component
D1509-ADJ
Public Made by Adomby adom
Silicore(芯谷) DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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D1509-ADJ
Silicore(芯谷) · DC-DC Converters · SOP-8
D1509-ADJ from Silicore(芯谷), 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 | VIN | power_in | Supply voltage input for the regulator (operating range 4.5V to 40V, 42V absolute maximum) that needs a suitable input bypass capacitor to minimize voltage transients and supply switching currents. |
| 2 | Output | output | Power switching output of the internal switch, which swings between (VIN - VSAT) and approximately -0.5V at a duty cycle of about VOUT/VIN, so its PCB copper area should be minimized to limit coupling. |
| 3 | FB | input | Output voltage feedback input that senses the regulated output to close the loop, with a 1.230V typical feedback reference on the adjustable version and a range of -0.3V to VIN. |
| 4 | SD | input | ON/OFF shutdown input where a logic level below about 1.3V turns the regulator on and above 1.3V (up to VIN) shuts it down, and it can be wired to ground if shutdown is not needed. |
| 5 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 6 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 7 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 8 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silicore(芯谷) |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Feedback Voltage (ADJ, VOUT programmed for 3V) | VFB | 1.193 | 1.23 | 1.267 | V | 4.5V≤VIN≤40V, 0.2A≤ILOAD≤2A, VOUT programmed for 3V | 5 |
| Feedback Bias Current (Adjustable version only) | IFB | 50 | 100 | nA | VFB=1.3V | 4 | |
| Oscillator Frequency | Fosc | 127 | 150 | 173 | kHz | 4 | |
| Saturation Voltage | VSAT | 1.2 | 1.5 | V | IOUT=2A, No outside circuit, VFB=0V force driver on | 4 | |
| Max. Duty Cycle (ON) | DC | 93 | 98 | % | VFB=0V force driver on | 4 | |
| Min. Duty Cycle (OFF) | 0 | % | VFB=12V force driver off | 4 | |||
| Current Limit | ICL | 3 | 4 | A | Peak current, No outside circuit, VFB=0V force driver on | 4 | |
| Output Leakage Current (Output=0) | IL | 2 | mA | No outside circuit, VFB=12V force driver off | 4 | ||
| Output Leakage Current (Output=-1) | 5 | 20 | mA | VIN=40V | 4 | ||
| Quiescent Current | IQ | 5 | 10 | mA | VFB=12V force driver off | 4 | |
| Standby Quiescent Current | ISTBY | 50 | 200 | μA | ON/OFF pin=5V, VIN=40V | 4 | |
| ON/OFF pin Logic Input Threshold Voltage Low (regulator ON) | VIL | 0.6 | V | Regulator ON | 4 | ||
| ON/OFF pin Logic Input Threshold Voltage High (regulator OFF) | VIH | 2 | V | Regulator OFF | 4 | ||
| ON/OFF pin Logic Input Current (OFF) | IH | 12 | 30 | μA | VLOGIC=5.0V (OFF) | 4 | |
| ON/OFF pin Input Current (ON) | IL | 0 | 10 | μA | VLOGIC=0.5V (ON) | 4 | |
| Thermal Resistance Junction to Case | ӨJC | 15 | C/W | Junction to case | 4 | ||
| Thermal Resistance Junction to Ambient (with copper area approx. 3 in²) | ӨJA | 70 | C/W | Junction to ambient, copper area approximately 3 in² | 4 | ||
| Supply Voltage | VIN | 42 | V | 3 | |||
| ON/OFF pin input voltage | VSD | -0.3 | V | Upper limit is VIN | 3 | ||
| Feedback pin voltage | VFB | -0.3 | V | Upper limit is VIN | 3 | ||
| Output voltage to ground | VOUT | -1 | V | 3 | |||
| Storage Temperature | Tstg | -65 | 150 | C | 3 | ||
| Operating Temperature | Topr | -40 | 125 | C | 3 | ||
| Operating Voltage | VOP | 4.5 | 40 | V | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | Internal switch. The voltage at this pin switches between (+VIN, VSAT) and approximately, 0.5V, with a duty cycle of approximately VOUT / VIN. To minimize coupling to sensitive circuitry, the PC boa | 5 |
CAD (KiCad official)
- Symbol:
D1509-ADJ - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
d1509-adj-etched.step/d1509-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);d1509-adj.step/d1509-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silicore(芯谷) datasheet (9 pp, sha256
ee9f68b97932fb09, retrieved 2026-10-18, 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).
# D1509-ADJ
**Silicore(芯谷)** · DC-DC Converters · SOP-8
D1509-ADJ from Silicore(芯谷), 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 | VIN | power_in | Supply voltage input for the regulator (operating range 4.5V to 40V, 42V absolute maximum) that needs a suitable input bypass capacitor to minimize voltage transients and supply switching currents. |
| 2 | Output | output | Power switching output of the internal switch, which swings between (VIN - VSAT) and approximately -0.5V at a duty cycle of about VOUT/VIN, so its PCB copper area should be minimized to limit coupling. |
| 3 | FB | input | Output voltage feedback input that senses the regulated output to close the loop, with a 1.230V typical feedback reference on the adjustable version and a range of -0.3V to VIN. |
| 4 | SD | input | ON/OFF shutdown input where a logic level below about 1.3V turns the regulator on and above 1.3V (up to VIN) shuts it down, and it can be wired to ground if shutdown is not needed. |
| 5 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 6 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 7 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
| 8 | GND | power_in | Circuit ground, one of four ground pins (5, 6, 7, 8) on the SOP8 package. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Silicore(芯谷) |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Feedback Voltage (ADJ, VOUT programmed for 3V) | VFB | 1.193 | 1.23 | 1.267 | V | 4.5V≤VIN≤40V, 0.2A≤ILOAD≤2A, VOUT programmed for 3V | 5 |
| Feedback Bias Current (Adjustable version only) | IFB | | 50 | 100 | nA | VFB=1.3V | 4 |
| Oscillator Frequency | Fosc | 127 | 150 | 173 | kHz | | 4 |
| Saturation Voltage | VSAT | | 1.2 | 1.5 | V | IOUT=2A, No outside circuit, VFB=0V force driver on | 4 |
| Max. Duty Cycle (ON) | DC | 93 | 98 | | % | VFB=0V force driver on | 4 |
| Min. Duty Cycle (OFF) | | 0 | | | % | VFB=12V force driver off | 4 |
| Current Limit | ICL | 3 | | 4 | A | Peak current, No outside circuit, VFB=0V force driver on | 4 |
| Output Leakage Current (Output=0) | IL | | | 2 | mA | No outside circuit, VFB=12V force driver off | 4 |
| Output Leakage Current (Output=-1) | | | 5 | 20 | mA | VIN=40V | 4 |
| Quiescent Current | IQ | | 5 | 10 | mA | VFB=12V force driver off | 4 |
| Standby Quiescent Current | ISTBY | | 50 | 200 | μA | ON/OFF pin=5V, VIN=40V | 4 |
| ON/OFF pin Logic Input Threshold Voltage Low (regulator ON) | VIL | | | 0.6 | V | Regulator ON | 4 |
| ON/OFF pin Logic Input Threshold Voltage High (regulator OFF) | VIH | 2 | | | V | Regulator OFF | 4 |
| ON/OFF pin Logic Input Current (OFF) | IH | | 12 | 30 | μA | VLOGIC=5.0V (OFF) | 4 |
| ON/OFF pin Input Current (ON) | IL | | 0 | 10 | μA | VLOGIC=0.5V (ON) | 4 |
| Thermal Resistance Junction to Case | ӨJC | | 15 | | C/W | Junction to case | 4 |
| Thermal Resistance Junction to Ambient (with copper area approx. 3 in²) | ӨJA | | 70 | | C/W | Junction to ambient, copper area approximately 3 in² | 4 |
| Supply Voltage | VIN | | | 42 | V | | 3 |
| ON/OFF pin input voltage | VSD | -0.3 | | | V | Upper limit is VIN | 3 |
| Feedback pin voltage | VFB | -0.3 | | | V | Upper limit is VIN | 3 |
| Output voltage to ground | VOUT | -1 | | | V | | 3 |
| Storage Temperature | Tstg | -65 | | 150 | C | | 3 |
| Operating Temperature | Topr | -40 | | 125 | C | | 3 |
| Operating Voltage | VOP | 4.5 | | 40 | V | | 3 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | | Internal switch. The voltage at this pin switches between (+VIN, VSAT) and approximately, 0.5V, with a duty cycle of approximately VOUT / VIN. To minimize coupling to sensitive circuitry, the PC boa | 5 |
## CAD (KiCad official)
- Symbol: `D1509-ADJ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `d1509-adj-etched.step` / `d1509-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `d1509-adj.step` / `d1509-adj.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Silicore(芯谷) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603348686168600576) (9 pp, sha256 `ee9f68b97932fb09`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/d1509-adj-datasheet.pdf)