(kicad_sch (version 20230121) (generator eeschema)

  (uuid dfd5ca46-a59a-4502-8a63-d751b78779b6)

  (paper "A4")

  (title_block
    (title "3.6-4.5V to 3.3V buck converter")
    (date "2023-09-01")
    (company "Regnum Technology")
  )

  (lib_symbols
    (symbol "Device:C" (pin_numbers hide) (pin_names (offset 0.254)) (in_bom yes) (on_board yes)
      (property "Reference" "C" (at 0.635 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Value" "C" (at 0.635 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "" (at 0.9652 -3.81 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "cap capacitor" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Unpolarized capacitor" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "C_*" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "C_0_1"
        (polyline
          (pts
            (xy -2.032 -0.762)
            (xy 2.032 -0.762)
          )
          (stroke (width 0.508) (type default))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -2.032 0.762)
            (xy 2.032 0.762)
          )
          (stroke (width 0.508) (type default))
          (fill (type none))
        )
      )
      (symbol "C_1_1"
        (pin passive line (at 0 3.81 270) (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:L" (pin_numbers hide) (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
      (property "Reference" "L" (at -1.27 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "L" (at 1.905 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "inductor choke coil reactor magnetic" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Inductor" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "Choke_* *Coil* Inductor_* L_*" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "L_0_1"
        (arc (start 0 -2.54) (mid 0.6323 -1.905) (end 0 -1.27)
          (stroke (width 0) (type default))
          (fill (type none))
        )
        (arc (start 0 -1.27) (mid 0.6323 -0.635) (end 0 0)
          (stroke (width 0) (type default))
          (fill (type none))
        )
        (arc (start 0 0) (mid 0.6323 0.635) (end 0 1.27)
          (stroke (width 0) (type default))
          (fill (type none))
        )
        (arc (start 0 1.27) (mid 0.6323 1.905) (end 0 2.54)
          (stroke (width 0) (type default))
          (fill (type none))
        )
      )
      (symbol "L_1_1"
        (pin passive line (at 0 3.81 270) (length 1.27)
          (name "1" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 1.27)
          (name "2" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:R" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
      (property "Reference" "R" (at 2.032 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "R" (at 0 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (at -1.778 0 90)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "~" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "R res resistor" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Resistor" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "R_*" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "R_0_1"
        (rectangle (start -1.016 -2.54) (end 1.016 2.54)
          (stroke (width 0.254) (type default))
          (fill (type none))
        )
      )
      (symbol "R_1_1"
        (pin passive line (at 0 3.81 270) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 0 -3.81 90) (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Regulator_Switching:TLV62569DBV" (in_bom yes) (on_board yes)
      (property "Reference" "U" (at -5.08 6.35 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Value" "TLV62569DBV" (at 0 6.35 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "Package_TO_SOT_SMD:SOT-23-5" (at 1.27 -6.35 0)
        (effects (font (size 1.27 1.27) italic) (justify left) hide)
      )
      (property "Datasheet" "http://www.ti.com/lit/ds/symlink/tlv62569.pdf" (at -6.35 11.43 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "Step-Down Buck DC-DC Regulator Adjustable" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "High Efficiency Synchronous Buck Converter, Adjustable Output 0.6V-5.5V, 2A, SOT-23-5" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "SOT?23*" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "TLV62569DBV_0_1"
        (rectangle (start -5.08 5.08) (end 5.08 -5.08)
          (stroke (width 0.254) (type default))
          (fill (type background))
        )
      )
      (symbol "TLV62569DBV_1_1"
        (pin input line (at -7.62 0 0) (length 2.54)
          (name "EN" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin power_in line (at 0 -7.62 90) (length 2.54)
          (name "GND" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
        (pin power_out line (at 7.62 2.54 180) (length 2.54)
          (name "SW" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))
        )
        (pin power_in line (at -7.62 2.54 0) (length 2.54)
          (name "VIN" (effects (font (size 1.27 1.27))))
          (number "4" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at 7.62 0 180) (length 2.54)
          (name "FB" (effects (font (size 1.27 1.27))))
          (number "5" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "power:GND" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
      (property "Reference" "#PWR" (at 0 -6.35 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Value" "GND" (at 0 -3.81 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "global power" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "GND_0_1"
        (polyline
          (pts
            (xy 0 0)
            (xy 0 -1.27)
            (xy 1.27 -1.27)
            (xy 0 -2.54)
            (xy -1.27 -1.27)
            (xy 0 -1.27)
          )
          (stroke (width 0) (type default))
          (fill (type none))
        )
      )
      (symbol "GND_1_1"
        (pin power_in line (at 0 0 270) (length 0) hide
          (name "GND" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
      )
    )
  )

  (junction (at 152.4 59.69) (diameter 0) (color 0 0 0 0)
    (uuid 65756647-8944-4d58-919a-c24e7d1292d2)
  )
  (junction (at 152.4 49.53) (diameter 0) (color 0 0 0 0)
    (uuid 9272e86b-e552-4a3e-9c85-943feb25d7ef)
  )
  (junction (at 114.3 52.07) (diameter 0) (color 0 0 0 0)
    (uuid da96e588-951d-4260-b769-ec0ce433a04e)
  )
  (junction (at 129.54 69.85) (diameter 0) (color 0 0 0 0)
    (uuid e001deee-08aa-4c1f-b572-f45372aafa8b)
  )
  (junction (at 152.4 69.85) (diameter 0) (color 0 0 0 0)
    (uuid e250dead-6af1-4552-871b-99a118394d51)
  )
  (junction (at 114.3 69.85) (diameter 0) (color 0 0 0 0)
    (uuid fde91381-5894-475c-9c53-bf22d109ce8e)
  )

  (wire (pts (xy 114.3 60.96) (xy 114.3 69.85))
    (stroke (width 0) (type default))
    (uuid 0e702fec-56f9-4bd1-9b04-980b27c1da9a)
  )
  (wire (pts (xy 142.24 59.69) (xy 142.24 52.07))
    (stroke (width 0) (type default))
    (uuid 137cf519-a0a3-493d-a155-3118c44922c1)
  )
  (wire (pts (xy 152.4 68.58) (xy 152.4 69.85))
    (stroke (width 0) (type default))
    (uuid 2c4151c8-8379-4bb7-9c6d-8c0349341494)
  )
  (wire (pts (xy 152.4 59.69) (xy 152.4 60.96))
    (stroke (width 0) (type default))
    (uuid 3af3f5cd-5f63-4ece-87ba-29a3406614fb)
  )
  (wire (pts (xy 114.3 52.07) (xy 114.3 53.34))
    (stroke (width 0) (type default))
    (uuid 41d60f36-3f11-4395-94e5-ab8fa2e234ee)
  )
  (wire (pts (xy 161.29 69.85) (xy 161.29 63.5))
    (stroke (width 0) (type default))
    (uuid 551b3b0e-300d-44ef-9558-ed2af93e9731)
  )
  (wire (pts (xy 137.16 49.53) (xy 142.24 49.53))
    (stroke (width 0) (type default))
    (uuid 61446ed8-fec8-4ac2-b579-d0dbb80fc6a4)
  )
  (wire (pts (xy 114.3 52.07) (xy 121.92 52.07))
    (stroke (width 0) (type default))
    (uuid 66132ca2-c679-4285-8e07-8f3ad7ae6c4e)
  )
  (wire (pts (xy 114.3 69.85) (xy 129.54 69.85))
    (stroke (width 0) (type default))
    (uuid 6d825189-dad5-4921-b7e8-ff107c845a6a)
  )
  (wire (pts (xy 142.24 59.69) (xy 152.4 59.69))
    (stroke (width 0) (type default))
    (uuid 715394c5-4532-4d6a-a7c5-36c7bce4d4ed)
  )
  (wire (pts (xy 149.86 49.53) (xy 152.4 49.53))
    (stroke (width 0) (type default))
    (uuid 71aef283-d507-49e2-91dd-478401d0a86b)
  )
  (wire (pts (xy 114.3 49.53) (xy 114.3 52.07))
    (stroke (width 0) (type default))
    (uuid 7228bf22-e6b2-4ccd-966b-8a82a2694970)
  )
  (wire (pts (xy 161.29 49.53) (xy 161.29 55.88))
    (stroke (width 0) (type default))
    (uuid 727dc145-359d-485e-b941-97e83791b577)
  )
  (wire (pts (xy 129.54 59.69) (xy 129.54 69.85))
    (stroke (width 0) (type default))
    (uuid a6b16328-a2cc-487f-be16-b5ce7669650e)
  )
  (wire (pts (xy 152.4 49.53) (xy 161.29 49.53))
    (stroke (width 0) (type default))
    (uuid b4b815eb-5094-4e2d-b8f2-e5c9cdbbfc33)
  )
  (wire (pts (xy 152.4 69.85) (xy 129.54 69.85))
    (stroke (width 0) (type default))
    (uuid baa11169-094b-46ae-ac3f-0bb361d5f1c5)
  )
  (wire (pts (xy 121.92 49.53) (xy 114.3 49.53))
    (stroke (width 0) (type default))
    (uuid c3a72421-87b5-4e56-b23a-2695a42cdc11)
  )
  (wire (pts (xy 152.4 49.53) (xy 152.4 50.8))
    (stroke (width 0) (type default))
    (uuid d15c06d6-bb6a-4e78-bba1-12bb8eea52fd)
  )
  (wire (pts (xy 142.24 52.07) (xy 137.16 52.07))
    (stroke (width 0) (type default))
    (uuid d57b6c0d-4c7c-487a-8f39-1b3e9d94d259)
  )
  (wire (pts (xy 152.4 69.85) (xy 161.29 69.85))
    (stroke (width 0) (type default))
    (uuid d834219f-a2cb-4263-a049-9a4217712d2e)
  )
  (wire (pts (xy 152.4 58.42) (xy 152.4 59.69))
    (stroke (width 0) (type default))
    (uuid ee6e130e-d85e-4969-ae06-7cd73e8b3ec0)
  )

  (label "FB" (at 137.16 52.07 0) (fields_autoplaced)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid 06b8ca3e-322f-4a20-80a6-ace56e7a995a)
  )
  (label "Vin" (at 114.3 49.53 180) (fields_autoplaced)
    (effects (font (size 1.27 1.27)) (justify right bottom))
    (uuid f2166feb-3a2a-49b8-9be5-dd3603127a97)
  )
  (label "SW" (at 137.16 49.53 0) (fields_autoplaced)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid f6ebfa4c-1a92-4e3f-ba2d-e62b369bad0f)
  )
  (label "Vout" (at 161.29 49.53 0) (fields_autoplaced)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid fa71946b-56f1-48c1-a0f9-a36da3783952)
  )

  (symbol (lib_id "Device:C") (at 114.3 57.15 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no)
    (uuid 170c4b41-4990-467c-92c0-e57dd9ec757e)
    (property "Reference" "C1" (at 115.57 54.61 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "4.7u" (at 115.57 59.69 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Capacitor_SMD:C_0402_1005Metric" (at 115.2652 60.96 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (at 114.3 57.15 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 0c56dbea-9a41-4ab4-8edf-569d97a1602a))
    (pin "2" (uuid 7f37c3e9-f402-4030-ba90-90e2c1c5976a))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "C1") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "Device:R") (at 152.4 64.77 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced)
    (uuid 53082a84-8bc8-4cf9-9392-c206cd17b7e9)
    (property "Reference" "R2" (at 154.94 63.5 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "100k" (at 154.94 66.04 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (at 150.622 64.77 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (at 152.4 64.77 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 1158612c-987e-4c4b-b6e0-20e6026130a3))
    (pin "2" (uuid 06d3fb33-13fb-41fb-9190-fb789de10cbf))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "R2") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "Device:L") (at 146.05 49.53 270) (unit 1)
    (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced)
    (uuid 6e562cce-08e9-407b-ab84-af2dae0cbdf4)
    (property "Reference" "L1" (at 146.05 44.45 90)
      (effects (font (size 1.27 1.27)))
    )
    (property "Value" "2.2u" (at 146.05 46.99 90)
      (effects (font (size 1.27 1.27)))
    )
    (property "Footprint" "Inductor_SMD:L_Chilisin_BMRB00050518-B" (at 146.05 49.53 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (at 146.05 49.53 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 64e5c928-5d59-45a0-9ca3-ba14e1d4d6c6))
    (pin "2" (uuid ae95e004-ce72-4f07-bafe-071b76bd12e4))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "L1") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "Device:C") (at 161.29 59.69 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no)
    (uuid a8a16828-02bb-4214-94cb-62aee6d5795c)
    (property "Reference" "C2" (at 162.56 57.15 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "10u" (at 162.56 62.23 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Capacitor_SMD:C_0402_1005Metric" (at 162.2552 63.5 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (at 161.29 59.69 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 2d54c77f-e6cd-45db-9bc6-06f20da3802a))
    (pin "2" (uuid 2c9feca5-4ca0-4ded-90d7-fdb5ed0e354f))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "C2") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "power:GND") (at 114.3 69.85 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced)
    (uuid ce0fa253-43a2-432a-9673-687a98795de9)
    (property "Reference" "#PWR01" (at 114.3 76.2 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Value" "GND" (at 114.3 74.93 0)
      (effects (font (size 1.27 1.27)))
    )
    (property "Footprint" "" (at 114.3 69.85 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "" (at 114.3 69.85 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 9b0ece20-a078-4477-826c-f4a2d5893211))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "#PWR01") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "Regulator_Switching:TLV62569DBV") (at 129.54 52.07 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced)
    (uuid f6969aaa-8b14-4346-8677-287d75d9927d)
    (property "Reference" "U2" (at 129.54 41.91 0)
      (effects (font (size 1.27 1.27)))
    )
    (property "Value" "TLV62569DBV" (at 129.54 44.45 0)
      (effects (font (size 1.27 1.27)))
    )
    (property "Footprint" "Package_TO_SOT_SMD:SOT-23-5" (at 130.81 58.42 0)
      (effects (font (size 1.27 1.27) italic) (justify left) hide)
    )
    (property "Datasheet" "http://www.ti.com/lit/ds/symlink/tlv62569.pdf" (at 123.19 40.64 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 01ef8c1c-a32a-431e-84ff-1b89ebb720c6))
    (pin "2" (uuid f69522b3-f0ce-495a-bcdf-ace1b079ef96))
    (pin "3" (uuid 0e416d4a-0487-4a84-82aa-cf4fd7cfa8d2))
    (pin "4" (uuid 91f7df6f-83f6-4e05-9d88-2f8f102356f1))
    (pin "5" (uuid ab11f852-6c3d-43a4-bb46-afd84cf4bb23))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "U2") (unit 1)
        )
      )
    )
  )

  (symbol (lib_id "Device:R") (at 152.4 54.61 0) (unit 1)
    (in_bom yes) (on_board yes) (dnp no) (fields_autoplaced)
    (uuid fd623e5d-e6ac-417f-bf41-8c4ae6bd8556)
    (property "Reference" "R1" (at 154.94 53.34 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "453k" (at 154.94 55.88 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (at 150.622 54.61 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (at 152.4 54.61 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 624a1bb2-cb7b-41e8-ba03-77b3c14ed5b9))
    (pin "2" (uuid 173901aa-720f-452a-88fb-cb4f68985551))
    (instances
      (project "test_project"
        (path "/dfd5ca46-a59a-4502-8a63-d751b78779b6"
          (reference "R1") (unit 1)
        )
      )
    )
  )

  (sheet_instances
    (path "/" (page "1"))
  )
)