component
CJU1117B-5.0
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CJU1117B-5.0
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L
CJU1117B-5.0 from Changjing, in a TO-252-2L. 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 | GND / ADJ | power_in | Ground pin for the fixed CJU1117B-5.0 (labelled GND on its typical application circuit); it is the ADJ pin on the CJU1117B-ADJ version. |
| 2 | OUTPUT | power_out | Regulated output pin, fixed at 5.0 V for this part; the datasheet recommends 10µF tantalum input and 22µF tantalum output capacitors. |
| 3 | IN | power_in | Unregulated input pin; the datasheet gives a 20 V absolute maximum input voltage and a 15 V recommended input voltage, with a 1.3 V dropout at 1 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-252-2L |
| 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 (TJ=25°C, low limit) | VO | 4.925 | 5 | 5.075 | V | VIN≤10V, TJ=25℃ unless otherwise specified | 3 |
| Output Voltage (over temperature) | VO | 4.9 | 5 | 5.1 | V | 3 | |
| Dropout Voltage | VD | 1.3 | V | ΔVREF=1%, IOUT=1.0A | 3 | ||
| Adjust Pin Current | IADJ | 60 | 120 | μA | VIN≤10V, TJ=25℃ unless otherwise specified | 3 | |
| Minimum Load Current | 5 | 10 | μA | VIN≤10V, TJ=25℃ unless otherwise specified | 3 | ||
| Quiescent Current | Iq | 1.7 | 5 | mA | VIN≤10V, TJ=25℃ (ADJ except) | 3 | |
| Ripple Rejection | 60 | 70 | dB | f=10kHz, COUT=22μF Tantalum, VIN-VOUT=3V, IOUT=1A | 3 | ||
| Temperature Stability | 0.5 | % | 3 | ||||
| Long-Term Stability | 0.3 | % | TA=125℃, 1000h | 3 | |||
| RMS Output Noise (% of VOUT) | 0.003 | % | TA=25℃, 10Hz≤f≤10kHz | 3 | |||
| Input Voltage (absolute maximum) | Vi | 20 | V | 2 | |||
| Maximum Junction Temperature | TJ Max | -40 | 150 | ℃ | 2 | ||
| Storage Temperature | Tstg | -40 | 150 | ℃ | 2 | ||
| Operating Ambient Temperature (TA) | TA | -40 | 85 | ℃ | 2 | ||
| ESD Voltage (Machine Model) | VESD | 250 | V | Machine Model | 2 | ||
| Lead Temperature (Soldering) | TL | 260 | ℃ | 10 s soldering | 2 | ||
| Input Voltage (recommended) | Vi | 15 | V | 2 | |||
| Operating Junction Temperature | TJ | -40 | 125 | ℃ | 2 | ||
| Thermal Resistance Junction to Ambient | RθJA | 80 | ℃/W | Junction to ambient; footnote: 46 to >90 ℃/W depending on mounting and copper area | 2 |
CAD (KiCad official)
- Symbol:
CJU1117B-5.0 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files:
cju1117b-5-0-etched.step/cju1117b-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cju1117b-5-0.step/cju1117b-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (9 pp, sha256
430e9fa8853826d3, 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).
# CJU1117B-5.0
**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L
CJU1117B-5.0 from Changjing, in a TO-252-2L. 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 | GND / ADJ | power_in | Ground pin for the fixed CJU1117B-5.0 (labelled GND on its typical application circuit); it is the ADJ pin on the CJU1117B-ADJ version. |
| 2 | OUTPUT | power_out | Regulated output pin, fixed at 5.0 V for this part; the datasheet recommends 10µF tantalum input and 22µF tantalum output capacitors. |
| 3 | IN | power_in | Unregulated input pin; the datasheet gives a 20 V absolute maximum input voltage and a 15 V recommended input voltage, with a 1.3 V dropout at 1 A. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-252-2L |
| 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 (TJ=25°C, low limit) | VO | 4.925 | 5 | 5.075 | V | VIN≤10V, TJ=25℃ unless otherwise specified | 3 |
| Output Voltage (over temperature) | VO | 4.9 | 5 | 5.1 | V | | 3 |
| Dropout Voltage | VD | | | 1.3 | V | ΔVREF=1%, IOUT=1.0A | 3 |
| Adjust Pin Current | IADJ | | 60 | 120 | μA | VIN≤10V, TJ=25℃ unless otherwise specified | 3 |
| Minimum Load Current | | | 5 | 10 | μA | VIN≤10V, TJ=25℃ unless otherwise specified | 3 |
| Quiescent Current | Iq | | 1.7 | 5 | mA | VIN≤10V, TJ=25℃ (ADJ except) | 3 |
| Ripple Rejection | | 60 | 70 | | dB | f=10kHz, COUT=22μF Tantalum, VIN-VOUT=3V, IOUT=1A | 3 |
| Temperature Stability | | | | 0.5 | % | | 3 |
| Long-Term Stability | | | | 0.3 | % | TA=125℃, 1000h | 3 |
| RMS Output Noise (% of VOUT) | | | | 0.003 | % | TA=25℃, 10Hz≤f≤10kHz | 3 |
| Input Voltage (absolute maximum) | Vi | | | 20 | V | | 2 |
| Maximum Junction Temperature | TJ Max | -40 | | 150 | ℃ | | 2 |
| Storage Temperature | Tstg | -40 | | 150 | ℃ | | 2 |
| Operating Ambient Temperature (TA) | TA | -40 | | 85 | ℃ | | 2 |
| ESD Voltage (Machine Model) | VESD | | | 250 | V | Machine Model | 2 |
| Lead Temperature (Soldering) | TL | | | 260 | ℃ | 10 s soldering | 2 |
| Input Voltage (recommended) | Vi | | | 15 | V | | 2 |
| Operating Junction Temperature | TJ | -40 | | 125 | ℃ | | 2 |
| Thermal Resistance Junction to Ambient | RθJA | | 80 | | ℃/W | Junction to ambient; footnote: 46 to >90 ℃/W depending on mounting and copper area | 2 |
## CAD (KiCad official)
- Symbol: `CJU1117B-5.0`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files: `cju1117b-5-0-etched.step` / `cju1117b-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cju1117b-5-0.step` / `cju1117b-5-0.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908243801952256) (9 pp, sha256 `430e9fa8853826d3`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/cju1117b-5-0-datasheet.pdf)