component
79L15U
Public Made by Adomby adom
CBI Linear Voltage Regulators (LDO), SOT-89-3. 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
markdown79L15U
CBI · Linear Voltage Regulators (LDO) · SOT-89-3
79L15U from CBI, in a SOT-89-3. 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 | GND | power_in | Ground reference pin of the negative regulator, common to input and output. |
| 2 | IN | power_in | Unregulated negative input voltage, absolute maximum -35 V, with a recommended 0.33μF input capacitor Ci. |
| 3 | OUT | power_out | Regulated -15 V output delivering up to 100mA, with a recommended 0.1μF output capacitor Co. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 | -14.4 | -15 | -15.6 | V | 25℃ | 1 |
| Output voltage | Vo | -14.25 | -15 | -15.75 | V | -17.5V≤Vi≤-30V, Io=1mA~40mA | 1 |
| Load regulation | ΔVo | 25 | 150 | mV | Io=1mA~100mA, Vi=-23V, 25℃ | 1 | |
| Load regulation | ΔVo | 15 | 75 | mV | Io=1mA~40mA, Vi=-23V, 25℃ | 1 | |
| Line regulation | ΔVo | 65 | 300 | mV | -17.5V≤Vi≤-30V, Io=40mA, 25℃ | 1 | |
| Line regulation | ΔVo | 50 | 250 | mV | -20V≤Vi≤-30V, Io=40mA, 25℃ | 1 | |
| Quiescent current | Iq | 6.5 | mA | 25℃ | 1 | ||
| Quiescent current change | ΔIq | 1.5 | mA | -20V≤Vi≤-30V, Io=40mA, 0-125℃ | 1 | ||
| Quiescent current change | ΔIq | 0.1 | mA | 1mA≤IO≤40mA, 0-125℃ | 1 | ||
| Ripple rejection | RR | 34 | 39 | dB | -18.5V≤Vi≤-28.5V, f=120Hz, 0-125℃ | 1 | |
| Output noise voltage | VN | 90 | µV | 10Hz≤f≤100KHz, 25℃ | 1 | ||
| Dropout voltage | Vd | 1.7 | V | 25℃ | 1 | ||
| Input voltage | Vi | -35 | V | 1 | |||
| Operating junction temperature range | TOPR | 0 | 125 | ℃ | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | ℃ | 1 | ||
| Maximum output current | IOM | 100 | mA | 1 |
CAD (KiCad official)
- Symbol:
79L15U - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
79l15u-etched.step/79l15u-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);79l15u.step/79l15u.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (2 pp, sha256
35f1f669bdfaa2c8, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).