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LM2596HVS-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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LM2596HVS-3.3RG

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

LM2596HVS-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; requires a DC supply of 4.5V to 40V (57V for the HV type), with a large capacitor placed between this pin and ground to suppress supply noise.
2 OUTPUT output Power switch output pin; it is the switching node that drives the output load and inductor.
3 GND power_in Ground pin; the datasheet says it should be routed on a ground path separate from the output point of the Schottky diode to prevent switching-current spikes from coupling noise into the supply.
4 FEEDBACK input Voltage feedback pin that senses the output through an external resistor divider; the feedback threshold voltage is 1.23V.
5 ON_OFF input Enable pin: applying a high level (above 1.4V threshold) shuts the chip down, a low level (below 0.8V) enables it, and it 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 (LM2596HV-3.3) VOUT 3.168 3.3 3.432 V VIN=4.75V57V, ILOAD=0.2A3A 4
Input operating voltage (LM2596HV) VIN 4.5 57 V 5
Switching 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 (control off) VON_OFF 1.4 V high level (control off) 5
ON_OFF pin threshold voltage, low (control on) VON_OFF 0.8 V low level (control on) 5
ON_OFF pin input current IH IH 5 15 uA VON_OFF=2.5V(ON) 5
ON_OFF pin input current IL IL 0.2 5 uA VON_OFF=2.5V(ON) 5
Saturation voltage VCE 1.3 1.5 V VFB=0V, LOUT=3A 5
Standby current ISTBY 80 200 uA VON_OFF=5V 5
Quiescent operating current IQ 2 10 mA VON_OFF=0V, VFB=VIN 5
Absolute maximum input supply voltage (LM2596HV) VIN 57 V LM2596HV 3
Voltage feedback pin voltage VFB -0.3 V upper limit printed as VIN (not a number) 3
ON_OFF pin voltage VON_OFF -0.3 V upper limit printed as VIN (not a number) 3
Power transistor output pin voltage VOUT -0.3 V upper limit printed as VIN (not a number) 3
Operating junction temperature TJ -40 125 ℃ 3
Storage temperature TSTG -65 150 ℃ 3
Lead soldering temperature TLEAD 245 ℃ 10 s 3
Recommended input voltage (LM2596HV) VIN 5 57 V 3
Recommended operating junction temperature range TJ -40 125 ℃ 3
Thermal resistance, junction to ambient RJA 50 ℃/W no heatsink, TO220/TO263 package 5

CAD (KiCad official)

  • Symbol: LM2596HVS-3.3RG
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: lm2596hvs-3-3rg-etched.step / lm2596hvs-3-3rg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2596hvs-3-3rg.step / lm2596hvs-3-3rg.glb are the bare package body.

Provenance

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

  • Datasheet: HANSCHIP semiconductor datasheet (14 pp, sha256 27a648127d802573, 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, 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