component

LS0505EVD22

Public Made by Adom

by adom

Littelfuse Surge Protection Devices (SPDs), DFN-8(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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LS0505EVD22

Littelfuse · Surge Protection Devices (SPDs) · DFN-8(2x2)

LS0505EVD22 from Littelfuse, in a DFN-8(2x2). 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 IN power_in Input pin; the valid input range is 2.7 V to 28 V, with an absolute maximum of -0.3 to +30 V referenced to GND.
2 GND power_in Ground pin; it must be tied to the PCB ground plane at the IC terminal.
3 NC unconnected No connection.
4 NC unconnected No connection.
5 EN input Enable pin; pull it above the 1.2 V EN logic-high threshold to enable the IC and below the 0.4 V EN logic-low threshold to disable it.
6 NC unconnected No connection.
7 ILIM passive Current-limit programming pin; connect a resistor to ground to set the limit (ILIM = 750 A·kΩ / RLIM, so 500 kΩ gives 1.5 A typ), and this pin must not be shorted to ground.
8 OUT power_out Output pin; during an over-voltage event OUT is discharged to GND through an internal 80 Ω resistor.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package DFN-8(2x2)
Category Circuit Protection
Pins 8

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 voltage range VIN 2.7 28 V 2
Quiescent current IBIAS 200 260 µA 2
Shutdown current ISD 5 10 µA VEN=0V 2
Current limit (programmed) ILIMT 1.35 1.5 1.65 A RLIM=500 kΩ 2
Current limit setting factor KLIM 675 750 825 A*kΩ IINLIM=1 A~5 A 2
Input voltage range (recommended) 2.7 28 V 2
Junction temperature range (recommended) 125 °C 2
Voltage on IN, OUT, EN (reference to GND) -0.3 30 V 2
Voltage on ILIM (reference to GND) -0.3 6.5 V 2
ESD, Human Body Model (HBM) -2000 2000 V Human Body Model, JESD22-A114F 2
Junction temperature range -40 150 °C 2
Storage temperature range -65 150 °C 2
Lead temperature (soldering) 260 °C Soldering 10 s 2
Input under-voltage threshold VUV 2.48 V 2
Input under-voltage hysteresis VUVHYS 180 mV 2
Input over-voltage threshold VOV 6.2 V 2
Over-voltage protection response time VOV 250 nS 2
Input over-voltage hysteresis VOV 330 mV 2
Soft-start slew rate time TSS 230 µs 2
Current limit (ILIM pin float) ILIMT 5 A ILIM pin float 2
OUT discharging resistance RDisch 80 Ω VIN=6.5 V 2
EN logic high input voltage VIH_EN 1.2 V 2
EN logic low input voltage VIL_EN 0.4 V 2
Thermal shutdown temperature TSD 160 °C 2
Thermal shutdown hysteresis THYS 40 °C 2
Maximum power dissipation 1.52 W TA=25°C 2
Thermal resistance, junction to ambient θJA 82 °C/W JESD51-7, 4-layer PCB 2
Thermal resistance, junction to case θJC 52 °C/W 2
On-resistance (feature bullet, not a table value) RDS(ON) 50 mΩ 1

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 ■ The GND terminal must be tied to the PCB ground plane at the terminal of the IC. The PCB ground should be a copper plane or island on 5

CAD (KiCad official)

  • Symbol: LS0505EVD22
  • Footprint: Package_DFN_QFN:DFN-8_2x2mm_P0.5mm
  • 3D model: DFN-8(2x2) (KiCad packages3D, STEP)
  • 3D model files: ls0505evd22-etched.step / ls0505evd22-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ls0505evd22.step / ls0505evd22.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (7 pp, sha256 d459e5a357876edc, retrieved 2026-10-19, tier: lcsc)
  • 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