component
U3220
Public Made by Adomby adom
UNI SEMIC DC-DC Converters, SOP-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 16d ago |
| viewers | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
| u3220-etched.glb | 16d ago |
| u3220-etched.step | 16d ago |
| u3220-hero.glb | 16d ago |
| u3220-hero.overlay.json | 16d ago |
| u3220.glb | 16d ago |
| u3220.kicad_mod | 16d ago |
| u3220.kicad_sym | 16d ago |
| u3220.lbr | 16d ago |
| u3220.step | 16d ago |
U3220
UNI SEMIC · DC-DC Converters · SOP-7
U3220 from UNI SEMIC, in a SOP-7. 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 | VDD | power_in | Chip supply pin that also serves as the output voltage feedback input when FB is floating; a 0.1uF SMD capacitor is recommended, VDD_ON is typically 7.5V, VDD_OVP is typically 24V, the internal clamp is 26V at 10mA, and VDD is rated to 30V maximum. |
| 2 | GND | power_in | Chip reference ground. |
| 3 | FB | input | Feedback input pin; leaving it floating selects the default 14.3V output, VFB_REF is 1.84 to 1.90V (typ 1.87V), the OVP threshold is typically 2.40V and the OLP threshold is typically 1.40V. |
| 4 | CS | output | Peak current detection pin used to sense the inductor peak current, with a typical peak current threshold VIPK of 0.3V and an abnormal over-current threshold VAOCP of 0.6V; FB and CS pin voltage is rated -0.3 to 7V. |
| 5 | Drain | power_in | Drain of the internal high-voltage power MOSFET, with a typical breakdown voltage of 120V and a Drain pin voltage rating of -0.3 to 120V. |
| 6 | Drain | power_in | Drain of the internal high-voltage power MOSFET (same node as pin 5), with a typical breakdown voltage of 120V and a Drain pin voltage rating of -0.3 to 120V. |
| 8 | HV | power_in | Internal high-voltage pin for the built-in 180V high-voltage start-up circuit, which charges the VDD capacitor from the high-voltage input during start-up. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI SEMIC |
| Package | SOP-7 |
| Category | Power Management (PMIC) |
| Pins | 7 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain 管脚电压 | -0.3 | 120 | V | 6 | |||
| VDD 供电电压 | 30 | V | 6 | ||||
| VDD 箝位电流 | 10 | mA | 6 | ||||
| FB ，CS 管脚电压 | -0.3 | 7 | V | 6 | |||
| 封装热阻---结到环境 | 165 | °C/W | 6 | ||||
| 最高芯片工作结温 | 160 | °C | 6 | ||||
| 储藏温度 | -65 | 150 | °C | 6 | |||
| 管脚温度 (焊接 10 秒) | 260 | °C | 焊接 10 秒 | 6 | |||
| ESD 能力 (人体模型) | 3 | KV | 人体模型 | 6 | |||
| ESD 能力 (机器模型) | 250 | V | 机器模型 | 6 | |||
| 工作环境温度 | -40 | 125 | °C | 6 | |||
| HV 脚供电电流 | IHV | 1 | 4 | mA | HV=90V, VDD=0V | 6 | |
| VDD 启动电流 | IVDD_st | 100 | 300 | uA | 无开关工作 | 6 | |
| 内部差分放大器输入端基准 | VFB_REF | 1.84 | 1.87 | 1.9 | V | 7 |
CAD (KiCad official)
- Symbol:
U3220 - Footprint:
Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm - 3D model: SOP-7 (KiCad packages3D, STEP)
- 3D model files:
u3220-etched.step/u3220-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u3220.step/u3220.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI SEMIC datasheet (12 pp, sha256
ab104bb8c5f2403f, retrieved 2026-10-17, 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).