# LM2575HVR-ADJ

**HTC Korea TAEJIN Tech** · DC-DC Converters · TO-263-5L

LM2575HVR-ADJ from HTC Korea TAEJIN Tech, in a TO-263-5L. 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 | Input supply pin; operating supply voltage up to 60V (absolute maximum 63V). |
| 2 | VOUT | output | Switch output voltage pin of the regulator, with steady-state output voltage to ground of -0.75V minimum. |
| 3 | GND | power_in | Ground pin; single-point grounding or a ground plane should be used for best results. |
| 4 | FB/ADJ | input | Output voltage feedback or output adjust pin; on the adjustable version the feedback voltage is 1.23V typical and R1 should be between 1kΩ and 5kΩ. |
| 5 | ON/OFF | input | Shutdown control pin; ON/OFF pin voltage range is -0.3V to VIN, with 5V on the pin turning the regulator off into a standby mode of 50uA typical. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | TO-263-5L |
| 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 Supply Voltage | VIN |  |  | 63 | V |  | 1 |
| ON/OFF Pin Input Voltage | VON/OFF | -0.3 |  |  | V | max printed as + VIN | 1 |
| Output Voltage to Ground (Steady State) | VOUT | -0.75 |  |  | V |  | 1 |
| Lead Temperature | TSOL |  |  | 260 | ℃ | Soldering, 5 sec | 1 |
| Storage Temperature Range | TSTG | -65 |  | 150 | ℃ |  | 1 |
| Maximum Junction Temperature | TJOPR |  |  | 150 | ℃ |  | 1 |
| Supply Voltage | VIN |  |  | 60 | V |  | 2 |
| Temperature Range | TJ | -40 |  | 125 | ℃ |  | 2 |
| Feedback Voltage | VFB | 1.217 | 1.23 | 1.243 | V | LM2575HV-ADJ, VIN=12V, ILOAD=0.5A | 4 |
| Feedback Voltage (over line and load) | VFB | 1.18 | 1.23 | 1.286 | V | 0.5A ≤ ILOAD ≤ 1A, 8V ≤ VIN ≤ 55V, full temperature range | 4 |
| Efficiency | η |  | 77 |  | % | LM2575HV-ADJ, VIN=12V, ILOAD=1A, Vo=5V | 4 |
| Feedback Bias Current | Ib |  | 50 | 500 | nA | VO=5V (Adjustable Version Only), max over full temperature range (100 at 25°C) | 4 |
| Oscillator Frequency | fO | 47 | 52 | 58 | KHZ | Note 8, TJ=25°C | 4 |
| Oscillator Frequency (full temperature range) | fO | 42 | 52 | 63 | KHZ | Note 8, full temperature range | 4 |
| Saturation Voltage | VSAT |  | 1.4 | 1.7 | V | IO=1A (Note 4), max over full temperature range (1.55 at 25°C) | 4 |
| Max Duty Cycle (ON) | DC | 93 | 98 |  | % | Note 5 | 4 |
| Current Limit | ICL | 4.2 | 5.8 | 6.9 | A | Notes 4, 8, TJ=25°C | 4 |
| Current Limit (full temperature range) | ICL | 3.5 | 5.8 | 7.5 | A | Notes 4, 8, full temperature range | 4 |
| Output Leakage Current | IL |  |  | 7.5 | mA | Notes 6, 7, Output=0V | 5 |
| Quiescent Current | IQ |  | 5 | 10 | mA | Note 6 | 5 |
| Standby Quiescent Current | ISTBY |  | 50 | 200 | uA | ON/OFF Pin=5V (OFF), VIN=60V | 5 |
| ON/OFF Pin Logic Input Level High | VIH | 2.4 | 1.4 |  | V | VO=0V | 5 |
| ON/OFF Pin Logic Input Level Low | VIL |  | 1.2 | 0.8 | V | VO=Nominal Output Voltage | 5 |
| ON/OFF Pin Input Current High | IIH |  | 12 | 30 | uA | ON/OFF Pin=5V (OFF) | 5 |
| ON/OFF Pin Input Current Low | IIL |  | 0 | 10 | uA | ON/OFF Pin=0V (ON) | 5 |

## CAD (KiCad official)

- Symbol: `LM2575HVR-ADJ`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5L (KiCad packages3D, STEP)
- 3D model files: `lm2575hvr-adj-etched.step` / `lm2575hvr-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2575hvr-adj.step` / `lm2575hvr-adj.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HTC Korea TAEJIN Tech datasheet](docs/lm2575hvr-adj-datasheet.pdf) (8 pp, sha256 `ec645555f2e7ffee`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lm2575hvr-adj-datasheet.pdf)