component
L78L12ABUTR-CN
Public Made by Adomby adom
ChipNobo Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. 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
markdownL78L12ABUTR-CN
ChipNobo · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L
L78L12ABUTR-CN from ChipNobo, in a SOT-89-3L. 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 12V output (Vo 11.5-12.5V at 25°C), up to 0.1A maximum output current, with a 0.1uF output capacitor Co recommended close to the regulator. |
| 2 | GND | power_in | Ground reference pin shared by input and output capacitors; quiescent current is 4.3mA typical and 6.5mA max at 25°C. |
| 3 | IN | power_in | Unregulated input voltage (Vi) with absolute maximum 35V, tested at 19V with a 0.33uF input capacitor Ci recommended close to the regulator. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ChipNobo |
| Package | SOT-89-3L |
| 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 | Vo | 11.5 | 12 | 12.5 | V | 25℃ | 1 |
| Output Voltage | Vo | 11.4 | 12 | 12.6 | V | 14V≤Vi≤27V,Io=1mA~40mA 0-125℃ | 1 |
| Load Regulation | △Vo | 22 | 100 | mV | Io=1mA~100mA 25℃ | 1 | |
| Load Regulation | △Vo | 13 | 50 | mV | Io=1mA~40mA 25℃ | 1 | |
| Line Regulation | △Vo | 55 | 250 | mV | 14.5V≤Vi≤27V 0-125℃ | 1 | |
| Line Regulation | △Vo | 49 | 200 | mV | 16V≤Vi≤27V 25℃ | 1 | |
| Quiescent Current | Iq | 4.3 | 6.5 | mA | 25℃ | 1 | |
| Quiescent Current Change | △Iq | 1.5 | mA | 16V≤Vi≤27V 0-125℃ | 1 | ||
| Quiescent Current Change | △Iq | 0.1 | mA | 1mA≤V I≤40mA 0-125℃ | 1 | ||
| Output Noise Voltage | VN | 70 | uV/Vo | 10Hz≤f≤100KHz 25℃ | 1 | ||
| Ripple Rejection | RR | 37 | 42 | dB | 15V≤Vi≤25V,f=120Hz 25℃ | 1 | |
| Dropout Voltage | Vd | 1.7 | V | 25℃ | 1 | ||
| Input Voltage | Vi | 35 | V | 1 | |||
| Operating Junction Temperature Range | TOPR | -25 | 125 | ℃ | 1 | ||
| Storage Temperature Range | Tstg | -65 | 150 | ℃ | 1 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 166.7 | ℃/W | 1 | |||
| Continuous total dissipation | PD | 0.6 | W | Ta=25℃ | 1 |
CAD (KiCad official)
- Symbol:
L78L12ABUTR-CN - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files:
l78l12abutr-cn-etched.step/l78l12abutr-cn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78l12abutr-cn.step/l78l12abutr-cn.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ChipNobo datasheet (4 pp, sha256
29f0b5543b52ace6, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).