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R2221L-E2 - Nisshinbo

Description: 2-wire Serial Interface Real Time Clock IC

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PCB Footprints
R2221L-E2 - Nisshinbo PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - R2221L-E2
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3D Models
R2221L-E2 - Nisshinbo  - 3D model - Quad Flat No-Lead - R2221L-E2
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R2221L-E2 Details

  • Manufacturer Part Number:

    R2221L-E2

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-12

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    12 Weeks

  • Manufacturer:

    Nisshinbo Micro Devices

  • YTEOL:

    7

  • Clock Frequency-Max:

    0.032 MHz

  • Information Access Method:

    SERIAL(I2C), SERIAL, 2-WIRE

  • Interrupt Capability:

    Y

  • JESD-30 Code:

    S-PQCC-N12

  • Length:

    1.8 mm

  • Number of Terminals:

    12

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC12,.08SQ,16

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.43 mm

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    1.5 V

  • Supply Voltage-Nom:

    3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.4 mm

  • Terminal Position:

    QUAD

  • Time-Min:

    SECONDS

  • Volatile:

    NO

  • Width:

    1.8 mm

  • uPs/uCs/Peripheral ICs Type:

    TIMER, REAL TIME CLOCK

R2221L-E2 Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output traces short and away from each other to minimize noise and EMI.
  • Use a thermally conductive material for the PCB and ensure good airflow around the device. Also, consider using a heat sink or thermal pad to dissipate heat, especially in high-power applications.
  • The maximum allowable voltage on the enable pin (EN) is 6V. Exceeding this voltage may damage the device.
  • Yes, the R2221L-E2 can be used in switching regulator applications, but ensure that the device is properly bypassed and decoupled to minimize noise and EMI.
  • Use a soft-start circuit or a current-limiting resistor to limit the inrush current during startup. This will help prevent damage to the device and reduce electromagnetic interference (EMI).

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R2221L-E2 Overview

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