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ETA9880E8A
Public Made by Adomby adom
ETA(钰泰） Battery Management, 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
markdownETA9880E8A
ETA(钰泰） · Battery Management · ESOP-8
ETA9880E8A from ETA(钰泰）, 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 | IN | power_in | DC input pin (20V standoff, 4.5V to 6V input range); bypass with a 10uF capacitor from this pin to GND. |
| 2 | LED1 | output | Fuel gauge LED1 connection pin for battery level and charge/discharge status indication. |
| 3 | LED2 | output | Fuel gauge LED2 connection pin for battery level and charge/discharge status indication. |
| 4 | LED3 | output | Fuel gauge LED3 connection pin for battery level and charge/discharge status indication. |
| 5 | PB | bidirectional | Push button input that activates boost when pressed with no input present (hold 0.8S toggles the flashlight), and also an internal open-drain flashlight output. |
| 6 | BAT | power_in | Battery voltage sense pin; connect a separate sensing wire to the battery positive terminal and bypass with a 10uF capacitor to GND as close as possible. |
| 7 | SW | passive | Switching pin; connect an inductor (2.2uH typical) between this pin and the BAT pin. |
| 8 | OUT | power_out | USB 5.05V output during boost and charging input pin during charging; bypass with 2x22uF capacitors to GND as close as possible. |
| 9 | GND | power_in | Exposed pad/chip substrate, connected to GND with a large area of ground trace for good thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ETA(钰泰） |
| 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 |
|---|---|---|---|---|---|---|---|
| Battery CV Voltage (ETA9880 variant, 4.2V) | 4.16 | 4.2 | 4.24 | V | 2 | ||
| Output Voltage Range | VOUT | 4.95 | 5.05 | 5.15 | V | IOUT=0A | 3 |
| Output Current Limit | 2.4 | 2.8 | 3.2 | A | VBAT=3.8V | 3 | |
| IN Voltage | -0.3 | 20 | V | 2 | |||
| OUT Voltage | -0.3 | 6 | V | 2 | |||
| Operating Temperature Range | -40 | 85 | °C | 2 | |||
| Storage Temperature Range | -55 | 150 | °C | 2 | |||
| Thermal Resistance ΘJC (ESOP8) | ΘJC | 10 | oC/W | 2 | |||
| Thermal Resistance ΘJA (ESOP8) | ΘJA | 50 | oC/W | 2 |
CAD (KiCad official)
- Symbol:
ETA9880E8A - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
eta9880e8a-etched.step/eta9880e8a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eta9880e8a.step/eta9880e8a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ETA(钰泰） datasheet (9 pp, sha256
8d3992b6150db985, retrieved 2026-10-17, tier: lcsc) - 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).