component
LM2595S-3.3RG
Public Made by Adomby adom
HANSCHIP semiconductor DC-DC Converters, TO-263-5L. 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
markdownLM2595S-3.3RG
HANSCHIP semiconductor · DC-DC Converters · TO-263-5L
LM2595S-3.3RG from HANSCHIP semiconductor, in a TO-263-5L. 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 | OUTPUT | output | Power switch output pin that forms the switching node supplying the output load; the negative voltage at this pin must stay above the internal parasitic diode turn-on voltage, so Schottky diodes with Vf below 0.5V are recommended. |
| 2 | VIN | power_in | Supply input that requires a DC supply in the 4.5V to 40V range, with a large-value capacitor between VIN and GND to suppress supply noise. |
| 3 | GND | power_in | Ground pin that should be connected on the layout to the ground path outside the Schottky diode output point so that switching current spikes do not add noise to the supply. |
| 4 | FEEDBACK | input | Voltage feedback pin that monitors the output through an external resistor divider and regulates it, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin in which a high level (threshold 1.4V) shuts the chip down and a low level (threshold 0.8V) enables it, with the pin defaulting to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HANSCHIP semiconductor |
| Package | TO-263-5L |
| 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 regulation (LM2595-3.3) | VOUT | 3.168 | 3.3 | 3.432 | V | VIN=4.75V～40V, ILOAD=0.2A～3A | 4 |
| Standby current | ISTBY | 80 | 200 | uA | VON_OFF=5V | 5 | |
| Quiescent operating current | IQ | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 5 | |
| Operating frequency | FOSC | 127 | 150 | 173 | kHz | 5 | |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 5 |
| ON_OFF pin threshold voltage, high level (control off) | VON_OFF | 1.4 | V | 5 | |||
| ON_OFF pin threshold voltage, low level (control on) | VON_OFF | 0.8 | V | 5 | |||
| Switch pin leakage current (high) | IH | 5 | 15 | µA | VON_OFF=2.5V(ON) | 5 | |
| Switch pin leakage current (low) | IL | 0.2 | 5 | µA | VON_OFF=2.5V(ON) | 5 | |
| Saturation voltage | VCE | 1.3 | 1.5 | V | VFB=0V, LOUT=3A | 5 | |
| Maximum duty cycle | DMAX | 100 | % | CFB=0V | 5 | ||
| Thermal resistance, junction to ambient (no heatsink) | RJA | 50 | ℃/W | No heatsink, TO220/TO263 package | 5 | ||
| Input supply voltage | VIN | 40 | V | 3 | |||
| Feedback pin voltage (upper limit printed as VIN) | VFB | -0.3 | V | 3 | |||
| ON_OFF pin voltage (upper limit printed as VIN) | VON_OFF | -0.3 | V | 3 | |||
| Power output pin voltage (upper limit printed as VIN) | VOUT PUT | -0.3 | V | 3 | |||
| Operating junction temperature (absolute maximum rating) | TJ | -40 | 125 | ℃ | 3 | ||
| Storage temperature | TSTG | -65 | 150 | ℃ | 3 | ||
| Lead soldering temperature | TLEAD | 245 | ℃ | 10 s | 3 | ||
| ESD capability (human body model) | ESD | 2000 | V | Human body model | 3 | ||
| Input voltage (recommended) | VIN | 5 | 40 | V | 3 | ||
| Operating junction temperature range (recommended) | TJ | -40 | 125 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
LM2595S-3.3RG - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5L (KiCad packages3D, STEP)
- 3D model files:
lm2595s-3-3rg-etched.step/lm2595s-3-3rg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2595s-3-3rg.step/lm2595s-3-3rg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HANSCHIP semiconductor datasheet (12 pp, sha256
a38c73808e083841, 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-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).