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LM2596S-ADJRG

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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-ADJRG

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

LM2596S-ADJRG 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 requiring a DC source of 4.5 V to 40 V (57 V for the HV variant), with a large capacitor placed between VIN and GND to filter supply noise.
2 OUTPUT output Power switch output, a switching node that drives the output load and must not be driven below the internal parasitic diode turn-on voltage (use a Schottky with Vf below 0.5 V).
3 GND power_in Ground pin that should be routed on the output ground return path away from the Schottky diode so switching current spikes do not couple noise into the device.
4 FEEDBACK input Voltage feedback input that senses the output through an external resistor divider, with a regulation threshold of 1.23 V.
5 ON_OFF input Enable pin with hysteresis: driving it high (above 1.4 V) turns the regulator off, driving it low (below 0.8 V) turns it on, and it defaults 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
Input operating voltage (LM2596 non-HV) VIN 4.5 40 V 5
Output voltage regulation, LM2596-ADJ VOUT 1.193 1.23 1.267 V VIN=4.5V～40V, ILOAD=0.2A～3A 4
Oscillator frequency FOSC 127 150 173 kHz 5
Current limit IL 3.6 4.8 6.9 A VFB=0 5
Saturation voltage VCE 1.3 1.5 V VFB=0V, LOUT=3A 5
Quiescent operating current IQ 2 10 mA VON_OFF=0V, VFB=VIN 5
Standby current ISTBY 80 200 uA VON_OFF=5V 5
ON_OFF pin threshold, high (control off) VON_OFF 1.4 V 5
ON_OFF pin threshold, low (control on) VON_OFF 0.8 V 5
ON_OFF pin leakage current (OFF) IH 5 30 µA VON_OFF=2.5V(OFF) 5
ON_OFF pin leakage current (ON) IL 0.2 10 µA VON_OFF=0.5V(ON) 5
Maximum duty cycle DMAX 100 % CFB=0V 5
Thermal resistance junction-to-ambient (no heatsink, TO220/TO263) RJA 50 ℃/W TO220, TO263 package, no heatsink 5
Input voltage (recommended, LM2596) VIN 5 40 V LM2596 3
Operating junction temperature (recommended) TJ -40 125 ℃ 3
Input supply voltage (absolute max, LM2596) VIN 40 V LM2596 3
Feedback pin voltage (absolute) VFB -0.3 V 3
ON_OFF pin voltage (absolute) VON_OFF -0.3 V 3
Output pin voltage (absolute) VOUT PUT -0.3 V 3
Operating junction temperature (absolute) 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

CAD (KiCad official)

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

Provenance

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

  • Datasheet: HANSCHIP semiconductor datasheet (14 pp, sha256 1d030bc28ae7c67a, retrieved 2026-10-17, 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