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AST1S31HF - STMicroelectronics

Description: Up to 4 V, 3 A step-down 2.3 MHz switching regulator for automotive applications

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AST1S31HF - STMicroelectronics PCB footprint - Small Outline No-lead - Small Outline No-lead - VFDFPN8 (3 x 3 x 1.0 mm) package mechanical data
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AST1S31HF - STMicroelectronics  - 3D model - Small Outline No-lead - VFDFPN8 (3 x 3 x 1.0 mm) package mechanical data
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AST1S31HF Details

  • Manufacturer Part Number:

    AST1S31HF

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    VFDFPN-8

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    16 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    8

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    4 V

  • Input Voltage-Min:

    2.8 V

  • JESD-30 Code:

    S-PDSO-N8

  • JESD-609 Code:

    e4

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3 A

  • Output Voltage-Max:

    4 V

  • Output Voltage-Min:

    0.8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVSON

  • Package Equivalence Code:

    SOLCC8,.12,25

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Screening Level:

    AEC-Q100

  • Seated Height-Max:

    1 mm

  • Supply Current-Max (Isup):

    6000 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    2500 kHz

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

AST1S31HF Frequently Asked Questions (FAQs)

  • The recommended crystal oscillator frequency for the AST1S31HF is 32.768 kHz, which is a standard frequency for real-time clocks.
  • To ensure the accuracy of the internal clock, it is recommended to use a high-quality crystal oscillator and to follow the recommended layout and routing guidelines for the oscillator circuit.
  • The maximum operating temperature range for the AST1S31HF is -40°C to 85°C, making it suitable for use in a wide range of applications.
  • Yes, the AST1S31HF is suitable for use in battery-powered devices due to its low power consumption and ability to operate from a single 1.8V to 5.5V power supply.
  • The AST1S31HF can be interfaced with a microcontroller using a serial interface such as I2C or SPI, depending on the specific requirements of the application.

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AST1S31HF Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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