component
RS7550-1YE3
Public Made by Adomby adom
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.
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
markdownRS7550-1YE3
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rs7550-1ye3.step/rs7550-1ye3.glbare 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, 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).