component

U0058

Public Made by Adom

by adom

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

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U0058

UNI SEMIC · DC-DC Converters · SOT-23-6

U0058 from UNI SEMIC, 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 BS passive Bootstrap pin: a capacitor connected between SW and BST is required to form a floating supply across the high-side switch driver.
2 GND power_in Ground pin.
3 FB input Adjustable-version feedback input; connect FB to the center point of the external resistor divider (feedback voltage 0.780 V to 0.820 V).
4 EN input Drive to a logic-high to enable the IC and to a logic-low to disable it and enter micro-power shutdown mode (EN rising threshold 1.2 V, falling threshold 0.9 V).
5 IN power_in Power supply pin; operating input range is 4.5 V to 45 V, with an absolute maximum VIN of 55 V.
6 SW output Switching pin; absolute maximum SW voltage is -0.3 V to 55 V.

Key specifications

Parameter Value
Manufacturer UNI SEMIC
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
VIN voltage VIN -0.3 55 V 4
EN voltage -0.3 55 V 4
SW voltage -0.3 55 V 4
FB voltage -0.3 6 V 4
Operating junction temperature, TJ TJ -40 125 °C 4
Storage temperature Tstg -65 150 °C 4
Lead temperature (soldering, 10 sec.) 260 °C Soldering, 10 sec. 4
Operating junction temperature -40 125 °C 4
Operating temperature range -40 85 °C 4
Input voltage VIN 4.5 45 V 4
Output current 0 0.6 A 4
Input Voltage Range 4.5 45 V 5
Feedback Voltage 0.78 0.8 0.82 V 5
Supply Current (Quiescent) 0.4 0.8 mA VEN =3.0V 5
Under-Voltage Lockout Threshold, Wake up VIN Voltage 4.2 4.4 V 5
Under-Voltage Lockout Threshold, Shutdown VIN Voltage 3.4 3.7 V 5
Supply Current (Shutdown) 10 uA VEN =0 or EN = GND 5
High-Side Switch On-Resistance 500 mΩ ISW=100mA 5
Low-Side Switch On-Resistance 300 mΩ ISW=-100mA 5
Valley Switch Current Limit 1 A 5
Over Voltage Protection Threshold 48 V 5
Switching Frequency 850 KHz 5
Maximum Duty Cycle 89 % VFB=90% 5
Minimum On-Time 83 nS 5
EN Rising Threshold 1.2 V 5
EN Falling Threshold 0.9 V 5
Hysteresis VIN voltage 500 mV 5
Soft Start 1 mS 5
Thermal Shutdown 150 ℃ 5
Thermal Hysteresis 30 ℃ 5
Junction-to-ambient thermal resistance RθJA 105 °C/W 5
Junction-to-case (top) thermal resistance RθJC(top) 55 °C/W 5
Junction-to-board thermal resistance RθJB 17.5 °C/W 5
Junction-to-top characterization parameter ψJT 3.5 °C/W 5
Junction-to-board characterization parameter ψJB 17.5 °C/W 5

CAD (KiCad official)

  • Symbol: U0058
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: u0058-etched.step / u0058-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); u0058.step / u0058.glb are the bare package body.

Provenance

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

  • Datasheet: UNI SEMIC datasheet (14 pp, sha256 d10a651071bb0d8d, retrieved 2026-10-17, 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