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U3315
Public Made by Adomby adom
UNI-SEMI Gate Drive ICs, TSSOP-20. 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
markdownU3315
UNI-SEMI · Gate Drive ICs · TSSOP-20
U3315 from UNI-SEMI, in a TSSOP-20. 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 | HIN1 | input | Logic input for high side gate driver output HO1, in phase; 3.3 V logic compatible, internal ~200k pull-down, minimum recommended pulse width 300 ns. |
| 2 | HIN2 | input | Logic input for high side gate driver output HO2, in phase; 3.3 V logic compatible, internal ~200k pull-down, minimum recommended pulse width 300 ns. |
| 3 | HIN3 | input | Logic input for high side gate driver output HO3, in phase; 3.3 V logic compatible, internal ~200k pull-down, minimum recommended pulse width 300 ns. |
| 4 | LIN1 | input | Active-low (overbar) logic input for low side gate driver output LO1, out of phase for U3315; 3.3 V logic compatible. |
| 5 | LIN2 | input | Active-low (overbar) logic input for low side gate driver output LO2, out of phase for U3315; 3.3 V logic compatible. |
| 6 | LIN3 | input | Active-low (overbar) logic input for low side gate driver output LO3, out of phase for U3315; 3.3 V logic compatible. |
| 7 | VCC | power_in | Low side and logic fixed supply, recommended 4.5 V to 20 V (absolute max 25 V), with UVLO. |
| 8 | COM | power_in | Logic ground, reference for all voltages. |
| 9 | LO3 | output | Low side gate driver output 3 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 10 | LO2 | output | Low side gate driver output 2 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 11 | LO1 | output | Low side gate driver output 1 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 12 | VS3 | passive | High voltage floating supply return for phase 3; offset operating range -6 V to 260 V. |
| 13 | HO3 | output | High side gate driver output 3 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 14 | VB3 | power_in | High side floating supply for phase 3, VS3+4.5 V to VS3+20 V (absolute max 325 V). |
| 15 | VS2 | passive | High voltage floating supply return for phase 2; offset operating range -6 V to 260 V. |
| 16 | HO2 | output | High side gate driver output 2 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 17 | VB2 | power_in | High side floating supply for phase 2, VS2+4.5 V to VS2+20 V (absolute max 325 V). |
| 18 | VS1 | passive | High voltage floating supply return for phase 1; offset operating range -6 V to 260 V. |
| 19 | HO1 | output | High side gate driver output 1 with 1.2 A source and 1.5 A sink short-circuit pulse current. |
| 20 | VB1 | power_in | High side floating supply for phase 1, VS1+4.5 V to VS1+20 V (absolute max 325 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UNI-SEMI |
| Package | TSSOP-20 |
| Category | Power Management ICs |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Quiescent VCC supply current | IQVCC1 | 210 | 330 | 450 | μA | VHIN1,2,3=VLIN1,2,3=0 or 5V, VENB=0 | 8 |
| Quiescent VCC supply current in standby mode | IQVCC2 | 46 | 80 | μA | VHIN1,2,3=VLIN1,2,3=0 or 5V, VENB=5 | 8 | |
| VCC supply under-voltage positive going threshold | VCCUV+ | 2.9 | 4.2 | 5.5 | V | 8 | |
| VCC supply under-voltage negative going threshold | VCCUV- | 2.5 | 3.8 | 5.1 | V | 8 | |
| High side VBS supply under-voltage positive going threshold | VBSUV+ | 2.5 | 3.8 | 4.5 | V | 8 | |
| High side VBS supply under-voltage negative going threshold | VBSUV- | 2.2 | 3.5 | 4.5 | V | 8 | |
| High side quiescent VBS supply current | IQBS | 25 | 45 | 65 | μA | VBS=15V | 8 |
| Offset supply leakage current | ILK | 10 | μA | VB=VS=260V VCC=0V | 8 | ||
| Logic HIGH input voltage | VIH | 2.5 | V | 8 | |||
| Logic LOW input voltage | VIL | 0.8 | V | 8 | |||
| Turn-on propagation delay | ton | 220 | 260 | ns | VHIN1,2,3 or VLIN1,2,3=5V, VS1,2,3=0 | 9 | |
| Turn-off propagation delay | toff | 110 | 140 | ns | VHIN1,2,3 or VLIN1,2,3=0, VS1,2,3=0 | 9 | |
| Dead time matching | MDT | 50 | ns | without external dead time | 9 | ||
| Delay matching | MT | 50 | ns | external dead time > 1000ns | 9 | ||
| Output pulse-width matching | PM | 50 | ns | external dead time > 1000ns, PWIN=10μs, PM=PWOUT-PWIN | 9 | ||
| High side floating supply voltage (abs max) | VB | -0.3 | 325 | V | 6 | ||
| Low side and logic fixed supply voltage (abs max) | VCC | -0.3 | 25 | V | 6 | ||
| Allowable offset voltage slew rate | dV/dt | 50 | V/ns | 6 | |||
| Package power dissipation TSSOP20 | PD | 1.5 | W | TA ≤ +25 °C | 6 | ||
| Thermal resistance junction to ambient TSSOP20 | RthJA | 83 | °C/W | TSSOP20 | 6 | ||
| Junction temperature | TJ | 150 | °C | 6 | |||
| Storage temperature | TS | -55 | 150 | °C | 6 | ||
| Lead temperature | TL | 300 | °C | soldering, 10 seconds | 6 | ||
| Low side and logic fixed supply voltage | VCC | 4.5 | 20 | V | 7 | ||
| High side floating supply offset voltage | VS1,2,3 | -6 | 260 | V | Note1: logic operational for VS of -6V to +260V | 7 | |
| Logic input voltage (max is COM + 5) | VIN | 0 | 5 | V | COM to COM+5 | 7 | |
| Ambient temperature | TA | -40 | 125 | °C | 7 | ||
| VCC supply under-voltage lockout hysteresis | VCCHYS | 0.4 | V | 8 | |||
| Operating VCC supply current | IVCCOP | 1500 | μA | fLIN1,2,3=20KH, fHIN1,2,3=20KH | 8 | ||
| Input positive going threshold | VIN,TH+ | 1.9 | V | 8 | |||
| Input negative going threshold | VIN,TH- | 1.4 | V | 8 | |||
| High side output HIGH short-circuit pulse current | IHO+ | 1.2 | A | VHO=VS=0 | 8 | ||
| High side output LOW short-circuit pulse current | IHO- | 1.5 | A | VHO=VB=15V | 8 | ||
| Dead time | DT | 100 | ns | VHIN1,2,3 or VLIN1,2,3=0 and 5V, without external dead time | 9 |
CAD (KiCad official)
- Symbol:
U3315 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
u3315-etched.step/u3315-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);u3315.step/u3315.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UNI-SEMI datasheet (17 pp, sha256
6b8510d3d62cf0a1, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).