component

ETA4054S2F

Public Made by Adom

by adom

etasolution Battery Management, SOT23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

markdown

ETA4054S2F

etasolution · Battery Management · SOT23-5

ETA4054S2F from etasolution, in a SOT23-5. 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 STAT output Open-drain charge status output that is pulled low while the battery is charging and becomes high-impedance after the charge cycle completes, with a STAT/STDBY output low voltage of 0.6V max at 5mA.
2 GND power_in Ground pin, which is connected to the ISET program resistor.
3 BAT power_out Charge current output that supplies the battery and regulates the final float voltage to 4.2V, set by an internal precision resistor divider; the pin is rated 16V standoff.
4 VIN power_in Positive input supply that needs to be bypassed with at least a 1μF capacitor, with an input supply range of 4.25V to 16V and a 20V absolute maximum.
5 ISET passive Charge-current program and monitor pin that is held at 1V in constant-current mode through a 1% resistor to GND; disconnecting the resistor puts the charger into shutdown and reconnecting it restarts a charge cycle.

Key specifications

Parameter Value
Manufacturer etasolution
Package SOT23-5
Category Power Management (PMIC)
Pins 5

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 Supply Voltage 4.25 16 V 2
Input Voltage Range for Charging 4.25 6 V 2
Input Supply Current 300 2000 μA Charge Mode (Note 1) 2
Input Supply Current 60 100 μA Standby Mode (Charge Terminated) 2
Input Supply Current 25 50 μA Shutdown Mode (ISET Not Connected, VIN<VBAT, or VIN<VULO) 2
Regulated Output (Float) Voltage 4.158 4.2 4.242 V IBAT = 40mA 2
BAT Pin Current 90 100 110 mA Rset = 10K, Current Mode 2
BAT Pin Current 432 480 528 mA Rset = 2K, Current Mode 2
BAT Pin Current 820 920 1020 mA Rset = 1K, Current Mode 2
BAT Pin Current 0 -2 -3 μA Standby Mode, VBAT = 4.2V 2
BAT Pin Current 0.25 0.35 μA Shutdown Mode, ISET Not Connected 2
Trickle Charge Current 20 50 100 mA VBAT < VTRIKL, Rset = 2K 2
Trickle Charge Threshold Voltage 2.75 2.93 3.09 V VBAT Rising 2
Trickle Charge Hysteresis Voltage 100 130 165 mV 2
VIN Undervoltage Lockout Threshold 3.05 3.35 3.6 V From VIN Low to High 2
VIN Undervoltage Lockout Hysteresis 0.4 0.55 0.65 V 3
Manual Shutdown Threshold Voltage 1.1 1.2 1.3 V ISET Pin Rising 3
Manual Shutdown Threshold Voltage 0.8 1 1.13 V ISET Pin Falling 3
VIN-VBAT Lockout Threshold Voltage 70 100 140 mV VIN from Low to High 3
VIN-VBAT Lockout Threshold Voltage 10 30 mV VIN from High to Low 3
C/10 Termination Current Threshold 0.085 0.1 0.115 mA/mA Note 2 3
ISET Pin Voltage 0.93 1 1.07 V Current Mode, VBAT=4V 3
STAT/STDBY Pin Output Low Voltage 0.35 0.6 V I_STAT or I_STDBY= 5mA 3
Recharge BAT Threshold Voltage VFLOAT - VRECHRG 90 120 150 mV 3
Termination Comparator Filter Time 400 1000 2500 μs IBAT Falling Below ICHG/10 3
VIN Voltage -0.3 20 V 2
BAT Voltage -0.3 16 V 2
All other pin Voltage -0.3 6 V 2
Operating Temperature Range -40 85 °C 2
Storage Temperature Range -55 150 °C 2
ESD HBM (Human Body Model) 2 KV 2
Thermal Resistance θJC θJC 50 °C/W SOT23-5 2

CAD (KiCad official)

  • Symbol: ETA4054S2F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: eta4054s2f-etched.step / eta4054s2f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta4054s2f.step / eta4054s2f.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: etasolution datasheet (6 pp, sha256 1880c32024554c0d, 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