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ETA8123S2G
Public Made by Adomby adom
ETA(钰泰) DC-DC Converters, SOT-23-6. 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
markdownETA8123S2G
ETA(钰泰) · DC-DC Converters · SOT-23-6
ETA8123S2G from ETA(钰泰), in a SOT-23-6. 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 | BST | power_out | Bootstrap pin; connect a 10nF capacitor from this pin to SW. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | FB | input | Feedback input; connect an external resistor divider from the output to FB and GND to set VOUT, with a 0.6V typical FB voltage (0.593V to 0.612V) and R2 between 1kΩ and 20kΩ. |
| 4 | EN | input | Enable pin; drive high to enable the part, low or floating to disable it, with a rising threshold of 1.0V to 1.4V. |
| 5 | IN | power_in | Supply voltage input for 4V to 18V operation; bypass with a 10μF ceramic capacitor to GND. |
| 6 | SW | output | Inductor connection; connect the inductor between SW and the regulator output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ETA(钰泰) |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | 4 | 18 | V | 2 | |||
| Input Shutdown Current | 8 | 14 | µA | 2 | |||
| FB Voltage | 0.593 | 0.6 | 0.612 | V | 2 | ||
| FB Input Current | 0 | 1 | µA | 2 | |||
| EN Rising Threshold | 1 | 1.2 | 1.4 | V | Rising | 3 | |
| EN Falling Threshold | 0.9 | 1.1 | 1.3 | V | Falling | 3 | |
| EN Input Current | 2 | 6 | uA | VEN=2V | 3 | ||
| Ambient Temperature Range | -40 | 85 | °C | 2 | |||
| Junction Temperature Range | -40 | 125 | °C | 2 | |||
| IN, EN Voltage | -0.3 | 19 | V | 2 | |||
| SW Voltage | -0.3 | 19 | V | Note (1): -5V for <10ns; note (2): 23V for <10ns | 2 | ||
| BST Voltage | -0.3 | V | Maximum printed as SW+6V | 2 | |||
| FB Voltage (absolute maximum) | -0.3 | 6 | V | 2 | |||
| Junction Temperature (absolute maximum) | 150 | °C | 2 | ||||
| Storage Temperature Range | -55 | 150 | °C | 2 | |||
| Power Dissipation | PD | 1.5 | W | Note (5): PD=(Tjmax-Ta)/θJA | 2 | ||
| Input UVLO Rising | 3.7 | V | Hysteresis=320mV | 2 | |||
| Input OVP Rising | 19 | V | Hysteresis=0.9V | 2 | |||
| Input Supply Current | 230 | µA | VFB=0.65V, no switching | 2 | |||
| Switching Frequency | 600 | kHz | 2 | ||||
| Short Circuit Hiccup On Time | 1.5 | mS | Short circuit hiccup | 3 | |||
| Short Circuit Hiccup Off Time | 4.5 | mS | Short circuit hiccup | 3 | |||
| FB Hiccup Threshold | 0.2 | V | 3 | ||||
| High Side Switch On Resistance | 95 | mΩ | 3 | ||||
| Low Side Switch On Resistance | 50 | mΩ | 3 | ||||
| High Side Current Limit | 5 | A | 3 | ||||
| SW Leakage Current | 10 | µA | VIN=VSW=12V, EN=GND | 3 | |||
| Thermal Shutdown | 150 | °C | Rising, Hysteresis =20° C | 3 | |||
| Thermal Resistance Junction-to-Ambient (EVB) | θJA | 80 | C/W | Note (4): 1OZ two-layer ETA EVB, TA=25C | 2 | ||
| Thermal Resistance Junction-to-Case (JESD51-3) | θJC | 90 | C/W | JESD51-3 JEDEC board, note (3) | 2 | ||
| Thermal Resistance Junction-to-Case (EVB) | θJC | 30 | C/W | Note (4): 1OZ two-layer ETA EVB, TA=25C | 2 |
CAD (KiCad official)
- Symbol:
ETA8123S2G - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
eta8123s2g-etched.step/eta8123s2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eta8123s2g.step/eta8123s2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ETA(钰泰) datasheet (9 pp, sha256
0f7e7616d73b05c0, 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).