component
XC9271B085QR-G
Public Made by Adomby adom
Torex Semicon DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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XC9271B085QR-G
Torex Semicon · DC-DC Converters · ESOP-8
XC9271B085QR-G from Torex Semicon, 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 | Power input for the IC, with an operating voltage range of 7V to 30V and an absolute maximum VIN pin voltage of -0.3V to +36V. |
| 2 | CE | input | Chip enable: L selects stand-by and H selects active operation, with CE 'H' voltage 2.8V to 30V and 'L' voltage up to 1V, and the pin must not be left open. |
| 3 | SYNC | input | External clock sync pin: L runs at the internal clock frequency and H with a CLK signal synchronizes to an external clock within ±25% of the free running frequency, and the pin must not be left open. |
| 4 | FB | input | Output voltage sense input referenced to a 0.8V (±2%) reference, with the output adjustable from 1.2V to 12V via external resistors and an absolute maximum pin voltage of -0.3V to +6.5V. |
| 5 | SS | passive | Soft-start adjustment pin where the soft-start time is set by an external capacitor, with an absolute maximum pin voltage of -0.3V to +6.5V. |
| 6 | GND | power_in | Ground reference for all voltages in the datasheet; the dissipation pad must be connected to this pin (No. 6). |
| 7 | BST | passive | Bootstrap pin that drives the internal Nch driver transistor, with an absolute maximum voltage of VLX+6.5V or +36V and a minimum of VLX-0.3V. |
| 8 | Lx | output | Switching output pin with a maximum Lx pin current of 4.2A and an absolute maximum voltage of -0.3V to VIN+0.3V or +36V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | ESOP-8 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| FB Voltage | VFB1 | 0.784 | 0.8 | 0.816 | V | VFB=0.816V→0.784V, VSS=6V | 9 |
| FB Voltage Temperature Characteristics | ΔVFB/(ΔTopr·VFB) | -50 | 50 | ppm/℃ | -40℃≦Topr≦105℃ | 9 | |
| Output Voltage Setting Range | VOUTSET | 1.2 | 12 | V | 9 | ||
| Operating Voltage Range | VIN | 7 | 30 | V | 9 | ||
| UVLO detect voltage | VUVLO1 | 4.3 | 4.6 | 4.9 | V | VIN=4.9V→4.3V, VFB=0.65V, VSS=6V | 9 |
| UVLO release voltage | VUVLO2 | 4.7 | 5 | 5.3 | V | VIN=4.7V→5.3V, VFB=0.65V, VSS=6V | 9 |
| Quiescent Current | Iq | 250 | 360 | μA | VIN=VCE=30V, VFB=0.95V | 9 | |
| Stand-by Current | ISTB | 0.01 | 0.1 | μA | VIN=30V, VCE=0V, VSS=0V, VSYNC=0V | 9 | |
| Oscillation Frequency | fOSC | 460 | 500 | 540 | kHz | Connected to external components, IOUT=300mA | 9 |
| External Clock Signal Duty Cycle | DSYNC | 25 | 75 | % | Connected to external components, IOUT=0mA | 9 | |
| Maximum Duty Cycle | DMAX | 83 | 85 | 88 | % | VFB=0.65V | 9 |
| Minimum Duty Cycle | DMIN | 0 | % | VFB=0.95V | 9 | ||
| PFM Switch Current | IPFM | 80 | 160 | 240 | mA | Connected to external components, IOUT=0mA | 9 |
| Current Limit | ILIM | 2.4 | 3.2 | A | VFB=0.65V, VSS=6V | 9 | |
| Short Detect Voltage | VSHORT | 0.35 | 0.4 | 0.45 | V | VFB=0.45V→0.35V, VSS=6V | 9 |
| Internal Soft-Start Time | tSS1 | 0.4 | 0.7 | 1.2 | ms | VCE=0→12V, VSS=6V, VFB=VFB1×0.9V | 9 |
| External Soft-Start Time | tSS2 | 5 | 9 | 15 | ms | VCE=0→12V, VSS=6V, VFB=VFB1×0.9V, CSS=0.01μF | 9 |
| SYNC 'H' Voltage | VSYNCH | 1.5 | 6 | V | Connected to external components, IOUT=0mA | 9 | |
| SYNC 'L' Voltage | VSYNCL | 0.4 | V | Connected to external components, IOUT=0mA | 9 | ||
| SYNC 'H' Current | ISYNCH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VSYNC=6V, VFB=0.95V | 9 |
| SYNC 'L' Current | ISYNCL | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VSYNC=0V, VFB=0.95V | 9 |
| FB 'H' Current | IFBH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=6V, VSS=6V | 9 |
| FB 'L' Current | IFBL | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=0V, VSS=6V | 9 |
| CE 'H' Voltage | VCEH | 2.8 | 30 | V | VCE=0.8V→2.8V, VFB=0.65V, VSS=6V | 9 | |
| CE 'L' Voltage | VCEL | 1 | V | VCE=2.8V→0.8V, VFB=0.65V, VSS=6V | 9 | ||
| CE 'H' Current | ICEH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=0.95V | 9 |
| CE 'L' Current | ICEL | -0.1 | 0 | 0.1 | μA | VIN=30V, VCE=0V, VFB=0.95V | 9 |
| VIN Pin Voltage | VIN | -0.3 | 36 | V | 5 | ||
| FB Pin Voltage | VFB | -0.3 | 6.5 | V | 5 | ||
| SYNC Pin Voltage | VSYNC | -0.3 | 6.5 | V | 5 | ||
| CE Pin Voltage | VCE | -0.3 | 36 | V | 5 | ||
| SS Pin Voltage | VCSS | -0.3 | 6.5 | V | 5 | ||
| Lx Pin Current | ILx | 4.2 | A | 5 | |||
| Power Dissipation | Pd | 300 | mW | Ta=25℃ | 5 | ||
| Power Dissipation (40mm x 40mm standard board) | Pd | 1500 | mW | Ta=25℃, PCB mounted, reference only | 5 | ||
| Power Dissipation (JESD51-7 board) | Pd | 2500 | mW | Ta=25℃, PCB mounted, reference only | 5 | ||
| Surge Voltage | VSURGE | 46 | V | Applied Time≦400ms | 5 | ||
| Operating Ambient Temperature | Topr | -40 | 105 | ℃ | 5 | ||
| Storage Temperature | Tstg | -55 | 125 | ℃ | 5 |
CAD (KiCad official)
- Symbol:
XC9271B085QR-G - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
xc9271b085qr-g-etched.step/xc9271b085qr-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc9271b085qr-g.step/xc9271b085qr-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Torex Semicon datasheet (28 pp, sha256
0fef93816d292884, retrieved 2026-10-29, 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).
# XC9271B085QR-G
**Torex Semicon** · DC-DC Converters · ESOP-8
XC9271B085QR-G from Torex Semicon, 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 | Power input for the IC, with an operating voltage range of 7V to 30V and an absolute maximum VIN pin voltage of -0.3V to +36V. |
| 2 | CE | input | Chip enable: L selects stand-by and H selects active operation, with CE 'H' voltage 2.8V to 30V and 'L' voltage up to 1V, and the pin must not be left open. |
| 3 | SYNC | input | External clock sync pin: L runs at the internal clock frequency and H with a CLK signal synchronizes to an external clock within ±25% of the free running frequency, and the pin must not be left open. |
| 4 | FB | input | Output voltage sense input referenced to a 0.8V (±2%) reference, with the output adjustable from 1.2V to 12V via external resistors and an absolute maximum pin voltage of -0.3V to +6.5V. |
| 5 | SS | passive | Soft-start adjustment pin where the soft-start time is set by an external capacitor, with an absolute maximum pin voltage of -0.3V to +6.5V. |
| 6 | GND | power_in | Ground reference for all voltages in the datasheet; the dissipation pad must be connected to this pin (No. 6). |
| 7 | BST | passive | Bootstrap pin that drives the internal Nch driver transistor, with an absolute maximum voltage of VLX+6.5V or +36V and a minimum of VLX-0.3V. |
| 8 | Lx | output | Switching output pin with a maximum Lx pin current of 4.2A and an absolute maximum voltage of -0.3V to VIN+0.3V or +36V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | ESOP-8 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| FB Voltage | VFB1 | 0.784 | 0.8 | 0.816 | V | VFB=0.816V→0.784V, VSS=6V | 9 |
| FB Voltage Temperature Characteristics | ΔVFB/(ΔTopr·VFB) | -50 | | 50 | ppm/℃ | -40℃≦Topr≦105℃ | 9 |
| Output Voltage Setting Range | VOUTSET | 1.2 | | 12 | V | | 9 |
| Operating Voltage Range | VIN | 7 | | 30 | V | | 9 |
| UVLO detect voltage | VUVLO1 | 4.3 | 4.6 | 4.9 | V | VIN=4.9V→4.3V, VFB=0.65V, VSS=6V | 9 |
| UVLO release voltage | VUVLO2 | 4.7 | 5 | 5.3 | V | VIN=4.7V→5.3V, VFB=0.65V, VSS=6V | 9 |
| Quiescent Current | Iq | | 250 | 360 | μA | VIN=VCE=30V, VFB=0.95V | 9 |
| Stand-by Current | ISTB | | 0.01 | 0.1 | μA | VIN=30V, VCE=0V, VSS=0V, VSYNC=0V | 9 |
| Oscillation Frequency | fOSC | 460 | 500 | 540 | kHz | Connected to external components, IOUT=300mA | 9 |
| External Clock Signal Duty Cycle | DSYNC | 25 | | 75 | % | Connected to external components, IOUT=0mA | 9 |
| Maximum Duty Cycle | DMAX | 83 | 85 | 88 | % | VFB=0.65V | 9 |
| Minimum Duty Cycle | DMIN | | | 0 | % | VFB=0.95V | 9 |
| PFM Switch Current | IPFM | 80 | 160 | 240 | mA | Connected to external components, IOUT=0mA | 9 |
| Current Limit | ILIM | 2.4 | 3.2 | | A | VFB=0.65V, VSS=6V | 9 |
| Short Detect Voltage | VSHORT | 0.35 | 0.4 | 0.45 | V | VFB=0.45V→0.35V, VSS=6V | 9 |
| Internal Soft-Start Time | tSS1 | 0.4 | 0.7 | 1.2 | ms | VCE=0→12V, VSS=6V, VFB=VFB1×0.9V | 9 |
| External Soft-Start Time | tSS2 | 5 | 9 | 15 | ms | VCE=0→12V, VSS=6V, VFB=VFB1×0.9V, CSS=0.01μF | 9 |
| SYNC 'H' Voltage | VSYNCH | 1.5 | | 6 | V | Connected to external components, IOUT=0mA | 9 |
| SYNC 'L' Voltage | VSYNCL | | | 0.4 | V | Connected to external components, IOUT=0mA | 9 |
| SYNC 'H' Current | ISYNCH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VSYNC=6V, VFB=0.95V | 9 |
| SYNC 'L' Current | ISYNCL | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VSYNC=0V, VFB=0.95V | 9 |
| FB 'H' Current | IFBH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=6V, VSS=6V | 9 |
| FB 'L' Current | IFBL | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=0V, VSS=6V | 9 |
| CE 'H' Voltage | VCEH | 2.8 | | 30 | V | VCE=0.8V→2.8V, VFB=0.65V, VSS=6V | 9 |
| CE 'L' Voltage | VCEL | | | 1 | V | VCE=2.8V→0.8V, VFB=0.65V, VSS=6V | 9 |
| CE 'H' Current | ICEH | -0.1 | 0 | 0.1 | μA | VIN=VCE=30V, VFB=0.95V | 9 |
| CE 'L' Current | ICEL | -0.1 | 0 | 0.1 | μA | VIN=30V, VCE=0V, VFB=0.95V | 9 |
| VIN Pin Voltage | VIN | -0.3 | | 36 | V | | 5 |
| FB Pin Voltage | VFB | -0.3 | | 6.5 | V | | 5 |
| SYNC Pin Voltage | VSYNC | -0.3 | | 6.5 | V | | 5 |
| CE Pin Voltage | VCE | -0.3 | | 36 | V | | 5 |
| SS Pin Voltage | VCSS | -0.3 | | 6.5 | V | | 5 |
| Lx Pin Current | ILx | | | 4.2 | A | | 5 |
| Power Dissipation | Pd | | | 300 | mW | Ta=25℃ | 5 |
| Power Dissipation (40mm x 40mm standard board) | Pd | | | 1500 | mW | Ta=25℃, PCB mounted, reference only | 5 |
| Power Dissipation (JESD51-7 board) | Pd | | | 2500 | mW | Ta=25℃, PCB mounted, reference only | 5 |
| Surge Voltage | VSURGE | | | 46 | V | Applied Time≦400ms | 5 |
| Operating Ambient Temperature | Topr | -40 | | 105 | ℃ | | 5 |
| Storage Temperature | Tstg | -55 | | 125 | ℃ | | 5 |
## CAD (KiCad official)
- Symbol: `XC9271B085QR-G`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `xc9271b085qr-g-etched.step` / `xc9271b085qr-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xc9271b085qr-g.step` / `xc9271b085qr-g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Torex Semicon datasheet](docs/xc9271b085qr-g-datasheet.pdf) (28 pp, sha256 `0fef93816d292884`, retrieved 2026-10-29, tier: lcsc)
- **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/xc9271b085qr-g-datasheet.pdf)