component
U3500C
Public Made by Adomby adom
UNI-SEMIC(宇力半导体) DC-DC Converters, 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
markdownU3500C
UNI-SEMIC(宇力半导体) · DC-DC Converters · ESOP-8
U3500C from UNI-SEMIC(宇力半导体), 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 | VIN | power_in | Input supply: VIN supplies power to all internal control circuitry, with an absolute maximum pin voltage of 200 V (range -0.3 to 200 V). |
| 2 | EN | input | Enable input: pull EN below the specified threshold (VENL max 1 V) or leave it floating to shut down the U3500C, and pull it above the threshold (VENH min 2.4 V) to enable it; EN absolute maximum is 7 V. |
| 3 | FB | input | Feedback input to the voltage hysteretic comparators, with a feedback threshold VFBH of 1.25 V min, 1.3 V typ, and an absolute maximum voltage of 7 V. |
| 4 | GND | power_in | Internal ground connection, which the datasheet states can be left suspended. |
| 5 | VB | power_out | Positive supply for the internal floating high-side MOSFET driver; a bypass capacitor is connected between VB and VS, with a VB supply voltage rating of 200+20 V. |
| 6 | SW | output | Switch node output that drives the external power MOSFET, with a pin voltage range of -0.3 to 200 V. |
| 7 | VS | power_in | Switch source, serving as the low-potential reference for the upper gate drive, with a pin voltage range of -0.3 to 200 V. |
| 8 | IS | input | Current sensing input for peak current detection, with a peak current threshold VIS of 250 mV typical. |
| 9 | EP-GND | power_in | Ground exposed pad, which should be connected to the GND plane for optimal thermal performance and placed close to the output capacitor to avoid high-current switch paths. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI-SEMIC(宇力半导体) |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN, SW, VS, IS pin voltage range | -0.3 | 200 | V | 4 | |||
| VB supply voltage | 200 | V | Printed as '200+20' V; the +20 term is not separately given and was not added | 4 | |||
| FB, EN voltage range | -0.3 | 7 | V | 4 | |||
| Package thermal resistance, junction to ambient (ESOP-8) | 165 | °C/W | Junction to ambient, ESOP-8 | 4 | |||
| Maximum junction temperature | 160 | °C | 4 | ||||
| Storage temperature range | -65 | 150 | °C | 4 | |||
| Lead temperature (soldering) | 260 | °C | Soldering, 10 sec | 4 | |||
| ESD capability, HBM (Human Body Model) | 2 | kV | Human Body Model | 4 | |||
| ESD capability, MM (Machine Model) | 200 | V | Machine Model | 4 | |||
| Output voltage (ordering information) | VOUT | 2 | V | Ordering Information table: Vo '>2V' | 3 | ||
| Load current (ordering information) | Io | 10 | A | Ordering Information table: Load Current 'Io<=10A' | 3 | ||
| Input voltage max (ordering information) | VIN | 200 | V | Ordering Information table: VIN MAX 200V | 3 | ||
| Leakage current | ISWLK | 0.02 | 1.5 | µA | VEN = 0V, VSW = 0V | 5 | |
| EN on threshold | VENH | 2.4 | 7 | V | 5 | ||
| EN off threshold | VENL | 1 | V | 5 | |||
| Feedback voltage threshold | VFBH | 1.25 | 1.3 | V | 5 |
CAD (KiCad official)
- Symbol:
U3500C - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
u3500c-etched.step/u3500c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u3500c.step/u3500c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI-SEMIC(宇力半导体) datasheet (13 pp, sha256
357b1dd967f4ca00, retrieved 2026-11-03, tier: lcsc) - 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).