component

TD1484AMR

Public Made by Adom

by adom

Techcode Semicon DC-DC Converters, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs td1484amr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json td1484amr: specified limits as data (metadata.characteristics, 21 rows from the datasheet) · Ray
README.md td1484amr: specified limits as data (metadata.characteristics, 21 rows from the datasheet) · Ray
td1484amr-etched.fit.json td1484amr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
td1484amr-etched.glb td1484amr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
td1484amr-etched.step td1484amr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
td1484amr.glb fix footprint: SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm -> SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm (3d refresh; body… · Ray
td1484amr.kicad_mod fix footprint: SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm -> SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm (ep_dropped, 8 pins… · Ray
td1484amr.kicad_sym Publish 0.1.0 · Ray
td1484amr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
td1484amr.step fix footprint: SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm -> SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm (3d refresh; body… · Ray

TD1484AMR

Techcode Semicon · DC-DC Converters · SOIC-8-EP

TD1484AMR from Techcode Semicon, in a SOIC-8-EP. 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 BS passive High-Side Gate Drive Boost Input. Supplies drive voltage for the high-side N-channel MOSFET. Connect a 0.01µF or greater bootstrap capacitor from SW to BS to power the high-side switch.
2 IN power_in Supply Voltage input. Operates from +4.75V to +20V unregulated input. An input decoupling capacitor (C1) is required at this pin to prevent large voltage spikes.
3 SW power_out Power Switching Output. The switching node that supplies power to the output. Connect the output LC filter from SW to the load; also ties to the bootstrap capacitor for the high-side switch.
4 GND power_in Device ground. Also connected internally to the exposed pad, which serves as a thermal radiator and must be soldered to the PCB ground plane.
5 FB input Feedback Input. Senses the output voltage via a resistive divider to regulate the output. Feedback threshold is 0.923V (typ).
6 COMP passive Compensation Node for the regulation control loop. Connect a series RC network from COMP to GND to compensate the loop; an additional shunt capacitor from COMP to GND may be required.
7 EN input Enable Input. Digital input that turns the regulator on (high) or off (low). Threshold ~1.5V typ; pull up with a 100kΩ resistor for automatic startup.
8 SS passive Soft-Start Control Input. A capacitor from SS to GND sets the soft-start period (0.1µF ≈ 15ms via ~6µA charge current). Leave unconnected to disable the soft-start feature.
9 EP power_in Exposed thermal pad on the bottom of the ESOP-8 package. Internally connected to GND and must be soldered to the PCB ground plane for proper thermal performance.

Key specifications

Parameter Value
Manufacturer Techcode Semicon
Package SOIC-8-EP
Category PMIC
Pins 9

Ordering variants

Same part, different packaging or reel option.

  • TD1484AMR

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Shutdown Supply Current 1 3 µA VEN=0V 4
Supply Current 1.3 1.5 mA VFB=1.0V, VEN=2.0V 4
Feedback Voltage VFB 0.9 0.923 0.946 V 4.75V ≤ VIN ≤ 20V 4
High Side Switch Leakage Current 10 uA VEN=0V, VSW=0V 4
Upper Switch Current Limit 2.4 3.4 A Minimum Duty Cycle 4
EN Shutdown Threshold Voltage (VEN Rising) VEN 1.1 1.5 2 V VEN Rising 4
EN Lockout Threshold Voltage 2.2 2.5 2.7 V 4
Input Under Voltage Lockout Threshold (VIN Rising) 3.8 4.1 4.4 V VIN Rising 4
Supply Voltage VIN -0.3 23 V 3
Switch Node Voltage VSW -0.3 V Printed as VIN+0.3 (expression, max not numeric) 3
Output Voltage VOUT 0.923 20 V 3
All Other Pins -0.3 6 V 3
Operating Junction Temperature TJ 150 ℃ 3
Operating Ambient Temperature TA -40 80 ℃ 3
Storage Temperature TSTG -65 150 ℃ 3
Lead Temperature (Soldering) TLEAD 260 ℃ Soldering, 10 sec 3
ESD (HBM) 2000 V HBM 3
Junction to Ambient Resistance in Free Air RθJA 50 ℃/W Free air 3
Junction to Case Resistance in Free Air RθJC 10 ℃/W Free air 3
Input Supply Voltage (operating range) VIN 4.75 20 V 2
Output Voltage Adjustable Range VOUT 0.923 18 V 1

CAD (KiCad official)

  • Symbol: TD1484AMR
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: SOIC-8-EP (KiCad packages3D, STEP)
  • 3D model files: td1484amr-etched.step / td1484amr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); td1484amr.step / td1484amr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
td1484amr.step 193 KB You want the bare part, or you mark your own boards.
td1484amr-etched.step 1.4 MB You want the part with TD1484AMR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 377 faces against 63 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Techcode Semicon datasheet (13 pp, sha256 3605ce070377a87a, 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).

Datasheet PDF