component
ETA2845S2G
Public Made by Adomby adom
etasolution 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
markdownETA2845S2G
etasolution · DC-DC Converters · SOT-23-6
ETA2845S2G from etasolution, 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 | passive | Bootstrap pin; connect a 100nF capacitor from this pin to SW. The absolute maximum rating is -0.3V to SW+6V. |
| 2 | GND | power_in | Ground reference for the device; the input capacitor should be returned to GND via a trace under the package, not through a via. Absolute maximum ratings are referenced to this pin. |
| 3 | FB | input | Feedback input; connect an external resistor divider from the output to FB and GND to set VOUT, with a 0.8V FB threshold and a -0.3V to 6V absolute maximum rating. |
| 4 | EN | input | Enable pin; drive high to enable the part and low to disable it, with a 1.5V rising threshold (130mV hysteresis) and an absolute maximum of -0.3V to VIN+0.3V. |
| 5 | IN | power_in | Supply voltage input, operating from 5V to 38V with a 42V standoff rating; bypass with a 10μF ceramic capacitor to GND. |
| 6 | SW | output | Inductor connection; connect the inductor between SW and the regulator output, with an absolute maximum of -0.3V (-3.0V for under 10ns) to VIN+0.3V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | etasolution |
| 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 | 5 | 38 | V | 2 | |||
| FB Feedback Voltage | 0.784 | 0.8 | 0.816 | V | 2 | ||
| EN Input Current | 1 | 5 | μA | VIN=12V, VEN=5V | 2 | ||
| IN Voltage | -0.3 | 42 | V | 2 | |||
| SW Voltage | -0.3 | V | Transient -3.0V for <10ns; maximum printed as VIN+0.3V | 2 | |||
| EN Voltage | -0.3 | V | Maximum printed as VIN+0.3V | 2 | |||
| BST Voltage | -0.3 | V | Maximum printed as SW+6V | 2 | |||
| FB Voltage | -0.3 | 6 | V | 2 | |||
| Operating Temperature Range | -40 | 85 | °C | 2 | |||
| Storage Temperature Range | -55 | 150 | °C | 2 | |||
| Input Standoff Voltage | 42 | V | 2 | ||||
| Input UVLO Rising | 4.5 | V | Rising, Hysteresis=200mV | 2 | |||
| Input OVP Rising | 37.5 | V | Rising, Hysteresis=1.5V | 2 | |||
| Input Supply Current | 0.42 | mA | VFB =0.85V | 2 | |||
| Input Shutdown Current | 10 | μA | 2 | ||||
| FB Input Current | 0.01 | μA | 2 | ||||
| Switching Frequency | 700 | KHz | 2 | ||||
| Maximum Duty Cycle | 99 | % | 2 | ||||
| FoldBack Frequency | 60 | KHz | VFB = 0V | 2 | |||
| High side Switch On Resistance | 790 | mΩ | ISW =100mA | 2 | |||
| High side Switch Current Limit | 0.8 | A | 2 | ||||
| SW Leakage Current | 10 | μA | VIN=12V, VSW=0, EN= GND | 2 | |||
| EN Input Voltage | 1.5 | V | Rising, Hysteresis=130mV | 2 | |||
| Thermal Shutdown | 150 | °C | Hysteresis=40°C | 2 | |||
| Thermal Resistance Junction-to-Case | θJC | 110 | °C/W | SOT23-6 | 2 |
CAD (KiCad official)
- Symbol:
ETA2845S2G - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
eta2845s2g-etched.step/eta2845s2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eta2845s2g.step/eta2845s2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: etasolution datasheet (9 pp, sha256
8d2b819845c1eac1, retrieved 2026-10-18, 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).