component
D1509-5.0
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.
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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Contents
README
markdownD1509-5.0
Silicore(芯谷) · DC-DC Converters · SOP-8
D1509-5.0 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, operating range 4.5V to 40V (absolute maximum 42V), needing a bypass capacitor to minimize voltage transients and supply switching currents. |
| 2 | Output | output | Power switching output whose voltage switches between (VIN - VSAT) and approximately -0.5V, with PC board copper area kept minimal to limit coupling. |
| 3 | FB | input | Output voltage feedback control input that senses the regulated output voltage to complete the feedback loop. |
| 4 | SD | input | ON/OFF shutdown input where 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 unused. |
| 5 | GND | power_in | Ground. |
| 6 | GND | power_in | Ground. |
| 7 | GND | power_in | Ground. |
| 8 | GND | power_in | Ground. |
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 Voltage (D1509-5.0) | VOUT | 4.8 | 5 | 5.2 | V | 7V<VIN<40V; 0.2A≤ILOAD≤2A | 4 |
| Oscillator Frequency | Fosc | 127 | 150 | 173 | kHz | 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 | |||
| Saturation Voltage | VSAT | 1.2 | 1.5 | V | IOUT=2A, No outside circuit; VFB=0V force driver on | 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 | Low (regulator ON) | 4 | ||
| ON/OFF pin Logic Input Threshold Voltage, High (regulator OFF) | VIH | 2 | V | High (regulator OFF) | 4 | ||
| ON/OFF pin Logic Input Current | IH | 12 | 30 | μA | VLOGIC=5.0V (OFF) | 4 | |
| ON/OFF pin Input Current | 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 | ӨJA | 70 | C/W | With copper area of approximately 3 in2 | 4 | ||
| Supply Voltage | VIN | 42 | V | 3 | |||
| ON/OFF pin input voltage | VSD | -0.3 | V | Upper limit printed as VIN | 3 | ||
| Feedback pin voltage | VFB | -0.3 | V | Upper limit printed as 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:
D1509-5.0 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
d1509-5-0-etched.step/d1509-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);d1509-5-0.step/d1509-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Silicore(芯谷) datasheet (9 pp, sha256
713987f7a9a27c26, retrieved 2026-10-20, 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).