component

ETA2845S2G

Public Made by Adom

by adom

etasolution DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ETA2845S2G

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta2845s2g.step / eta2845s2g.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF