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SCM1738ASA - Mornsun Power

Description: High PrecisionCC/CVPrimary Side Power SwitchwithIntegrated MOSFET

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SCM1738ASA - Mornsun Power - PCB symbol
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PCB Footprints
SCM1738ASA - Mornsun Power PCB footprint - Other - Other - SOP-7
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SCM1738ASA Details

  • Manufacturer Part Number:

    SCM1738ASA

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOP-7

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    MORNSUN

  • YTEOL:

    6.5

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LOAD SWITCH

  • JESD-30 Code:

    R-PDSO-G7

  • Length:

    4.9 mm

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    7

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP7,.24

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Seated Height-Max:

    1.8 mm

  • Supply Voltage-Max (Vsup):

    26 V

  • Supply Voltage-Min (Vsup):

    10 V

  • Supply Voltage-Nom (Vsup):

    18 V

  • Surface Mount:

    YES

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Threshold Voltage-Nom:

    +0.58V

  • Width:

    3.9 mm

SCM1738ASA Frequently Asked Questions (FAQs)

  • MORNSUN recommends a PCB layout with a large copper area connected to the GND pin to dissipate heat. A minimum of 1 oz copper thickness is recommended. Additionally, keeping the PCB layout compact and avoiding thermal vias under the device can help improve thermal performance.
  • To ensure reliable start-up, MORNSUN recommends a soft-start circuit to limit the inrush current. A capacitor with a value between 10nF to 100nF can be connected between the VIN pin and GND pin to filter out noise and reduce the inrush current.
  • The maximum allowed capacitance on the output of the SCM1738ASA is 47uF. Exceeding this value may cause instability or oscillation in the converter. MORNSUN recommends using a capacitor with a low ESR (Equivalent Series Resistance) to minimize the risk of oscillation.
  • MORNSUN recommends using a TVS (Transient Voltage Suppressor) diode or a varistor in parallel with the input capacitor to protect the converter from input voltage transients. The TVS diode or varistor should be selected based on the maximum expected transient voltage and the input voltage rating of the converter.
  • MORNSUN recommends using a low-ESR ceramic capacitor or a film capacitor with a value between 10uF to 22uF as the input capacitor. The capacitor should be selected based on the input voltage rating, ripple current, and ESR requirements of the application.

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SCM1738ASA Overview

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