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CJ78L15-TA

Public Made by Adom

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Changjing Linear Voltage Regulators (LDO), TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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CJ78L15-TA

Changjing · Linear Voltage Regulators (LDO) · TO-92-3

CJ78L15-TA from Changjing, in a TO-92-3. 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 power_out Regulated 15 V output (14.55-15.45 V at Vi=23V, Io=40mA, Tj=25°C), maximum output current 0.1 A; a 0.1µF bypass capacitor is recommended close to the regulator.
2 GND power_in Ground reference pin; quiescent current is typically 4.6 mA with a 6.5 mA maximum.
3 IN power_in Unregulated input voltage pin, specified for 17.5 V to 30 V operation; a 0.33µF bypass capacitor is recommended close to the regulator.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92-3
Category Power Supply Chip
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 Vo 14.55 15 15.45 V TJ=25℃ 2
Output voltage Vo 14.25 15 15.75 V 17.5V≤Vi≤30V, Io=1mA-40mA 2
Load regulation ΔVo 25 150 mV Io=1mA-100mA, Vi=23V, TJ=25℃ 2
Load regulation ΔVo 15 75 mV Io=1mA-40mA, Vi=23V, TJ=25℃ 2
Line regulation ΔVo 65 300 mV 17.5V≤Vi≤30V, Io=40mA, TJ=25℃ 2
Line regulation ΔVo 58 250 mV 19V≤Vi≤30V, Io=40mA, TJ=25℃ 2
Quiescent current Iq 4.6 6.5 mA 2
Quiescent current change ΔIq 1.5 mA 19V≤Vi≤30V, Io=40mA 2
Quiescent current change ΔIq 0.1 mA 1mA≤IO≤40mA, Vi=23V 2
Ripple rejection RR 34 39 dB 18.5V≤Vi≤28.5V, f=120Hz 2
Dropout voltage Vd 1.7 V 2
Output noise voltage VN 82 10Hz≤f≤100KHz, TJ=25℃ 2
Maximum output current IOM 0.1 A 1
Continuous total dissipation PD 0.625 W 1
Operating junction temperature range TOPR -40 125 °C 1
Storage temperature range TSTG -65 150 °C 1

CAD (KiCad official)

  • Symbol: CJ78L15-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: cj78l15-ta-etched.step / cj78l15-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj78l15-ta.step / cj78l15-ta.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Changjing datasheet (6 pp, sha256 be8bd1745f092cbb, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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