component
LM2576R-ADJ
Public Made by Adomby adom
HTC Korea TAEJIN Tech DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# LM2576R-ADJ++**HTC Korea TAEJIN Tech** · DC-DC Converters · TO-263-5++LM2576R-ADJ from HTC Korea TAEJIN Tech, in a TO-263-5. 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 LM2576 step-down switching regulator. Absolute maximum 45V; operating up to 40V. Requires a bypass capacitor (Cin) close to the pin to minimize voltage transients and supply the switching currents. |+| 2 | VOUT | output | Emitter of the internal switching transistor (switch node). Saturation voltage V_SAT typically 1.5V (max 2V) at 3.0A. Connects to the external catch diode and inductor; PCB copper area on this pin should be kept small to minimize coupling to sensitive circuitry. |+| 3 | GND | power_in | Circuit ground pin. Return for input bypass, output filter, and internal control circuitry. Also serves as the thermal return path via the TO-263 tab. |+| 4 | FEEDBACK | input | Feedback sense input to the internal error amplifier. On the adjustable version this is the direct amplifier input; connect an external R1/R2 divider to program Vout via Vout = Vref(1 + R2/R1), Vref = 1.23V (R1 typically 1.0k-5.0k). Feedback bias current typically 25nA (max 200nA over temperature). |+| 5 | ON/OFF | input | TTL-compatible shutdown input. Threshold typically 1.4V: pulling above the threshold (up to +Vin) shuts the regulator off (drops supply current to ~80µA); low or open enables normal operation. Input voltage range -0.3V ≤ V ≤ +Vin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HTC Korea TAEJIN Tech |+| Package | TO-263-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `LM2576R-ADJ`+- `LM2576R-ADJLM2576T-ADJ`+- `LM2576R-ADJLM2576DP-ADJ`++## CAD (KiCad official)++- Symbol: `LM2576R-ADJ`+- Footprint: `Package_TO_SOT_SMD:TO-263-2`+- 3D model: TO-263-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [HTC Korea TAEJIN Tech datasheet](docs/lm2576r-adj-datasheet.pdf) (11 pp, sha256 `2acb3c8a94295de6`, 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](docs/lm2576r-adj-datasheet.pdf)
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