# LM2596S-5.0RG

**HANSCHIP semiconductor** · DC-DC Converters · TO-263-5

LM2596S-5.0RG from HANSCHIP semiconductor, 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 | Supply input pin that requires a DC supply of 4.5V to 40V (57V for the HV versions), with a large capacitor placed between VIN and GND to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin, a switching node that supplies the output load. |
| 3 | GND | power_in | Ground pin that should be routed on the layout to the ground path away from the output point of the Schottky diode to limit switching-current spike noise. |
| 4 | FEEDBACK | bidirectional | Voltage feedback pin that monitors the output voltage through a resistor divider network and regulates it; the feedback threshold voltage is 1.23V. |
| 5 | ON_OFF | input | Enable/shutdown pin: applying a high level (above 1.4V) turns the chip off and a low level (below 0.8V) turns it on, and it defaults 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-263-5 |
| 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 (LM2596-5.0, VIN=7V~40V) | VOUT | 4.8 | 5 | 5.2 | V | VIN=7V～40V ILOAD=0.2A～3A | 4 |
| Input operating voltage (LM2596) | VIN | 4.5 |  | 40 | V |  | 5 |
| Standby current | ISTBY |  | 80 | 200 | uA | VON_OFF=5V | 5 |
| Quiescent operating current | IQ |  | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 5 |
| Oscillator frequency | FOSC | 127 | 150 | 173 | kHz |  | 5 |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 5 |
| Switch pin threshold voltage, high (control OFF) | VON_OFF | 1.4 |  |  | V |  | 5 |
| Switch pin threshold voltage, low (control ON) | VON_OFF |  |  | 0.8 | V |  | 5 |
| Switch pin leakage (OFF) | IH |  | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 5 |
| Switch pin leakage (ON) | IL |  | 0.2 | 10 | µA | VON_OFF=0.5V(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, TO220/TO263 package) | RJA |  | 50 |  | ℃/W | 无散热片, TO220/TO263 封装 | 5 |
| Input voltage (LM2596), absolute maximum | VIN |  |  | 40 | V |  | 3 |
| Feedback pin voltage, lower limit | VFB | -0.3 |  |  | V | upper limit printed as VIN | 3 |
| ON_OFF pin voltage, lower limit | VON_OFF | -0.3 |  |  | V | upper limit printed as VIN | 3 |
| Power transistor output pin voltage, lower limit | VOUT | -0.3 |  |  | V | upper limit printed as VIN | 3 |
| Operating junction temperature (absolute maximum) | TJ | -40 |  | 125 | ℃ |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | ℃ |  | 3 |
| Lead soldering temperature | TLEAD |  |  | 245 | ℃ | 10S | 3 |
| ESD capability (human body model) | ESD |  |  | 2000 | V | 人体放电模式 | 3 |
| Input voltage (LM2596), recommended | VIN | 5 |  | 40 | V |  | 3 |
| Operating junction temperature range, recommended | TJ | -40 |  | 125 | ℃ |  | 3 |

## CAD (KiCad official)

- Symbol: `LM2596S-5.0RG`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `lm2596s-5-0rg-etched.step` / `lm2596s-5-0rg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2596s-5-0rg.step` / `lm2596s-5-0rg.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HANSCHIP semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757279676786327552) (14 pp, sha256 `1d030bc28ae7c67a`, retrieved 2026-10-10, 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`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lm2596s-5-0rg-datasheet.pdf)