component
LM2575HVS-12
Public Made by Adomby adom
UMW 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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Contents
README
markdownLM2575HVS-12
UMW · DC-DC Converters · TO-263-5
LM2575HVS-12 from UMW, 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 | Positive input supply for the switcher; a suitable low-ESR input bypass capacitor must be placed close to this pin to limit voltage transients and supply the switching currents, with supply limits of 40V for LM2575 and 60V for LM2575HV. |
| 2 | Output | output | Internal switch output that swings between (VIN - VSAT) and approximately -0.5V at a duty cycle of about VOUT/VIN, so its PCB copper area should be kept to a minimum to reduce coupling to sensitive circuitry. |
| 3 | GND | power_in | Circuit ground and common return for the regulator, which must be connected to the input and output capacitor grounds. |
| 4 | Feedback | input | Senses the regulated output voltage to close the feedback loop; for the adjustable version the feedback resistor divider R1/R2 is referenced to VREF = 1.23V. |
| 5 | ON/OFF | input | Logic-level shutdown input that turns the regulator on when pulled below about 1.3V and shuts it down when pulled above 1.3V up to a maximum of 25V; leaving it open or tying it to ground keeps the regulator on. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| 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 (12V version) | VOUT | 11.4 | 12 | 12.6 | V | Typ: VIN=25V, ILOAD=2A. Limits: 15V≤VIN≤40V, 60V(HV), 0.2A≤ILOAD≤2A | 5 |
| Oscillator frequency | fO | 42 | 52 | 63 | kHz | VIN=24V, ILOAD=500mA (12V version, unless otherwise specified) | 6 |
| Saturation voltage | VSAT | 1.16 | 1.5 | V | IOUT=2A (Notes 7, 8) | 6 | |
| Max duty cycle (ON) | DC | 93 | 98 | % | Note 8 | 6 | |
| Current limit (peak) | ICL | 1.3 | 2.2 | 3.2 | A | Peak Current (Notes 7, 8) | 6 |
| Standby quiescent current | ISTBY | 50 | 200 | µA | ON/OFF pin=5V (OFF) | 6 | |
| ON/OFF logic input threshold, high (regulator OFF) | VIH | 2.4 | 1.4 | V | High (Regulator OFF) | 7 | |
| ON/OFF logic input threshold, low (regulator ON) | VIL | 1.2 | 0.8 | V | Low (Regulator ON) | 7 | |
| ON/OFF pin input current, high | IH | 12 | 30 | µA | VLOGIC=2.5V (Regulator OFF) | 7 | |
| ON/OFF pin input current, low | IL | 0 | 10 | µA | VLOGIC=0.5V (Regulator ON) | 7 | |
| Maximum supply voltage (LM2575HV) | 63 | V | LM2575HV | 4 | |||
| ON/OFF pin input voltage | -0.3 | V | -0.3 ≤ V ≤ +VIN | 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 | ||||
| Soldering temperature, vapor phase | 215 | °C | 60 sec | 4 | |||
| Soldering temperature, infrared | 245 | °C | 10 sec | 4 | |||
| Soldering temperature, T package | 260 | °C | 10 sec | 4 | |||
| Operating junction temperature range | TJ | -40 | 125 | °C | -40°C ≤ TJ ≤ +125°C | 4 | |
| Supply voltage (LM2575HV) | 60 | V | LM2575HV | 4 | |||
| Thermal resistance, junction to case | θJC | 2 | °C/W | TO-220 or TO-263 package | 7 | ||
| Thermal resistance, junction to ambient (TO-263) | θJA | 50 | °C/W | TO-263, tab soldered to PCB with 0.5 in² 1 oz copper (Note 12) | 7 | ||
| Thermal resistance, junction to ambient (TO-263) | θJA | 30 | °C/W | TO-263, single-sided PCB with 2.5 in² 1 oz copper (Note 13) | 7 | ||
| Thermal resistance, junction to ambient (TO-263) | θJA | 20 | °C/W | TO-263, double-sided PCB with 3 in² 1 oz copper (Note 14) | 7 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2 | 8 |
CAD (KiCad official)
- Symbol:
LM2575HVS-12 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2575hvs-12-etched.step/lm2575hvs-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2575hvs-12.step/lm2575hvs-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (30 pp, sha256
b0c31af439f0b6b9, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).