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LM2575S-15
Public Made by Adomby adom
HGSEMI 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
markdownLM2575S-15
HGSEMI · DC-DC Converters · TO-263-5
LM2575S-15 from HGSEMI, 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 | Unregulated supply input, up to 40V for LM2575 (60V for HV versions), absolute maximum. |
| 2 | Output | output | Switch output of the regulator; output voltage to ground is limited to -1V steady state. |
| 3 | Ground | power_in | Ground pin; the package tab is also connected to GND. |
| 4 | Feedback | input | Feedback input to sense the output voltage; on the fixed 15V version it connects to the output. |
| 5 | ON/OFF | input | Active-low TTL shutdown input for the low-power standby mode (about 50uA typical); input range -0.3V to VIN. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| 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 (fixed 15V, LM2575, 25V input) | VOUT | 14.7 | 15 | 15.3 | V | VIN = 25V, I负载 = 0.5A; 电路图 2 | 6 |
| Output voltage (LM2575, line and load regulation, full range) | VOUT | 14.25 | 15 | 15.75 | V | 18V ≦ VIN ≦ 40V, 0.5A ≦ I负载 ≦ 2A; 电路图 2 | 6 |
| Output voltage accuracy (spec text) | VOUT | -4 | 4 | % | 指定输入电压和输出负载条件下 | 3 | |
| Oscillator frequency accuracy (spec text) | fO | -10 | 10 | % | 3 | ||
| Oscillator frequency | fO | 42 | 52 | 63 | kHz | 注 11 | 7 |
| Saturation voltage | VSAT | 1.4 | 2 | V | IOUT = 2A（注 4） | 7 | |
| Maximum duty cycle (ON) | DC | 93 | 98 | % | 注 5 | 7 | |
| Current limit | ICL | 3.5 | 5.8 | 7.5 | A | 注 4，11 | 7 |
| Output leakage current (output = 0V) | IL | 7.5 | mA | 输出= 0V（注 6,7） | 7 | ||
| Output leakage current (output = -1V) | IL | 2 | 30 | mA | 输出= -1V（注 6,7） | 7 | |
| Quiescent current | IQ | 5 | 10 | mA | 注 6 | 7 | |
| Standby quiescent current | ISTBY | 50 | 200 | µA | 通/断管脚=5V（截至断） | 7 | |
| ON/OFF control logic input level high | VIH | 2.4 | 1.4 | V | VOUT = 0V | 7 | |
| ON/OFF control logic input level low | VIL | 1.2 | 0.8 | V | VOUT = 标称输入电压 | 7 | |
| ON/OFF control input current (off) | IIH | 12 | 30 | µA | 通/断控制（断） | 7 | |
| ON/OFF control input current (on) | IIL | 0 | 10 | µA | 通/断控制=0V（通） | 7 | |
| Supply voltage LM2575 (absolute maximum) | VIN | 40 | V | 4 | |||
| ON/OFF pin input voltage | VON_OFF | -0.3 | V | 4 | |||
| Output voltage to ground (steady state) | -1 | V | 4 | ||||
| Storage temperature range | TSTG | -65 | 150 | ℃ | 4 | ||
| Maximum junction temperature | TJ | 150 | ℃ | 4 | |||
| ESD rating | ESD | 2 | KV | C = 100 pF, R = 1.5 kΩ | 4 | ||
| Lead temperature (soldering) | TLEAD | 245 | ℃ | TO-220/TO-263；焊接，10 秒 | 4 | ||
| Supply voltage LM2575 (recommended) | VIN | 40 | V | 5 | |||
| Operating junction temperature range | TA | -40 | 125 | ℃ | 5 | ||
| Thermal resistance, junction to ambient, S package | θJA | 50 | °C/W | S 型封装，结至环境（注 10） | 7 | ||
| Junction to ambient thermal resistance (TO-263) | RθJA | 42.6 | °C/W | TO-263 | 4 | ||
| Junction to case (top) thermal resistance (TO-263) | RθJC(top) | 43.3 | °C/W | TO-263 | 4 | ||
| Junction to board thermal resistance (TO-263) | RθJB | 22.4 | °C/W | TO-263 | 4 | ||
| Junction to case (bottom) thermal resistance (TO-263) | RθJC(bot) | 0.4 | °C/W | TO-263 | 4 | ||
| Junction to top characterization parameter (TO-263) | ΨJT | 10.7 | °C/W | TO-263 | 4 | ||
| Junction to board characterization parameter (TO-263) | ΨJB | 21.3 | °C/W | TO-263 | 4 |
CAD (KiCad official)
- Symbol:
LM2575S-15 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2575s-15-etched.step/lm2575s-15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2575s-15.step/lm2575s-15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (13 pp, sha256
91b888105249098d, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).