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BD45271G-TR - ROHM Semiconductor

Description: Supervisory Circuits VOLTAGE DETECTOR

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BD45271G-TR - ROHM Semiconductor - PCB symbol
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PCB Footprints
BD45271G-TR - ROHM Semiconductor PCB footprint - SOT23 (5-Pin) - SOT23 (5-Pin) - SSOP5_1
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3D Models
BD45271G-TR - ROHM Semiconductor - 3D model - SOT23 (5-Pin) - SSOP5_1
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BD45271G-TR Details

  • Manufacturer Part Number:

    BD45271G-TR

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SSOP

  • Pin Count:

    5

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    ROHM Semiconductor

  • YTEOL:

    0

  • Additional Feature:

    MNL RST:N;PW FL IO:N;PRG RST DLY:N;WD:N;WDO:N;WWD:N

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    VOLTAGE SUPERVISOR/RESET IC

  • JESD-30 Code:

    R-PDSO-G5

  • Length:

    2.9 mm

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    5

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    LSSOP

  • Package Equivalence Code:

    TSOP5/6,.11,37

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, LOW PROFILE, SHRINK PITCH

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.25 mm

  • Supply Current-Max (Isup):

    0.00255 mA

  • Supply Voltage-Min (Vsup):

    0.95 V

  • Supply Voltage-Nom (Vsup):

    4.7 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.95 mm

  • Terminal Position:

    DUAL

  • Threshold Voltage-Nom:

    +2.7V

  • Width:

    1.6 mm

BD45271G-TR Frequently Asked Questions (FAQs)

  • A good PCB layout for the BD45271G-TR should include a solid ground plane, wide power traces, and a thermal relief pattern under the IC to facilitate heat dissipation. ROHM provides a recommended PCB layout in their application notes.
  • To ensure stable operation with a high-ESR output capacitor, it's recommended to add a 1-10nF ceramic capacitor in parallel with the output capacitor to reduce the ESR. Additionally, the output capacitor should be placed close to the IC to minimize parasitic inductance.
  • The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the IC. It's recommended to use a voltage divider or a level shifter if the enable signal is from a higher voltage domain.
  • The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency. ROHM provides a detailed calculation method in their application notes.
  • A low-ESR ceramic capacitor with a value of 4.7-10uF is recommended for the input capacitor. The capacitor should be placed close to the IC to minimize parasitic inductance.

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BD45271G-TR Overview

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BD45271G-TR Alternates

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Part Image BD45271G ROHM Semiconductor

Voltage Supervisor/Reset IC, Fixed, 1 Channel, +2.7V, CMOS, PDSO5