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LM2591HVS-5.0
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
markdownLM2591HVS-5.0
UMW · DC-DC Converters · TO-263-5
LM2591HVS-5.0 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 | Input supply voltage pin (4.5V to 60V recommended operating range, 63V absolute maximum); needs a low-ESR bypass capacitor close to the pin. |
| 2 | Output | output | Internal switch output that swings between (VIN - VSAT) and about -0.5V with a duty cycle of approximately VOUT/VIN; keep the connected copper area minimal. |
| 3 | GND | power_in | Circuit ground. |
| 4 | Feedback | input | Senses the regulated output voltage to complete the feedback loop. |
| 5 | ON/OFF | input | Shutdown control, active low or floating for ON; pulling it above about 1.3V (up to 25V maximum) shuts the regulator down to about 80 µA input current. |
| 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 Supply Chip |
| 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 | VOUT | 4.75 | 5 | 5.25 | V | 7V≤VIN≤60V, 0.2A≤ILOAD≤1A; 25°C limits 4.800/5.200, full range 4.750/5.250 | 5 |
| Efficiency | η | 80 | % | VIN=12V, ILOAD=1A | 5 | ||
| Maximum Supply Voltage | 63 | V | 4 | ||||
| ON/OFF Pin Input Voltage | 25 | V | 4 | ||||
| Output Voltage to Ground (Steady State) | -1 | V | 4 | ||||
| Storage Temperature Range | -65 | 150 | °C | 4 | |||
| ESD Susceptibility Human Body Model | 2 | kV | 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 | |||
| Supply Voltage | 4.5 | 60 | V | 4 | |||
| Operating Temperature | -40 | 125 | °C | 4 | |||
| Oscillator Frequency | fO | 110 | 150 | 173 | kHz | 25°C limits 127/173; full range 110/173 | 6 |
| Thermal Resistance Junction to Case | θJC | 2 | °C/W | TO-220 or TO-263 Package | 7 | ||
| Thermal Resistance Junction to Ambient | θJA | 50 | °C/W | TO-263, 0.5 in2 copper (Note 12) | 7 | ||
| Thermal Resistance Junction to Ambient | θJA | 30 | °C/W | TO-263, 2.5 in2 copper (Note 13) | 7 | ||
| Thermal Resistance Junction to Ambient | θJA | 20 | °C/W | TO-263, double sided board 3 in2 / 16 in2 copper (Note 14) | 7 | ||
| ON/OFF Pin Logic Input Threshold Voltage, Low | VIL | 0.6 | 1.3 | V | Low (Regulator ON) | 7 | |
| ON/OFF Pin Logic Input Threshold Voltage, High | VIH | 1.3 | 2 | V | High (Regulator OFF) | 7 | |
| ON/OFF Pin Input Current | IH | 5 | 15 | µA | VLOGIC=2.5V (Regulator OFF) | 7 | |
| ON/OFF Pin Input Current | IL | 0.02 | 5 | µA | VLOGIC=0.5V (Regulator ON) | 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:
LM2591HVS-5.0 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2591hvs-5-0-etched.step/lm2591hvs-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2591hvs-5-0.step/lm2591hvs-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (22 pp, sha256
3830e8a059139e73, retrieved 2026-10-22, 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).