• Electronic standard parts : Wireless

    05/11/2019 at 16:21 0 comments

    RFID

    125kHz

    13.56MHz

  • Electronic standard parts : Power Supplies

    03/07/2019 at 19:22 0 comments

    DC DC Converters Board Mount

    DeviceSpecificationsSources
    Buck converter module
    Input voltage : 4.5V - 28V
    Output voltage : 0.8 - 20V
    Output current : 3A
    Efficiency : 92%
    Switching frequency : 1MHz - 1.5MHz
    Operating temperature : -20°C - +85°C
    Size : 22 x 17 x 4 mm
    WAVGAT XM1584

    Driver IC : MP1584
    Boost converter module
    Input voltage : 2-24V
    Output voltage : 2-28V
    Output current : 2A
    Efficiency : 95%
    Switching frequency : 1.2MHz
    Remark: high components, easily broken
    Size : 23 x 17 mm
    HWA YEH SX1308

    Driver IC : SX1308,
    pin compatible to MPS MP3221
    Boost converter moduleInput voltage : 2-24V
    Output voltage : 2-28V
    Output current : 2A
    Efficiency : 93%
    Size: 30 x 17 x 14 mm
    AliEpress 32851687094
    Driver IC : MT3608
    Boost converter IC
    Input voltage : 0.8 to 5.5V
    Output voltage : 2 to 5.5V
    Output current : 350mA
    EN = active high
    * True output disconnect (1µA leakage):
    MCP1640 & MCP1640B
    not MCP1640C or D
    * MP3120 compatible to AAT1217
    Buck boost converter module
    Input voltage : 1.5-6.5V
    Output voltage : 3V3
    Output current :
    * 1.5VIN -> 150mA
    * 3.7VIN -> TBD
    * 6.5VIN -> >3.0A
    Evaluation
    AliExpress 32757272432
    Driver IC : MicrOne ME2149
    Buck boost converter module
    Input voltage : 3-15V
    Output voltage : 3V3
    Output current : ?
    AliExpress 32892547111

    Load switches

    If the MCP1640 consumes too much current to your mind (1000nA), then you can add a load switch.  The TCK106AF,LF, TCK108AF,LF and TPS22917DBVR are excellent low power switches.

    Battery products

    TP4056 module

    • TP4056 module
    • TP4056 datasheet
    • 1A charge current, set by R3
    • GREAT WALL Electronics Co., Ltd.
    • €0.28
    • pin 7: ON = charging (LED closest to USB connector
    • pin 6: ON = charging finished