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CJ78L09C-TAB-ABG
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92. 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
markdownCJ78L09C-TAB-ABG
Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92
CJ78L09C-TAB-ABG from Changjing, in a TO-92. 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 | OUT | output | Output of the regulator, a fixed 9.0V output for this CJ78L09C variant (30V maximum input for VOUT below 10V, 100mA maximum output current). |
| 2 | GND | power_in | Regulator ground; the datasheet specifies no separate limit for this pin, and the 0.33µF input and 0.1µF output capacitors are returned to it. |
| 3 | IN | input | Input to the device; the CJ78L09C recommended input voltage range is up to 30V, with a 36V absolute maximum input voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-92 |
| 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 (±3% grade, TJ = 25°C) | VOUT | 8.73 | 9 | 9.27 | V | TJ = 25°C, ±3% grade | 11 |
| Output voltage over line, load and temperature | VOUT | 8.55 | 9 | 9.45 | V | VIN = 12 to 24V, IOUT = 1 to 100mA, TJ = -40 to 125°C, PD ≤ 0.75W | 11 |
| Output current | IOUT | 100 | mA | TJ = 25°C | 11 | ||
| Quiescent current | IQ | 3 | 5.5 | mA | IOUT = 0mA | 11 | |
| Quiescent current change (line) | ΔIQ | 1.5 | mA | VIN = 13 to 24V, TJ = -40 to 125°C | 11 | ||
| Quiescent current change (load) | ΔIQ | 0.1 | mA | IOUT = 1 to 40mA, TJ = -40 to 125°C | 11 | ||
| Dropout voltage | VDO | 1.7 | 2 | V | IOUT = 40mA | 11 | |
| Dropout voltage | VDO | 1.8 | 2.3 | V | IOUT = 100mA | 11 | |
| Line regulation | ΔVLINE | 8 | 150 | mV | VIN = 12 to 24V | 11 | |
| Load regulation | ΔVLOAD | 10 | 70 | mV | IOUT = 1 to 100mA | 11 | |
| Ripple rejection | RR | 42 | 51 | dB | VIN = 15 to 25V, f = 120Hz | 11 | |
| Input voltage | VIN | 30 | V | 11 | |||
| Input voltage range (CJ78L09C) | VIN | 30 | V | 6 | |||
| Maximum input voltage | VIN MAX | 36 | V | 6 | |||
| Maximum junction temperature | TJ Max | 150 | °C | 6 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 6 | ||
| Soldering temperature | Tsolder | 260 | °C | 10s | 6 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 6 | ||
| Output voltage tolerance at TJ = 25°C (±3% grade) | -3 | 3 | % | TJ = 25°C, ±3% grade | 1 | ||
| Output voltage tolerance over temperature range | -5 | 5 | % | over the temperature range | 1 | ||
| Junction-to-ambient thermal resistance (TO-92) | RΘJA | 167.2 | °C/W | TO-92, still air, TA = 25°C, 1 in² FR-4 board with 2 oz copper | 7 | ||
| Junction-to-case thermal resistance (TO-92) | RΘJC | 40.3 | °C/W | TO-92 | 7 | ||
| Reference maximum power dissipation for continuous operation (TO-92) | PD Ref | 0.6 | W | TO-92, continuous operation | 7 |
CAD (KiCad official)
- Symbol:
CJ78L09C-TAB-ABG - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
cj78l09c-tab-abg-etched.step/cj78l09c-tab-abg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cj78l09c-tab-abg.step/cj78l09c-tab-abg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (30 pp, sha256
ccb056fb5d1abe3f, retrieved 2026-10-21, 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).