component
LM2576HVR-3.3
Public Made by Adomby adom
HTC Korea TAEJIN Tech DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2576HVR-3.3
HTC Korea TAEJIN Tech · DC-DC Converters · TO-263-5
LM2576HVR-3.3 from HTC Korea TAEJIN Tech, 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 | Input supply pin; operating supply voltage up to 60V (absolute maximum 63V). |
| 2 | VOUT | output | Switched regulator output voltage pin (3.3V fixed on this version); output to ground steady-state minimum -0.75V. |
| 3 | GND | power_in | Ground pin. |
| 4 | FB/ADJ | input | Output voltage feedback pin (output adjust on the adjustable version); connected to the regulated output on the fixed 3.3V version. |
| 5 | ON/OFF | input | Shutdown control input; TTL-compatible, pin voltage range -0.3V to VIN, high (about 5V) turns the regulator off into standby mode. |
| 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-263-5 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage | VO | 3.234 | 3.3 | 3.366 | V | LM2576HV-3.3, VIN =12V, ILOAD =0.5A | 4 |
| Output Voltage | VO | 3.168 | 3.3 | 3.45 | V | LM2576HV-3.3, 0.5A ≤ ILOAD ≤ 3A, 6V ≤ VIN ≤ 55V | 4 |
| Output Voltage (full temperature range) | VO | 3.135 | 3.482 | V | LM2576HV-3.3, 0.5A ≤ ILOAD ≤ 3A, 6V ≤ VIN ≤ 55V | 4 | |
| Efficiency | 75 | % | LM2576HV-3.3, VIN =12V, ILOAD =3A | 4 | |||
| Oscillator Frequency | fO | 47 | 52 | 58 | kHZ | (Note 8) | 4 |
| Oscillator Frequency (full temperature range) | fO | 42 | 63 | kHZ | (Note 8) | 4 | |
| Saturation Voltage | VSAT | 1.4 | 1.55 | V | IO = 3A (Note 4) | 4 | |
| Saturation Voltage (full temperature range) | VSAT | 1.7 | V | IO = 3A (Note 4) | 4 | ||
| Max Duty Cycle (ON) | DC | 93 | 98 | % | (Note 5) | 4 | |
| Current Limit | ICL | 4.2 | 5.8 | 6.9 | A | (Note 4, 8) | 4 |
| Current Limit (full temperature range) | ICL | 3.5 | 7.5 | A | (Note 4, 8) | 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 | 2.2 | 1.4 | V | VO = 0V | 5 | |
| ON/OFF Pin Logic Input Level High (full temperature range) | VIH | 2.4 | V | VO = 0V | 5 | ||
| ON/OFF Pin Logic Input Level Low | VIL | 1.2 | V | VO = Nominal Output Voltage | 5 | ||
| ON/OFF Pin Logic Input Level Low (other values) | VIL | 1 | 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 | |
| Input Supply Voltage | VIN | 63 | V | 1 | |||
| ON/OFF Pin Input Voltage | -0.3 | V | max = +VIN | 1 | |||
| Output Voltage to Ground (Steady State) | -0.75 | V | 1 | ||||
| Lead Temperature (Soldering, 5 sec) | TSOL | 260 | ℃ | 1 | |||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 1 | ||
| Maximum Junction Temperature | TJOPR | 150 | ℃ | 1 | |||
| Supply Voltage | VIN | 60 | V | Operating Ratings | 2 | ||
| Operating Junction Temperature Range | TJ | -40 | 125 | ℃ | Operating Ratings | 2 |
CAD (KiCad official)
- Symbol:
LM2576HVR-3.3 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2576hvr-3-3-etched.step/lm2576hvr-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2576hvr-3-3.step/lm2576hvr-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (8 pp, sha256
d07d513e4d37f22f, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).