LM317AHVT

LM317AHVT is a linear voltage regulator that provides positive adjustable regulation with its three-terminal design
7,073 Effective Inventory

LM317AHVT

Effective Inventory7,073

LM317AHVT is a linear voltage regulator that provides positive adjustable regulation with its three-terminal design

  • Manufacturer Part # : LM317AHVT

  • Package/Case: TO-220-3

  • Brand: Onsemi

  • Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

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LM317AHVT DataSheet
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Details

The LM317AHVT voltage regulator also offers flexibility through the use of external resistors, allowing users to precisely adjust the output voltage as per their specific requirements. Its consistent performance in the face of varying input voltages and load conditions further demonstrates its reliability, making it an ideal choice for demanding operating environments

LM317AHVT

Key Features

  • The LM317AHVT is a 3-terminal adjustable voltage regulator capable of outputting up to 1
  • 5A of current
  • It offers a wide input voltage range, adjustable output voltage, and thermal overload protection
  • Its features include a reference voltage of 1
  • 25V, low dropout voltage, and the ability to operate as a current regulator or constant current source

    • Application

    • LM317AHVT for instrumentation
    • Reliable in all conditions
    • Ensures stable power supply

    Specifications

    The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

    Status Obsolete CAD Models
    Compliance PbAHP Package Type TO-220-3
    Case Outline 340AT MSL Type NA
    MSL Temp (°C) 0 Container Type TUBE
    Container Qty. 1000 ON Target N
    Output Single Polarity Positive
    VO (V) Adjustable IO Typ (A) 1.5
    VI Min (V) 2.8 VI Max (V) 60
    PSRR (dB) 75 Enable No
    PowerGood No Application Industrial
    Pricing ($/Unit) Price N/A

    Datasheet PDF

    Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

    Preliminary Specification LM317AHVT PDF Download

    FAQs

    What is LM317AHVT?

    The LM317AHVT is a high voltage adjustable positive voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It is an upgraded version of the popular LM317 voltage regulator, capable of operating at higher input voltages. The LM317AHVT provides a regulated output voltage that can be adjusted through an external resistor, making it suitable for a wide range of applications requiring precise voltage regulation.

    How Does LM317AHVT Work?

    The LM317AHVT works by using an internal voltage reference and a feedback loop to maintain a constant output voltage, regardless of changes in input voltage or load current. By adjusting the resistance of an external resistor connected to the ADJ pin, the output voltage can be set to the desired level within the specified range. The IC can handle higher input voltages compared to the standard LM317, making it suitable for high voltage applications.

    How Many Pins does LM317AHVT have and What are the Functions of the Pinout Configuration?

    The LM317AHVT is housed in a 3-pin TO-220 package. The pinout configuration includes:

    • INPUT (VIN): The input pin through which the unregulated voltage is supplied.
    • ADJUST (ADJ): The adjustable pin connected to an external resistor to set the output voltage.
    • OUTPUT (VOUT): The regulated output pin that provides the desired voltage to the load.

    What are the Pros and Cons of LM317AHVT?

    Pros:

    • High Voltage Operation: Capable of handling higher input voltages compared to the standard LM317, making it suitable for high voltage applications.
    • Adjustable Output: Provides a regulated output voltage that can be adjusted to the desired level with an external resistor.
    • Thermal Shutdown: Includes built-in thermal shutdown protection to prevent damage due to excessive heat.
    • Overload Protection: Offers overload and short-circuit protection for added reliability.

    Cons:

    • Heat Dissipation: May require additional heat sinking for high power applications to dissipate heat effectively.
    • Dropout Voltage: Has a relatively higher dropout voltage compared to low dropout (LDO) regulators, impacting efficiency in low input voltage scenarios.
    • No Enable Pin: Lacks an enable pin for external on/off control, which may be a consideration in certain designs.

    Are There Any Equivalents/Alternatives to LM317AHVT for Recommendation?

    • The LM350 from Texas Instruments is a higher current counterpart to the LM317AHVT, suitable for applications requiring higher output currents.
    • Alternatives to the LM317AHVT include the L200 from STMicroelectronics and the LT1086 from Analog Devices.

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