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XH2596-3.3

XINLUDA · DC-DC Converters · TO-263-5

XH2596-3.3 from XINLUDA, 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 Positive input supply, 4.5V to 40V operating range (45V absolute maximum), requiring a low-ESR bypass capacitor close to the pin.
2 Output output Internal switch output that swings between (VIN − VSAT) and about −0.5V with duty cycle of about VOUT/VIN; keep PCB copper area here minimal.
3 GND power_in Circuit ground.
4 Feedback input Senses the regulated output voltage to complete the feedback loop; for the 3.3V version it regulates to 3.3V output.
5 ON/OFF input Shutdown input: below about 1.3V turns regulator on, above 1.3V (up to 25V max) shuts it down to about 80 µA standby; may be tied to ground or left open if unused.
6 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer XINLUDA
Package TO-263-5
Category Power Management ICs
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 (3.3 V version) VOUT 3.135 3.3 3.465 V 4.75V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A; full operating temperature range 3
Oscillator frequency fO 110 150 173 kHz 4
Saturation voltage VSAT 1.16 1.5 V IOUT = 3A (Notes 7, 8) 4
Current limit peak current ICL 3.4 4.5 7.5 A Peak Current (Notes 7, 8) 4
Output leakage current IL 50 µA Output = 0V (Notes 7, 9) 4
Output leakage current IL 2 30 mA Output = −1V (Note 10) 4
Quiescent current IQ 5 10 mA (Note 9) 4
Standby quiescent current ISTBY 80 250 µA ON/OFF pin = 5V (OFF) 4
ON/OFF pin logic input threshold, low (regulator ON) VIL 0.6 V Low (Regulator ON) 4
ON/OFF pin logic input threshold, high (regulator OFF) VIH 2 V High (Regulator OFF) 4
ON/OFF pin input current (regulator OFF) IH 5 15 µA VLOGIC = 2.5V (Regulator OFF) 5
ON/OFF pin input current (regulator ON) IL 0.02 5 µA VLOGIC = 0.5V (Regulator ON) 5
Supply voltage 4.5 40 V 3
Operating junction temperature range TJ -40 125 ˚C 3
Maximum supply voltage 45 V 3
ON/OFF pin input voltage -0.3 25 V 3
Feedback pin voltage -0.3 25 V 3
Storage temperature range -65 150 ˚C 3
ESD susceptibility, human body model 2 kV Human Body Model (Note 2) 3
Lead temperature, vapor phase 215 ˚C Vapor Phase (60 sec.) 3
Lead temperature, infrared 245 ˚C Infrared (10 sec.) 3
Maximum junction temperature 150 ˚C 3
Thermal resistance, junction to case JC 2 ˚C/W TO-263 Package, Junction to Case 4
Thermal resistance, junction to ambient (Note 11) JA 50 ˚C/W TO-263 Package, Junction to Ambient (Note 11) 4
Thermal resistance, junction to ambient (Note 12) JA 30 ˚C/W TO-263 Package, Junction to Ambient (Note 12) 4
Thermal resistance, junction to ambient (Note 13) JA 20 ˚C/W TO-263 Package, Junction to Ambient (Note 13) 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper capacitor leads and short copper traces. Do not 10

CAD (KiCad official)

  • Symbol: XH2596-3.3
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: xh2596-3-3-etched.step / xh2596-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xh2596-3-3.step / xh2596-3-3.glb are the bare package body.

Provenance

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

  • Datasheet: XINLUDA datasheet (33 pp, sha256 cc3621918f0cfe09, retrieved 2026-11-05, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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