component
SS550
Public Made by Adomby adom
orisilicon AC-DC Controllers And Regulators, ESOP-8. 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
markdownSS550
orisilicon · AC-DC Controllers And Regulators · ESOP-8
SS550 from orisilicon, in a ESOP-8. 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 | HV | power_in | High-voltage power input; the datasheet gives an input range of 40VDC to 900VDC, with BV up to 1000V. |
| 2 | NC | unconnected | No connection; left floating. |
| 3 | NC | unconnected | No connection; left floating. |
| 4 | GND | power_in | Chip ground. |
| 5 | BGIN | input | 1.3V voltage input; on SS550 a resistor between REG9 and BGIN sets the REG9 output between 1.3V and 9V. |
| 6 | REG9 | power_out | 9V voltage output (typ. 9V); on SS550 it is adjustable from 1.3V to 9V through a resistor to BGIN, with an absolute maximum of 22V to GND. |
| 7 | REG18 | power_out | 18V voltage output (typ. 18V), with an absolute maximum of 22V to GND. |
| 8 | HVR | passive | High-voltage resistor output; an internal 48MΩ resistor between HV and HVR allows sensing of the high-voltage input, with an absolute maximum of 1000V to GND. |
| 9 | Epad | power_in | Exposed pad connected to chip ground for heat dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | orisilicon |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
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 HV | HV | 900 | V | 2 | |||
| Supply current (power consumption) | IQ | 15 | 20 | µA | HV = 50V | 2 | |
| 18V output current | IOUT18 | 16 | mA | HV=50V, REG18=5V | 2 | ||
| 18V output current | IOUT18 | 24 | mA | HV=50V, REG18=0V | 2 | ||
| 9V output current | IOUT9 | 20 | mA | REG18=18V | 2 | ||
| 18V line regulation | ΔVOUT18 | 2.5 | V | HV=50V to 900V, IOUT =0.5mA | 2 | ||
| 18V load regulation | ΔVOUT18 | 10 | V | HV=50V, IOUT =1uA to 10mA | 2 | ||
| 9V line regulation | ΔVOUT9 | 100 | mV | IOUT =1mA , REG18=11V to 18V | 2 | ||
| 9V load regulation | ΔVOUT9 | 200 | mV | IOUT =1uA to 20mA, REG18=18V | 2 | ||
| High-voltage resistor between HV and HVR | RHV | 48 | MΩ | R between HV and HVR | 2 | ||
| BGIN to GND resistor | Rdn | 600 | KΩ | R between BGIN and GND | 2 | ||
| BGIN to REG9 resistor | Rup | 3.6 | MΩ | R between REG9 and BGIN | 2 | ||
| HV, HVR to GND voltage | -0.3 | 1000 | V | 3 | |||
| REGB to GND voltage | -0.3 | 30 | V | 3 | |||
| REG18, REG9 to GND voltage | -0.3 | 22 | V | 3 | |||
| BGIN to GND voltage | -0.3 | 9 | V | 3 | |||
| Storage temperature range | -65 | 150 | °C | 3 | |||
| Operating junction temperature range | -40 | 125 | °C | 3 | |||
| Operating ambient temperature range | -40 | 85 | °C | 3 | |||
| Junction-to-ambient thermal resistance | θJA | 45 | °C/W | 8-Lead SOP | 3 | ||
| Junction-to-case thermal resistance | θJC | 15 | °C/W | 8-Lead SOP | 3 |
CAD (KiCad official)
- Symbol:
SS550 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
ss550-etched.step/ss550-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ss550.step/ss550.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: orisilicon datasheet (10 pp, sha256
5e95ca8aa16d2a3f, retrieved 2026-10-27, 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).