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chore: import upstream snapshot with attribution
2026-07-13 13:03:19 +08:00

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(export (version "E")
(design
(source "C:\\Users\\gayli\\Documents\\Work\\SnorkelAI\\Ohm Bench\\kicad_smps3p3V_circuit\\kicad_smps3p3V_circuit.kicad_sch")
(date "2026-02-21T12:06:27-1000")
(tool "Eeschema 9.0.7")
(sheet (number "1") (name "/") (tstamps "/")
(title_block
(title)
(company)
(rev)
(date)
(source "kicad_smps3p3V_circuit.kicad_sch")
(comment (number "1") (value ""))
(comment (number "2") (value ""))
(comment (number "3") (value ""))
(comment (number "4") (value ""))
(comment (number "5") (value ""))
(comment (number "6") (value ""))
(comment (number "7") (value ""))
(comment (number "8") (value ""))
(comment (number "9") (value "")))))
(components
(comp (ref "C1")
(value "100 uF")
(datasheet "~")
(description "Polarized capacitor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Polarized capacitor, US symbol"))
(libsource (lib "Device") (part "C_Polarized_US") (description "Polarized capacitor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_smps3p3V_circuit.kicad_sch"))
(property (name "ki_keywords") (value "cap capacitor"))
(property (name "ki_fp_filters") (value "CP_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "95cf1836-42cc-4b4a-a657-eb9803fc427f"))
(comp (ref "C2")
(value "1000 uF")
(datasheet "~")
(description "Polarized capacitor, US symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Polarized capacitor, US symbol"))
(libsource (lib "Device") (part "C_Polarized_US") (description "Polarized capacitor, US symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_smps3p3V_circuit.kicad_sch"))
(property (name "ki_keywords") (value "cap capacitor"))
(property (name "ki_fp_filters") (value "CP_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "fa5c0dad-89f9-42f6-97ef-2ecc0f62b328"))
(comp (ref "D1")
(value "1N5822")
(footprint "Diode_THT:D_DO-201AD_P15.24mm_Horizontal")
(datasheet "http://www.vishay.com/docs/88526/1n5820.pdf")
(description "40V 3A Schottky Barrier Rectifier Diode, DO-201AD")
(fields
(field (name "Footprint") "Diode_THT:D_DO-201AD_P15.24mm_Horizontal")
(field (name "Datasheet") "http://www.vishay.com/docs/88526/1n5820.pdf")
(field (name "Description") "40V 3A Schottky Barrier Rectifier Diode, DO-201AD"))
(libsource (lib "Diode") (part "1N5822") (description "40V 3A Schottky Barrier Rectifier Diode, DO-201AD"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_smps3p3V_circuit.kicad_sch"))
(property (name "ki_keywords") (value "diode Schottky"))
(property (name "ki_fp_filters") (value "D*DO?201AD*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "aaa3ea98-14db-4883-9a02-a08eff6f8bf6"))
(comp (ref "L1")
(value "100 uH")
(datasheet "~")
(description "Inductor, small symbol")
(fields
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Inductor, small symbol"))
(libsource (lib "Device") (part "L_Small") (description "Inductor, small symbol"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_smps3p3V_circuit.kicad_sch"))
(property (name "ki_keywords") (value "inductor choke coil reactor magnetic"))
(property (name "ki_fp_filters") (value "Choke_* *Coil* Inductor_* L_*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "8ff96771-ecbe-4f26-bc6e-ba732cc8ed7c"))
(comp (ref "U1")
(value "LM2576HVS-3.3")
(footprint "Package_TO_SOT_SMD:TO-263-5_TabPin3")
(datasheet "http://www.ti.com/lit/ds/symlink/lm2576.pdf")
(description "3.3V, 3A, SIMPLE SWITCHER® Step-Down Voltage Regulator, High Voltage Input, TO-263")
(fields
(field (name "Footprint") "Package_TO_SOT_SMD:TO-263-5_TabPin3")
(field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm2576.pdf")
(field (name "Description") "3.3V, 3A, SIMPLE SWITCHER® Step-Down Voltage Regulator, High Voltage Input, TO-263"))
(libsource (lib "Regulator_Switching") (part "LM2576HVS-3.3") (description "3.3V, 3A, SIMPLE SWITCHER® Step-Down Voltage Regulator, High Voltage Input, TO-263"))
(property (name "Sheetname") (value "Root"))
(property (name "Sheetfile") (value "kicad_smps3p3V_circuit.kicad_sch"))
(property (name "ki_keywords") (value "Step-Down Voltage Regulator 3.3V 3A High Voltage"))
(property (name "ki_fp_filters") (value "TO?263*"))
(sheetpath (names "/") (tstamps "/"))
(tstamps "36ce7af2-e21f-4b1c-9b78-e82d1e4c2b0b")))
(libparts
(libpart (lib "Device") (part "C_Polarized_US")
(description "Polarized capacitor, US symbol")
(docs "~")
(footprints
(fp "CP_*"))
(fields
(field (name "Reference") "C")
(field (name "Value") "C_Polarized_US")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Polarized capacitor, US symbol"))
(pins
(pin (num "1") (name "") (type "passive"))
(pin (num "2") (name "") (type "passive"))))
(libpart (lib "Device") (part "L_Small")
(description "Inductor, small symbol")
(docs "~")
(footprints
(fp "Choke_*")
(fp "*Coil*")
(fp "Inductor_*")
(fp "L_*"))
(fields
(field (name "Reference") "L")
(field (name "Value") "L_Small")
(field (name "Footprint"))
(field (name "Datasheet") "~")
(field (name "Description") "Inductor, small symbol"))
(pins
(pin (num "1") (name "") (type "passive"))
(pin (num "2") (name "") (type "passive"))))
(libpart (lib "Diode") (part "1N5822")
(description "40V 3A Schottky Barrier Rectifier Diode, DO-201AD")
(docs "http://www.vishay.com/docs/88526/1n5820.pdf")
(footprints
(fp "D*DO?201AD*"))
(fields
(field (name "Reference") "D")
(field (name "Value") "1N5822")
(field (name "Footprint") "Diode_THT:D_DO-201AD_P15.24mm_Horizontal")
(field (name "Datasheet") "http://www.vishay.com/docs/88526/1n5820.pdf")
(field (name "Description") "40V 3A Schottky Barrier Rectifier Diode, DO-201AD"))
(pins
(pin (num "1") (name "K") (type "passive"))
(pin (num "2") (name "A") (type "passive"))))
(libpart (lib "Regulator_Switching") (part "LM2576HVS-3.3")
(description "3.3V, 3A, SIMPLE SWITCHER® Step-Down Voltage Regulator, High Voltage Input, TO-263")
(docs "http://www.ti.com/lit/ds/symlink/lm2576.pdf")
(footprints
(fp "TO?263*"))
(fields
(field (name "Reference") "U")
(field (name "Value") "LM2576HVS-3.3")
(field (name "Footprint") "Package_TO_SOT_SMD:TO-263-5_TabPin3")
(field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm2576.pdf")
(field (name "Description") "3.3V, 3A, SIMPLE SWITCHER® Step-Down Voltage Regulator, High Voltage Input, TO-263"))
(pins
(pin (num "1") (name "VIN") (type "power_in"))
(pin (num "2") (name "OUT") (type "output"))
(pin (num "3") (name "GND") (type "power_in"))
(pin (num "4") (name "FB") (type "input"))
(pin (num "5") (name "~{ON}/OFF") (type "input")))))
(libraries
(library (logical "Device")
(uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Device.kicad_sym"))
(library (logical "Diode")
(uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Diode.kicad_sym"))
(library (logical "Regulator_Switching")
(uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Regulator_Switching.kicad_sym")))
(nets
(net (code "1") (name "+48V") (class "Default")
(node (ref "C1") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "1") (pinfunction "VIN") (pintype "power_in")))
(net (code "2") (name "GND") (class "Default")
(node (ref "C1") (pin "2") (pintype "passive"))
(node (ref "C2") (pin "2") (pintype "passive"))
(node (ref "D1") (pin "2") (pinfunction "A") (pintype "passive"))
(node (ref "U1") (pin "3") (pinfunction "GND") (pintype "power_in"))
(node (ref "U1") (pin "5") (pinfunction "~{ON}/OFF") (pintype "input")))
(net (code "3") (name "Net-(D1-K)") (class "Default")
(node (ref "D1") (pin "1") (pinfunction "K") (pintype "passive"))
(node (ref "L1") (pin "1") (pintype "passive"))
(node (ref "U1") (pin "2") (pinfunction "OUT") (pintype "output")))
(net (code "4") (name "Net-(U1-FB)") (class "Default")
(node (ref "C2") (pin "1") (pintype "passive"))
(node (ref "L1") (pin "2") (pintype "passive"))
(node (ref "U1") (pin "4") (pinfunction "FB") (pintype "input")))))