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LM2596S-3.3RG
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HANSCHIP semiconductor DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2596S-3.3RG
HANSCHIP semiconductor · DC-DC Converters · TO-263-5
LM2596S-3.3RG 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 requiring a DC supply of 4.5V to 40V (57V for the HV variant), with a large-value capacitor between this pin and ground to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin that acts as the switching node supplying the output load. |
| 3 | GND | power_in | Ground pin that should be routed on the layout away from the Schottky diode output point so that switching current spikes do not couple noise into the supply. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output through an external resistor divider and regulates it, with a threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin: a low level (up to 0.8V) turns the regulator on and a high level (at least 1.4V) shuts it off, and the pin defaults to low when left 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 regulation (LM2596-3.3) | VOUT | 3.168 | 3.3 | 3.432 | V | VIN=4.75V～40V, ILOAD=0.2A～3A | 4 |
| Efficiency | Ƞ | 73 | % | VIN=12V,VOUT=5V, ILOAD=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 |
| ON/OFF pin threshold voltage, control off (high) | VON_OFF | 1.4 | V | 5 | |||
| ON/OFF pin threshold voltage, control on (low) | VON_OFF | 0.8 | V | 5 | |||
| ON/OFF pin input current, high (OFF) | IH | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 5 | |
| ON/OFF pin input current, low (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 (no heatsink), TO220/TO263 封装 | 5 | ||
| Input voltage, recommended (LM2596) | VIN | 5 | 40 | V | 3 | ||
| Operating junction temperature range | TJ | -40 | 125 | ℃ | 3 | ||
| Input supply voltage (LM2596), absolute maximum | VIN | 40 | V | 3 | |||
| Feedback pin voltage, absolute maximum | VFB | -0.3 | V | 3 | |||
| ON/OFF pin voltage, absolute maximum | VON_OFF | -0.3 | V | 3 | |||
| Power transistor output pin voltage, absolute maximum | VOUT | -0.3 | V | 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 (HBM) | 3 |
CAD (KiCad official)
- Symbol:
LM2596S-3.3RG - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2596s-3-3rg-etched.step/lm2596s-3-3rg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596s-3-3rg.step/lm2596s-3-3rg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HANSCHIP semiconductor datasheet (14 pp, sha256
1d030bc28ae7c67a, retrieved 2026-10-19, 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).
# LM2596S-3.3RG
**HANSCHIP semiconductor** · DC-DC Converters · TO-263-5
LM2596S-3.3RG 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 requiring a DC supply of 4.5V to 40V (57V for the HV variant), with a large-value capacitor between this pin and ground to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin that acts as the switching node supplying the output load. |
| 3 | GND | power_in | Ground pin that should be routed on the layout away from the Schottky diode output point so that switching current spikes do not couple noise into the supply. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output through an external resistor divider and regulates it, with a threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin: a low level (up to 0.8V) turns the regulator on and a high level (at least 1.4V) shuts it off, and the pin defaults to low when left 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 regulation (LM2596-3.3) | VOUT | 3.168 | 3.3 | 3.432 | V | VIN=4.75V～40V, ILOAD=0.2A～3A | 4 |
| Efficiency | Ƞ | | 73 | | % | VIN=12V,VOUT=5V, ILOAD=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 |
| ON/OFF pin threshold voltage, control off (high) | VON_OFF | | 1.4 | | V | | 5 |
| ON/OFF pin threshold voltage, control on (low) | VON_OFF | | 0.8 | | V | | 5 |
| ON/OFF pin input current, high (OFF) | IH | | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 5 |
| ON/OFF pin input current, low (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 (no heatsink), TO220/TO263 封装 | 5 |
| Input voltage, recommended (LM2596) | VIN | 5 | | 40 | V | | 3 |
| Operating junction temperature range | TJ | -40 | | 125 | ℃ | | 3 |
| Input supply voltage (LM2596), absolute maximum | VIN | | | 40 | V | | 3 |
| Feedback pin voltage, absolute maximum | VFB | -0.3 | | | V | | 3 |
| ON/OFF pin voltage, absolute maximum | VON_OFF | -0.3 | | | V | | 3 |
| Power transistor output pin voltage, absolute maximum | VOUT | -0.3 | | | V | | 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 (HBM) | 3 |
## CAD (KiCad official)
- Symbol: `LM2596S-3.3RG`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `lm2596s-3-3rg-etched.step` / `lm2596s-3-3rg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2596s-3-3rg.step` / `lm2596s-3-3rg.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/8757279832714043392) (14 pp, sha256 `1d030bc28ae7c67a`, retrieved 2026-10-19, 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-3-3rg-datasheet.pdf)