component
U3210
Public Made by Adomby adom
UNI SEMIC DC-DC Converters, SOP-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
markdownU3210
UNI SEMIC · DC-DC Converters · SOP-8
U3210 from UNI SEMIC, in a SOP-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 | VDD | power_in | Chip supply pin, also used as the output-voltage feedback input when FB is left floating; the datasheet recommends a 100nF SMD capacitor, VDD_ON is 7.5V typ, VDD_OFF 7.0V typ, VDD_OVP 25V typ, and VDD is clamped at 27V typ at 10mA, with an absolute maximum VDD supply of 25V. |
| 2 | GND | power_in | Reference ground for the chip. |
| 3 | FB | input | Feedback input; when left floating the output defaults to 12V, the reference is 2.0V typ, the output overvoltage threshold is 2.4V typ and the overload threshold VFB_OLP is 1.87V typ, with an absolute FB/CS voltage range of -0.3 to 7V. |
| 4 | CS | output | Peak current sense pin, where the cycle-by-cycle peak current threshold is 0.55V typ (0.50 to 0.60V) and the abnormal overcurrent threshold is 0.9V typ, with an absolute FB/CS voltage range of -0.3 to 7V. |
| 5 | Drain | power_in | Drain of the internal high-voltage power MOSFET, rated for a 650V minimum breakdown voltage and an absolute maximum drain voltage of -0.3 to 650V, with typical Rdson of 10 Ω. |
| 6 | Drain | power_in | Drain of the internal high-voltage power MOSFET, rated for a 650V minimum breakdown voltage and an absolute maximum drain voltage of -0.3 to 650V, with typical Rdson of 10 Ω. |
| 7 | Drain | power_in | Drain of the internal high-voltage power MOSFET, rated for a 650V minimum breakdown voltage and an absolute maximum drain voltage of -0.3 to 650V, with typical Rdson of 10 Ω. |
| 8 | Drain | power_in | Drain of the internal high-voltage power MOSFET, rated for a 650V minimum breakdown voltage and an absolute maximum drain voltage of -0.3 to 650V, with typical Rdson of 10 Ω. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI SEMIC |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
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 (IHV) | IHV | 1 | 5 | mA | HV=650V, VDD=0V | 5 | |
| VDD start-up current | IVDD_st | 100 | 300 | uA | 无开关工作 | 5 | |
| Internal reference voltage at FB (differential amplifier input) | VFB_REF | 1.97 | 2 | 2.03 | V | 6 | |
| Peak current threshold | VIPK | 0.5 | 0.55 | 0.6 | V | 6 | |
| Power MOSFET breakdown voltage | VBR | 650 | V | 6 | |||
| Drain pin voltage | -0.3 | 650 | V | 5 | |||
| VDD supply voltage | VDD | 25 | V | 5 | |||
| VDD clamp current | 10 | mA | 5 | ||||
| FB, CS pin voltage | -0.3 | 7 | V | 5 | |||
| Maximum junction operating temperature | 160 | °C | 5 | ||||
| Storage temperature | -65 | 150 | °C | 5 | |||
| Pin temperature (soldering, 10 s) | 260 | °C | 焊接 10 秒 | 5 | |||
| ESD capability (human body model) | 3 | KV | 人体模型 | 5 | |||
| ESD capability (machine model) | 250 | V | 机器模型 | 5 | |||
| Package thermal resistance, junction to ambient (SOP-8) | 165 | °C/W | 结到环境(SOP-8) | 5 | |||
| Operating ambient temperature | -40 | 125 | °C | 5 | |||
| Switching frequency | 40 | 60 | kHz | 5 |
CAD (KiCad official)
- Symbol:
U3210 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
u3210-etched.step/u3210-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u3210.step/u3210.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI SEMIC datasheet (10 pp, sha256
1dbd5e6205e22cb9, 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).