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SK6627
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Suntek DC-DC Converters, SOT-563. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SK6627
Suntek · DC-DC Converters · SOT-563
SK6627 from Suntek, in a SOT-563. 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 | IN | power_in | Power supply pin with a 4.5 V to 17 V operating input range and an absolute maximum VIN of -0.3 V to 19 V. |
| 2 | SW | output | Switching pin connecting the internal power MOSFETs to the inductor, with an absolute maximum of -0.3 V to VIN+1 V (-5 V to VIN+2 V for 10 ns transients). |
| 3 | GND | power_in | Ground pin for the device. |
| 4 | BS | power_out | Bootstrap pin; a capacitor connected between SW and BS forms the floating supply for the high-side switch driver, with an absolute maximum of -0.3 V to VSW+5 V. |
| 5 | EN | input | Enable pin: drive to logic-high (rising threshold 1.4 V) to enable the IC and to logic-low (falling threshold 0.8 V) to disable it into micro-power shutdown, with an absolute maximum of -0.3 V to 19 V. |
| 6 | FB | input | Adjustable-version feedback input, connected to the center point of the external resistor divider, with a 0.805 V typical reference and an absolute maximum of -0.3 V to 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Suntek |
| Package | SOT-563 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating junction temperature | -40 | 125 | °C | 3 | |||
| Operating temperature range | -40 | 85 | °C | 3 | |||
| Input voltage | VIN | 4.5 | 17 | V | 3 | ||
| Output current | 0 | 2 | A | 3 | |||
| VIN, EN voltage | -0.3 | 19 | V | 3 | |||
| SW voltage | -0.3 | V | 3 | ||||
| SW voltage (10 ns transient) | -5 | V | 10 ns transient | 3 | |||
| BS voltage | -0.3 | V | 3 | ||||
| FB voltage | -0.3 | 6 | V | 3 | |||
| Operating junction temperature | TJ | -40 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -55 | 150 | °C | 3 | ||
| Lead temperature (soldering) | 260 | °C | Soldering, 10 sec | 3 | |||
| Input voltage range | 4.5 | 17 | V | 4 | |||
| Supply current (quiescent) | 0.6 | 0.8 | mA | VEN =3.0V | 4 | ||
| Feedback voltage | 0.784 | 0.805 | 0.825 | V | 4 | ||
| Under-voltage lockout threshold, wake up VIN voltage | 4.3 | 4.5 | V | 4 | |||
| Under-voltage lockout threshold, shutdown VIN voltage | 3.6 | 3.8 | V | 4 | |||
| Supply current (shutdown) | 4 | uA | VEN =0 or EN = GND | 4 | |||
| High-side switch on-resistance | 100 | mΩ | ISW=100mA | 4 | |||
| Low-side switch on-resistance | 50 | mΩ | ISW=-100mA | 4 | |||
| Valley switch current limit | 3 | A | 4 | ||||
| Over voltage protection threshold | 19 | V | 4 | ||||
| Switching frequency | 800 | KHz | 4 | ||||
| Maximum duty cycle | 94 | % | VFB=90% | 4 | |||
| Minimum off-time | 89 | nS | 4 | ||||
| EN rising threshold | 1.4 | V | 4 | ||||
| EN falling threshold | 0.8 | V | 4 | ||||
| Hysteresis VIN voltage | 500 | mV | 4 | ||||
| Soft start | 1.5 | mS | 4 | ||||
| Thermal shutdown | 160 | ℃ | 4 | ||||
| Thermal hysteresis | 30 | ℃ | 4 | ||||
| Junction-to-ambient thermal resistance | RθJA | 155 | °C/W | JESD 51-7, 4-layer JEDEC board | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 55 | °C/W | 4 | |||
| Junction-to-board thermal resistance | RθJB | 30 | °C/W | 4 | |||
| Junction-to-top characterization parameter | ψJT | 2.5 | °C/W | 4 | |||
| Junction-to-board characterization parameter | ψJB | 31 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
SK6627 - Footprint:
Package_TO_SOT_SMD:SOT-563 - 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files:
sk6627-etched.step/sk6627-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sk6627.step/sk6627.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Suntek datasheet (13 pp, sha256
d1d4f912a6b37dba, retrieved 2026-10-18, 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).
# SK6627
**Suntek** · DC-DC Converters · SOT-563
SK6627 from Suntek, in a SOT-563. 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 | IN | power_in | Power supply pin with a 4.5 V to 17 V operating input range and an absolute maximum VIN of -0.3 V to 19 V. |
| 2 | SW | output | Switching pin connecting the internal power MOSFETs to the inductor, with an absolute maximum of -0.3 V to VIN+1 V (-5 V to VIN+2 V for 10 ns transients). |
| 3 | GND | power_in | Ground pin for the device. |
| 4 | BS | power_out | Bootstrap pin; a capacitor connected between SW and BS forms the floating supply for the high-side switch driver, with an absolute maximum of -0.3 V to VSW+5 V. |
| 5 | EN | input | Enable pin: drive to logic-high (rising threshold 1.4 V) to enable the IC and to logic-low (falling threshold 0.8 V) to disable it into micro-power shutdown, with an absolute maximum of -0.3 V to 19 V. |
| 6 | FB | input | Adjustable-version feedback input, connected to the center point of the external resistor divider, with a 0.805 V typical reference and an absolute maximum of -0.3 V to 6 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Suntek |
| Package | SOT-563 |
| Category | Power Management (PMIC) |
| Pins | 6 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating junction temperature | | -40 | | 125 | °C | | 3 |
| Operating temperature range | | -40 | | 85 | °C | | 3 |
| Input voltage | VIN | 4.5 | | 17 | V | | 3 |
| Output current | | 0 | | 2 | A | | 3 |
| VIN, EN voltage | | -0.3 | | 19 | V | | 3 |
| SW voltage | | -0.3 | | | V | | 3 |
| SW voltage (10 ns transient) | | -5 | | | V | 10 ns transient | 3 |
| BS voltage | | -0.3 | | | V | | 3 |
| FB voltage | | -0.3 | | 6 | V | | 3 |
| Operating junction temperature | TJ | -40 | | 150 | °C | | 3 |
| Storage temperature | Tstg | -55 | | 150 | °C | | 3 |
| Lead temperature (soldering) | | | | 260 | °C | Soldering, 10 sec | 3 |
| Input voltage range | | 4.5 | | 17 | V | | 4 |
| Supply current (quiescent) | | | 0.6 | 0.8 | mA | VEN =3.0V | 4 |
| Feedback voltage | | 0.784 | 0.805 | 0.825 | V | | 4 |
| Under-voltage lockout threshold, wake up VIN voltage | | 4.3 | | 4.5 | V | | 4 |
| Under-voltage lockout threshold, shutdown VIN voltage | | 3.6 | | 3.8 | V | | 4 |
| Supply current (shutdown) | | | 4 | | uA | VEN =0 or EN = GND | 4 |
| High-side switch on-resistance | | | 100 | | mΩ | ISW=100mA | 4 |
| Low-side switch on-resistance | | | 50 | | mΩ | ISW=-100mA | 4 |
| Valley switch current limit | | | 3 | | A | | 4 |
| Over voltage protection threshold | | | 19 | | V | | 4 |
| Switching frequency | | | 800 | | KHz | | 4 |
| Maximum duty cycle | | | 94 | | % | VFB=90% | 4 |
| Minimum off-time | | | 89 | | nS | | 4 |
| EN rising threshold | | | 1.4 | | V | | 4 |
| EN falling threshold | | | 0.8 | | V | | 4 |
| Hysteresis VIN voltage | | | 500 | | mV | | 4 |
| Soft start | | | 1.5 | | mS | | 4 |
| Thermal shutdown | | | 160 | | ℃ | | 4 |
| Thermal hysteresis | | | 30 | | ℃ | | 4 |
| Junction-to-ambient thermal resistance | RθJA | | 155 | | °C/W | JESD 51-7, 4-layer JEDEC board | 4 |
| Junction-to-case (top) thermal resistance | RθJC(top) | | 55 | | °C/W | | 4 |
| Junction-to-board thermal resistance | RθJB | | 30 | | °C/W | | 4 |
| Junction-to-top characterization parameter | ψJT | | 2.5 | | °C/W | | 4 |
| Junction-to-board characterization parameter | ψJB | | 31 | | °C/W | | 4 |
## CAD (KiCad official)
- Symbol: `SK6627`
- Footprint: `Package_TO_SOT_SMD:SOT-563`
- 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files: `sk6627-etched.step` / `sk6627-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk6627.step` / `sk6627.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Suntek datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590269020575465472) (13 pp, sha256 `d1d4f912a6b37dba`, retrieved 2026-10-18, 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/sk6627-datasheet.pdf)