component
U3223E
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UNI SEMIC DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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U3223E
UNI SEMIC · DC-DC Converters · ESOP-8
U3223E from UNI SEMIC, 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 | GND | power_in | Chip reference ground pin. |
| 2 | EN | input | Driving this pin to logic high (1V) enables the IC, and driving it to logic low enables the IC into shutdown mode, per the datasheet's wording. |
| 3 | FB | input | Feedback input pin; the datasheet gives an overload protection (OLP) detection threshold of 1.8 V typical on this pin. |
| 4 | CS | input | Peak current sense pin; the sensed voltage is compared with a 0.2 V typical peak current threshold, with about 300 ns leading-edge blanking. |
| 5 | NC | unconnected | No connection; the datasheet recommends leaving this pin floating. |
| 6 | HV | power_in | Internal high-voltage pin for the 200 V high-voltage start-up circuit, which charges the VDD capacitor from the Drain. |
| 7 | Drain | power_in | Internal high-voltage MOSFET drain; the Drain pin voltage absolute maximum range is -0.3 to 200 V. |
| 8 | VDD | power_in | Chip supply pin where a 100 nF SMD capacitor is recommended; VDD absolute maximum is 25 V and the internal clamp is 30 V typical. |
| 9 | Drain | power_in | Internal high-voltage MOSFET drain on the exposed pad, which must be well soldered to the PCB. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI SEMIC |
| 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 |
|---|---|---|---|---|---|---|---|
| HV pin supply current (I_HV) | I_HV | 1 | 5 | mA | HV=180V, VDD=0V | 5 | |
| HV pin leakage current (IHV_leakage) | IHV_leakage | 50 | uA | HV=180V, VDD=12V | 5 | ||
| VDD startup current (IVDD_st) | IVDD_st | 100 | 300 | uA | 无开关工作 (no switching operation) | 5 | |
| Drain pin voltage (absolute maximum) | -0.3 | 200 | V | 4 | |||
| VDD supply voltage (absolute maximum) | 25 | V | 4 | ||||
| VDD clamp current (absolute maximum) | 10 | mA | 4 | ||||
| FB, CS, EN pin voltage (absolute maximum) | -0.3 | 7 | V | 4 | |||
| Storage temperature (absolute maximum) | -65 | 150 | °C | 4 | |||
| Lead temperature, soldering 10 s (absolute maximum) | 260 | °C | 焊接 10 秒 (soldering 10 s) | 4 | |||
| ESD capability, human body model | 3 | KV | 人体模型 (HBM) | 4 | |||
| ESD capability, machine model | 250 | V | 机器模型 (MM) | 4 | |||
| Maximum junction operating temperature (absolute maximum) | 160 | °C | 4 | ||||
| Operating ambient temperature (recommended) | -40 | 125 | °C | 4 | |||
| Switching frequency (recommended, maximum) | 120 | kHz | 4 | ||||
| Package thermal resistance, junction to ambient | 165 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
U3223E - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
u3223e-etched.step/u3223e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u3223e.step/u3223e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI SEMIC datasheet (12 pp, sha256
67ebe1d5f2c775ee, retrieved 2026-10-19, 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).
# U3223E
**UNI SEMIC** · DC-DC Converters · ESOP-8
U3223E from UNI SEMIC, 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 | GND | power_in | Chip reference ground pin. |
| 2 | EN | input | Driving this pin to logic high (1V) enables the IC, and driving it to logic low enables the IC into shutdown mode, per the datasheet's wording. |
| 3 | FB | input | Feedback input pin; the datasheet gives an overload protection (OLP) detection threshold of 1.8 V typical on this pin. |
| 4 | CS | input | Peak current sense pin; the sensed voltage is compared with a 0.2 V typical peak current threshold, with about 300 ns leading-edge blanking. |
| 5 | NC | unconnected | No connection; the datasheet recommends leaving this pin floating. |
| 6 | HV | power_in | Internal high-voltage pin for the 200 V high-voltage start-up circuit, which charges the VDD capacitor from the Drain. |
| 7 | Drain | power_in | Internal high-voltage MOSFET drain; the Drain pin voltage absolute maximum range is -0.3 to 200 V. |
| 8 | VDD | power_in | Chip supply pin where a 100 nF SMD capacitor is recommended; VDD absolute maximum is 25 V and the internal clamp is 30 V typical. |
| 9 | Drain | power_in | Internal high-voltage MOSFET drain on the exposed pad, which must be well soldered to the PCB. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI SEMIC |
| 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 |
|---|---|---|---|---|---|---|---|
| HV pin supply current (I_HV) | I_HV | 1 | 5 | | mA | HV=180V, VDD=0V | 5 |
| HV pin leakage current (IHV_leakage) | IHV_leakage | | | 50 | uA | HV=180V, VDD=12V | 5 |
| VDD startup current (IVDD_st) | IVDD_st | | 100 | 300 | uA | 无开关工作 (no switching operation) | 5 |
| Drain pin voltage (absolute maximum) | | -0.3 | | 200 | V | | 4 |
| VDD supply voltage (absolute maximum) | | | | 25 | V | | 4 |
| VDD clamp current (absolute maximum) | | | | 10 | mA | | 4 |
| FB, CS, EN pin voltage (absolute maximum) | | -0.3 | | 7 | V | | 4 |
| Storage temperature (absolute maximum) | | -65 | | 150 | °C | | 4 |
| Lead temperature, soldering 10 s (absolute maximum) | | | | 260 | °C | 焊接 10 秒 (soldering 10 s) | 4 |
| ESD capability, human body model | | | | 3 | KV | 人体模型 (HBM) | 4 |
| ESD capability, machine model | | | | 250 | V | 机器模型 (MM) | 4 |
| Maximum junction operating temperature (absolute maximum) | | | | 160 | °C | | 4 |
| Operating ambient temperature (recommended) | | -40 | | 125 | °C | | 4 |
| Switching frequency (recommended, maximum) | | | | 120 | kHz | | 4 |
| Package thermal resistance, junction to ambient | | | 165 | | °C/W | | 4 |
## CAD (KiCad official)
- Symbol: `U3223E`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `u3223e-etched.step` / `u3223e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `u3223e.step` / `u3223e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [UNI SEMIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755842615386349568) (12 pp, sha256 `67ebe1d5f2c775ee`, retrieved 2026-10-19, 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](docs/u3223e-datasheet.pdf)