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EG1203
Public Made by Adomby adom
EG Micro Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, ESOP-8. 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
markdownEG1203
EG Micro · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8
EG1203 from EG Micro, in a ESOP-8. 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 | VIN | power_in | Chip supply input; the absolute maximum rating for VIN is -0.3 V to 36 V. |
| 2 | VO1 | output | 3.3 V linear regulator output, rated for a maximum output current of 100 mA. |
| 3 | IO | output | Output port of the integrated overcurrent-protection transistor; absolute maximum rating is -0.3 V to VO1+0.3 V. |
| 4 | IS | input | Input port of the integrated overcurrent-protection transistor; absolute maximum rating is -0.3 V to 36 V. |
| 5 | Bin | input | Input port of the integrated power transistor, which can drive a buzzer or relay; absolute maximum rating is -0.3 V to 36 V. |
| 6 | GND | power_in | Chip ground. |
| 7 | CO | output | Collector output port of the integrated power transistor; absolute maximum rating is -0.3 V to 36 V. |
| 8 | VO2 | output | 12 V linear regulator output, rated for a maximum output current of 100 mA; absolute maximum rating is -0.3 V to 36 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Power input supply voltage (VIN) | VIN | -0.3 | 36 | V | 8 | ||
| 3.3V power output (VO1) | VO1 | -0.3 | V | 8 | |||
| Overcurrent-protection transistor output (IO) | IO | -0.3 | V | 8 | |||
| Overcurrent-protection transistor input (IS) | IS | -0.3 | 36 | V | 8 | ||
| Power transistor input (Bin) | Bin | -0.3 | 36 | V | 8 | ||
| Power transistor collector output (CO) | CO | -0.3 | 36 | V | 8 | ||
| 12V power output (VO2) | VO2 | -0.3 | 36 | V | 8 | ||
| Ambient temperature (TA) | TA | -45 | 125 | ℃ | 8 | ||
| Storage temperature (Tstr) | Tstr | -55 | 150 | ℃ | 8 | ||
| Soldering temperature (TL) | TL | 300 | ℃ | T=10S | 8 | ||
| ESD protection, human body model (HBM) | ESD（HBM） | 2 | KV | 8 | |||
| Quiescent current | Iq | 3.5 | 6 | mA | 8V≤Vi≤36V | 9 | |
| 3.3V output voltage | VO2 | 3.2 | 3.3 | 3.3 | V | Io2=1mA | 9 |
| 3.3V load regulation | ΔVo2 | 12 | 60 | mV | Io2=1mA~80mA | 9 | |
| 3.3V line regulation | ΔVo2 | 19 | 60 | mV | 8V≤Vi≤36V | 9 | |
| 3.3V ripple rejection | RR | 41 | 50 | dB | 10V≤Vi≤20V, f=120Hz | 9 | |
| 12V output voltage | VO2 | 11.7 | 12 | 12.3 | V | Io2=1mA | 9 |
| 12V load regulation | ΔVo2 | 20 | 60 | mV | Io2=1mA~80mA | 9 | |
| 12V line regulation | ΔVo2 | 40 | 100 | mV | 14V≤Vi≤36V | 9 | |
| 12V ripple rejection | RR | 41 | 50 | dB | 10V≤Vi≤20V, f=120Hz | 9 | |
| Power transistor saturation voltage | VCE | 1.5 | V | Bin=3.3V，Ic=80mA | 9 |
CAD (KiCad official)
- Symbol:
EG1203 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
eg1203-etched.step/eg1203-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eg1203.step/eg1203.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EG Micro datasheet (10 pp, sha256
ce4d9478c951b1d4, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).