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NCP1521BSNT1G - onsemi

Description: 96% efficiency, 30 uA quiescent current, 0.3 uA shutdown current; 1.5 MHz switching frequency; Auto-switching between PWM and PFM mode at light load conditions; Adjustable output voltage from 0.9V to 3.3V; Best in class Low Ripple even in PFM mode

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Symbol
NCP1521BSNT1G - onsemi - PCB symbol
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PCB Footprints
NCP1521BSNT1G - onsemi PCB footprint - SOT23 (5-Pin) - SOT23 (5-Pin) - TSOP-5 CASE 483-02
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3D Models
NCP1521BSNT1G - onsemi - 3D model - SOT23 (5-Pin) - TSOP-5 CASE 483-02
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NCP1521BSNT1G Details

  • Manufacturer Part Number:

    NCP1521BSNT1G

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSOP-5

  • Pin Count:

    5

  • Manufacturer Package Code:

    483

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    2.7 V

  • Input Voltage-Nom:

    3.6 V

  • JESD-30 Code:

    R-PDSO-G5

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    5

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Voltage-Max:

    3.9 V

  • Output Voltage-Min:

    0.9 V

  • Output Voltage-Nom:

    1.2 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSOP

  • Package Equivalence Code:

    TSOP5,.11,37

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.1 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    1800 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.95 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    1.5 mm

NCP1521BSNT1G Frequently Asked Questions (FAQs)

  • A good PCB layout for the NCP1521BSNT1G should include a solid ground plane, separate analog and digital grounds, and a decoupling capacitor (e.g., 10uF) between VIN and GND. Additionally, keep the input and output capacitors close to the IC and use short, wide traces for the power lines.
  • Choose X5R or X7R ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. For the input capacitor, a value of 10uF to 22uF is recommended. For the output capacitor, a value of 10uF to 47uF is recommended. Ensure the capacitors are placed close to the IC and have a low ESR.
  • The NCP1521BSNT1G is rated for operation from -40°C to +125°C. However, the maximum ambient temperature range depends on the specific application and the device's power dissipation. Ensure the device is properly heat-sinked and the ambient temperature is within the recommended range to ensure reliable operation.
  • To ensure stability, follow the recommended PCB layout, use a sufficient output capacitor, and ensure the input voltage is within the recommended range. Additionally, avoid using long, thin traces for the power lines, and keep the input and output capacitors close to the IC. If oscillation occurs, try adding a small capacitor (e.g., 10nF) between the FB pin and GND.
  • The NCP1521BSNT1G can operate with an input voltage as low as 2.5V. However, the minimum input voltage required for proper operation depends on the output voltage and load current. Ensure the input voltage is sufficient to support the required output voltage and current.

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NCP1521BSNT1G Overview

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