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DK5320
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Shenzhen DongKe Semicon AC-DC Controllers & Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DK5320
Shenzhen DongKe Semicon · AC-DC Controllers & Regulators · SOP-8
DK5320 from Shenzhen DongKe Semicon, 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 | VCC | power_in | Supply pin for the controller, with steady operating voltage of 5 V (5.2 V typ, 5.4 V max), turn-on at 3.5 V rising and turn-off at 2.8 V falling, and an internal clamp of 6.0 V at 2 mA. |
| 2 | GND | power_in | Ground pin; the VCC bypass capacitor must sit close to the VCC and GND pins, and the trace between GND and the output inductor should be short and wide to limit EMI. |
| 3 | NC | unconnected | Floating pin with no internal connection, left unconnected on the board. |
| 4 | CS | input | Current-sense input: the external sampling resistor on CS sets the peak switch current, with an internal detection threshold of 400 mV and 250 ns leading-edge blanking. |
| 5 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 6 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 7 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 8 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen DongKe Semicon |
| Package | SOP-8 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Steady-state VCC operating voltage | VCC | 5 | 5.2 | 5.4 | V | 3 | |
| Maximum switching frequency (center value) | FOSC_MAX | 30 | 35 | 40 | kHz | 频率中心值 | 3 |
| VCC operating current | IOP | 200 | 300 | uA | VCC=5.2V | 3 | |
| Storage temperature range | TSTG | -55 | 155 | ℃ | 3 | ||
| Power tube drain-source voltage | VDRAIN_MAX | 650 | 700 | V | 3 | ||
| VDD supply voltage | VDD | 7 | V | 3 | |||
| IDD supply current | IDD | 10 | mA | 3 | |||
| Junction temperature | TJ | 150 | ℃ | 3 | |||
| Soldering temperature | TW | 280 | ℃ | 5S | 3 | ||
| ESD rating | 2000 | V | 3 |
CAD (KiCad official)
- Symbol:
DK5320 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
dk5320-etched.step/dk5320-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dk5320.step/dk5320.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen DongKe Semicon datasheet (9 pp, sha256
92c5ffb2e96ad302, retrieved 2026-10-29, 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).
# DK5320
**Shenzhen DongKe Semicon** · AC-DC Controllers & Regulators · SOP-8
DK5320 from Shenzhen DongKe Semicon, 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 | VCC | power_in | Supply pin for the controller, with steady operating voltage of 5 V (5.2 V typ, 5.4 V max), turn-on at 3.5 V rising and turn-off at 2.8 V falling, and an internal clamp of 6.0 V at 2 mA. |
| 2 | GND | power_in | Ground pin; the VCC bypass capacitor must sit close to the VCC and GND pins, and the trace between GND and the output inductor should be short and wide to limit EMI. |
| 3 | NC | unconnected | Floating pin with no internal connection, left unconnected on the board. |
| 4 | CS | input | Current-sense input: the external sampling resistor on CS sets the peak switch current, with an internal detection threshold of 400 mV and 250 ns leading-edge blanking. |
| 5 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 6 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 7 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
| 8 | DRAIN | passive | Drain of the internal 650 V high-voltage power MOSFET (BVDSS 650 V), which also supplies start-up current to VCC; a larger copper area improves heat dissipation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen DongKe Semicon |
| Package | SOP-8 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Steady-state VCC operating voltage | VCC | 5 | 5.2 | 5.4 | V | | 3 |
| Maximum switching frequency (center value) | FOSC_MAX | 30 | 35 | 40 | kHz | 频率中心值 | 3 |
| VCC operating current | IOP | | 200 | 300 | uA | VCC=5.2V | 3 |
| Storage temperature range | TSTG | -55 | | 155 | ℃ | | 3 |
| Power tube drain-source voltage | VDRAIN_MAX | | 650 | 700 | V | | 3 |
| VDD supply voltage | VDD | | | 7 | V | | 3 |
| IDD supply current | IDD | | | 10 | mA | | 3 |
| Junction temperature | TJ | | | 150 | ℃ | | 3 |
| Soldering temperature | TW | | | 280 | ℃ | 5S | 3 |
| ESD rating | | | | 2000 | V | | 3 |
## CAD (KiCad official)
- Symbol: `DK5320`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `dk5320-etched.step` / `dk5320-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dk5320.step` / `dk5320.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shenzhen DongKe Semicon datasheet](docs/dk5320-datasheet.pdf) (9 pp, sha256 `92c5ffb2e96ad302`, retrieved 2026-10-29, 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`, 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/dk5320-datasheet.pdf)