |
| LX pin current | ILX | 1000 | mA | 3 | |||
| Power dissipation | PD | 400 | mW | SOT-23-5L package | 3 | ||
| Operating temperature | Topr | -40 | 85 | °C | 3 | ||
| Storage temperature | Tstg | -40 | 125 | °C | 3 | ||
| Soldering temperature | Tsolder | 260 | °C | 10 s | 3 | ||
| Duty ratio 2 | Duty2 | 66 | % | Measure waveform at LX pin with light load | 4 | ||
| Efficiency | EFFI | 85 | % | 4 |
CAD (KiCad official)
- Symbol:
CJ9117C33T5 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
cj9117c33t5-etched.step/cj9117c33t5-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj9117c33t5.step/cj9117c33t5.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (12 pp, sha256
fbc3a00f08c55c0d, retrieved 2026-10-17, 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).