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RS7550-1YE3

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Jiangsu RUNIC Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RS7550-1YE3

Jiangsu RUNIC Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L

RS7550-1YE3 from Jiangsu RUNIC Tech, in a SOT-89-3L. 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 VOUT power_out Regulated output pin for the 5.0 V LDO output, rated up to 150 mA, with an output capacitor greater than 1 µF required from VOUT to GND.
2 GND power_in Ground reference pin to which all voltage parameters are referenced, and a larger GND copper area on the PCB improves heat dissipation.
3 VIN power_in Input supply pin with a recommended range of 2.5 V to 36 V (absolute maximum -0.3 V to 40 V), with an input capacitor greater than 1 µF placed close to the pin.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-89-3L
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage accuracy -2 0 2 % IOUT = 10mA, +25°C 5
Maximum output current 100 150 mA +25°C 5
Input voltage range VIN 36 V VOUT = 5.0V, +25°C 5
Quiescent current (static power consumption) 2 3 μA No load, +25°C 5
Load regulation ΔVOUT 25 60 mV VIN = VOUT+2V, IOUT = 1mA to 50mA, +25°C 5
Line regulation ΔVOUT/ΔVIN×VOUT 0.05 0.2 %/V VIN = VOUT + 2V to 36V, IOUT = 1mA, +25°C 5
Input voltage (absolute maximum) VIN -0.3 40 V 3
Junction temperature (PN junction) TJ -40 150 °C 3
Storage temperature range Tstg -65 150 °C 3
ESD human-body model V(ESD) -4000 4000 V Human-body model (HBM) 3
ESD machine model V(ESD) -100 100 V Machine model (MM) 3
Input voltage range (recommended) VIN 2.5 36 V 3
Output load current (recommended) IOUT 0 150 mA 3
Ambient operating temperature TA -40 85 °C 3
Dropout voltage VDROP 440 mV IOUT = 100mA, ΔVo = 2%, +25°C 5
Power supply ripple rejection at 217Hz PSRR 58 dB VOUT = 5.0V, IOUT = 10mA, f = 217Hz, +25°C 5
Power supply ripple rejection at 1kHz PSRR 40 dB VOUT = 5.0V, IOUT = 10mA, f = 1KHz, +25°C 5
Output voltage temperature coefficient ΔVOUT/ΔTA×VOUT 100 ppm/°C IOUT = 1mA, Full = -40°C to +85°C 5
Overtemperature protection temperature TSHDN 150 °C 5
Junction-to-ambient thermal resistance (SOT89-3L) RθJA 75 °C/W 3
Junction-to-case (top) thermal resistance (SOT89-3L) RθJC(top) 88.1 °C/W 3
Junction-to-board thermal resistance (SOT89-3L) RθJB 9.6 °C/W 3
Junction-to-top characterization parameter (SOT89-3L) ψJT 6.2 °C/W 3
Junction-to-board characterization parameter (SOT89-3L) ψJB 9.7 °C/W 3
Junction-to-case (bottom) thermal resistance (SOT89-3L) RJC(bot) 7.7 °C/W 3

CAD (KiCad official)

  • Symbol: RS7550-1YE3
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: rs7550-1ye3-etched.step / rs7550-1ye3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs7550-1ye3.step / rs7550-1ye3.glb are the bare package body.

Provenance

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

  • Datasheet: Jiangsu RUNIC Tech datasheet (10 pp, sha256 4739d9b3040b4bd5, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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