component
LM2576S-5.0
Public Made by Adomby adom
HGSEMI LM2576S 5 0 TR DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdownLM2576S-5.0
HGSEMI · DC-DC Converters · TO-263-5
LM2576S-5.0 from HGSEMI, 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 | Input supply voltage. Operating range 4.5V to 40V for LM2576 (up to 60V for LM2576HV). Absolute maximum 45V (63V HV). Bypass with a suitable input capacitor close to this pin. |
| 2 | Output | output | Switching output from the internal 3A power switch. Connects to the external catch diode (e.g. 1N5822) and the smoothing inductor (typ. 100µH). Steady-state output voltage may swing down to -1V relative to GND. |
| 3 | GND | power_in | Device ground reference for the internal regulator, oscillator, error amplifier, and power switch return. |
| 4 | Feedback | input | Output voltage feedback input to the internal error amplifier. On fixed-voltage versions (like the -5.0), tie directly to the regulated output node so the internal divider senses VOUT (internal 1.23V band-gap reference). |
| 5 | ON/OFF | input | TTL-compatible active-low shutdown input. Low or floating enables the regulator; drive high to enter low-power standby mode (~50µA typ). Input range -0.3V to +VIN. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-263-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
LM2576S-5.0SLM2576S-5.0T
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 (LM2576 5.0 version, VIN=12V, ILOAD=0.5A) | VOUT | 4.9 | 5 | 5.1 | V | VIN=12V, ILOAD=0.5A; Circuit of Figure 2 | 5 |
| Output Voltage (LM2576 5.0 version, TJ=25°C) | VOUT | 4.8 | 5 | 5.2 | V | 8V≤VIN≤40V, 0.5A≤ILOAD≤3A; Circuit of Figure 2 | 5 |
| Output Voltage (LM2576 5.0 version, full operating temperature range) | VOUT | 4.75 | 5 | 5.25 | V | 8V≤VIN≤40V, 0.5A≤ILOAD≤3A; Circuit of Figure 2 | 5 |
| Oscillator Frequency (TJ=25°C) | fO | 47 | 52 | 58 | kHz | VIN=12V, ILOAD=500mA (table default) | 8 |
| Oscillator Frequency (full operating temperature range) | fO | 42 | 52 | 63 | kHz | VIN=12V, ILOAD=500mA (table default) | 8 |
| Saturation Voltage (TJ=25°C) | VSAT | 1.4 | 1.8 | V | IOUT=3A (Note 4) | 8 | |
| Saturation Voltage (full operating temperature range) | VSAT | 1.4 | 2 | V | IOUT=3A (Note 4) | 8 | |
| Max Duty Cycle (ON) | DC | 93 | 98 | % | VIN=12V, ILOAD=500mA (table default) | 8 | |
| Current Limit (TJ=25°C) | ICL | 4.2 | 5.8 | 6.9 | A | 8 | |
| Current Limit (full operating temperature range) | ICL | 3.5 | 5.8 | 7.5 | A | 8 | |
| Standby Quiescent Current | ISTBY | 50 | 200 | µA | ON/OFF pin=5V (OFF) | 8 | |
| ON/OFF Pin Logic Input High Level (TJ=25°C) | VIH | 2.2 | 1.4 | V | VOUT=0V | 9 | |
| ON/OFF Pin Logic Input High Level (full operating temperature range) | VIH | 2.4 | 1.4 | V | VOUT=0V | 9 | |
| ON/OFF Pin Logic Input Low Level (TJ=25°C) | VIL | 1.2 | 1 | V | VOUT=Nominal Output Voltage | 9 | |
| ON/OFF Pin Logic Input Low Level (full operating temperature range) | VIL | 1.2 | 0.8 | V | VOUT=Nominal Output Voltage | 9 | |
| ON/OFF Pin Input Current (high, OFF) | IIH | 12 | 30 | µA | ON/OFF Pin=5V(OFF) | 9 | |
| ON/OFF Pin Input Current (low, ON) | IIL | 0 | 10 | µA | ON/OFF Pin=0V(ON) | 9 | |
| Operating Temperature Range (junction) | TJ | -40 | 125 | °C | 4 | ||
| Supply Voltage (LM2576) | 4.5 | 40 | V | 4 | |||
| Maximum Supply Voltage (LM2576) | 45 | V | 4 | ||||
| ON/OFF Pin Input Voltage (-0.3 ≤ V ≤ +VIN) | -0.3 | V | 4 | ||||
| Output Voltage to Ground (Steady State) | -1 | V | Steady state | 4 | |||
| Storage Temperature Range | -65 | 150 | °C | 4 | |||
| Maximum Junction Temperature | 150 | °C | 4 | ||||
| Minimum ESD Rating | 2 | kV | C=100pF, R=1.5kΩ | 4 | |||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10 seconds | 4 |
CAD (KiCad official)
- Symbol:
LM2576S-5.0 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2576s-5-0-etched.step/lm2576s-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2576s-5-0.step/lm2576s-5-0.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
lm2576s-5-0.step |
180 KB | You want the bare part, or you mark your own boards. |
lm2576s-5-0-etched.step |
2.0 MB | You want the part with LM2576S-5.0 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 536 faces against 135 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: HGSEMI datasheet (18 pp, sha256
10275fb18a78ad8b, 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).