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td1509pr-r
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Techcode Semicon TD1509PR R DC-DC Converters, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownTD1509PR R
Techcode Semicon TD1509PR R · DC-DC Converters · SOP-8
TD1509PR R from Techcode Semicon TD1509PR R, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Positive input supply for the switching regulator. Absolute max 45V; recommended operating range 3.6V to 45V. Requires a low-ESR bypass capacitor close to the pin to supply switching currents and minimize voltage transients. |
| 2 | Output | output | Internal switch output pin. Swings between (+VIN - VSAT) and approximately -0.5V with a duty cycle of approximately VOUT/VIN. Saturation voltage typically 1.2V at IOUT=3A. Connect to the external catch diode and filter inductor of the buck converter. |
| 3 | FB | input | Feedback input that senses the regulated output voltage to close the control loop. Internal reference is 1.235V; output voltage is set by VOUT = 1.235 * (R1 + R2) / R1. Feedback bias current typically 10nA (adjustable version). |
| 4 | ON/OFF | input | Logic-level shutdown input. Pulling below ~1.3V (or leaving floating) enables the regulator; pulling above ~1.3V (up to 25V max) shuts the regulator down to a standby current of typically 80uA. Active-low enable. |
| 5 | GND | power_in | Circuit ground. Pins 5-8 are all GND and should be tied together to a solid ground plane for both signal return and thermal dissipation. |
| 6 | GND | power_in | Circuit ground. Pins 5-8 are all GND and should be tied together to a solid ground plane for both signal return and thermal dissipation. |
| 7 | GND | power_in | Circuit ground. Pins 5-8 are all GND and should be tied together to a solid ground plane for both signal return and thermal dissipation. |
| 8 | GND | power_in | Circuit ground. Pins 5-8 are all GND and should be tied together to a solid ground plane for both signal return and thermal dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Techcode Semicon TD1509PR R |
| Package | SOP-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
TD1509PR RTD1509PR RDR
CAD (KiCad official)
- Symbol:
TD1509PR R - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
td1509pr-r-etched.step/td1509pr-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);td1509pr-r.step/td1509pr-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Techcode Semicon TD1509PR R datasheet (None pp, sha256
8d1cdb542e62ec93, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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