component
7905
Public Made by Adomby adom
YFW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. 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
markdown7905
YFW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
7905 from YFW, in a TO-252. 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 7905 negative regulator. |
| 2 | IN | power_in | Negative input voltage, absolute maximum -30 V; also connected to the tab (pin 2 shown on tab). |
| 3 | OUT | power_out | Regulated -5 V output, output current in excess of 1.5 A with internal current limiting. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | TO-252 |
| 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 | -4.8 | -5 | -5.2 | V | Tj=25°C | 2 |
| Output voltage | VO | -4.75 | -5 | -5.25 | V | IO=5mA～1A, PO<15W, VI=-7V～-20V | 2 |
| Line regulation | ΔVO | 100 | mV | Tj=25°C, VI=-7V～-25V | 2 | ||
| Line regulation | ΔVO | 50 | mV | VI=-8V～-12V | 2 | ||
| Load regulation | ΔVO | 100 | mV | Tj=25°C, IO=5mA～1.5A | 2 | ||
| Load regulation | ΔVO | 50 | mV | IO=0.25A～0.75A | 2 | ||
| Quiescent current | IQ | 6 | mA | Tj=25°C | 2 | ||
| Quiescent current change | ΔIQ | 0.5 | mA | IO=5mA～1.5A | 2 | ||
| Quiescent current change | ΔIQ | 0.8 | mA | VI=-8～-25V | 2 | ||
| Output voltage drift | △V/△T | -0.4 | mV/°C | IO=5mA | 2 | ||
| Output noise voltage | VN | 40 | μV | f=10HZ～100KHZ | 2 | ||
| Ripple rejection | RR | 60 | dB | f=120Hz, ΔVI=10V | 2 | ||
| Dropout voltage | VD | 2 | V | Tj=25°C, IO=1.5A | 2 | ||
| Short circuit current | ISC | 300 | mA | Tj=25, VI=-30V | 2 | ||
| Peak current | IPK | 2.2 | A | Tj=25°C | 2 | ||
| Input voltage | VIN | -30 | V | 1 | |||
| Output voltage | VO | -5 | V | 1 | |||
| Operating junction temperature range | Tj | 0 | 125 | °C | 1 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 1 | ||
| Thermal resistance junction-air | RθJA | 65 | °C/W | 1 | |||
| Thermal resistance junction-case | RθJC | 5 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
7905 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
7905-etched.step/7905-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);7905.step/7905.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (3 pp, sha256
a7fc4cfb04e18951, 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).