component
TD7590
Public Made by Adomby adom
Techcode Semicon DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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| README.md | 1d ago |
| td7590-etched.glb | 1d ago |
| td7590-etched.step | 1d ago |
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TD7590
Techcode Semicon · DC-DC Converters · TO-263-5
TD7590 from Techcode Semicon, in a TO-263-5. 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, which operates from 3.6V to 36V DC and should be bypassed to GND with a suitably large capacitor. |
| 2 | GND | power_in | Ground pin that must be placed outside the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into the TD7590. |
| 3 | Output | output | Power switch output (SW switch node) that supplies power to the output, switching between (VIN - VSAT) and approximately -0.5V at a duty cycle of about VOUT/VIN, so its PCB copper area should be kept minimal. |
| 4 | FB | input | Feedback pin that senses the regulated output voltage through an external resistor divider, with a feedback threshold voltage of 1.222V. |
| 5 | EN | input | Digital enable input that turns the regulator off when pulled below about 0.7V and on when pulled above 1.3V, with a maximum of 12V. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Techcode Semicon |
| Package | TO-263-5 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | -0.3 | 36 | V | 3 | ||
| Feedback Pin Voltage | VFB | -0.3 | V | 3 | |||
| Enable Pin Voltage | VEN | -0.3 | 12 | V | 3 | ||
| Switch Pin Voltage | VSW | -0.3 | V | 3 | |||
| Output Power Limited | Pout | 36 | W | 3 | |||
| Operating Junction Temperature | TJ | 150 | ºC | 3 | |||
| Storage Temperature | TSTG | -65 | 150 | ºC | 3 | ||
| Lead Temperature (Soldering) | TLEAD | 260 | ºC | Soldering, 10 sec | 3 | ||
| ESD (HBM) | 2000 | V | HBM | 3 | |||
| Input Voltage (recommended) | VIN | 3.6 | 36 | V | 4 | ||
| Operating Junction Temperature (recommended) | TJ | -40 | 125 | ºC | 4 | ||
| Operating Ambient Temperature | TA | -40 | 85 | ºC | 4 | ||
| Input voltage | VIN | 3.6 | 36 | V | 4 | ||
| Shutdown Supply Current | ISTBY | 30 | 90 | uA | VEN=0V | 4 | |
| Supply Current | ICC | 3.6 | 4 | mA | VEN=2V, VFB=1.3V | 4 | |
| Feedback Voltage | VFB | 1.185 | 1.222 | 1.26 | V | VIN = 3.6V to 23V | 4 |
| Feedback Bias Current | IFB | 0.1 | 0.5 | uA | VFB=1.3V | 4 | |
| Switch Current Limit | ILIM | 6 | 6.5 | A | 4 | ||
| Oscillator Frequency | FOSC | 200 | 240 | 280 | KHz | 4 | |
| EN Pin Threshold | VEN | 0.7 | 1.2 | 1.7 | V | 4 | |
| EN Pin Input Leakage Current (high) | IH | -0.1 | -1 | uA | VEN=2.5V | 4 | |
| EN Pin Input Leakage Current (low) | IL | -3 | -10 | uA | VEN=0.5V | 4 | |
| Max. Duty Cycle | DMAX | 100 | % | VFB=0V, ISW=0.1A | 4 | ||
| Frequency of Current Limit or Short Circuit Protection | FOSC1 | 42 | KHz | VFB=0V | 4 | ||
| Internal PMOS RDSON | RDSON | 80 | mΩ | VIN =12V, VFB=0V, VEN=12V, Iout=5A | 4 | ||
| Efficiency | η | 92 | % | VIN=12V, Vout=5V, Iout=5A | 4 | ||
| Thermal Shutdown | TOTSD | 165 | ºC | 4 | |||
| Thermal Resistance Junction to Ambient | RθJA | 23 | ºC / W | 3 | |||
| Thermal Resistance Junction to Case | RθJC | 3.5 | ºC / W | 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 | board copper area connected to this pin should | 9 |
CAD (KiCad official)
- Symbol:
TD7590 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
td7590-etched.step/td7590-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);td7590.step/td7590.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Techcode Semicon datasheet (13 pp, sha256
799509304e24c4df, retrieved 2026-11-05, 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).