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LM28903DR - Brand New Texas Instruments IC Chips

In Stock:93 ,Ready for Immediate Shipping
New RoSH Lead free
In Stock: 93, Ready for Immediate Shipping
Category:IC Chips
Chipdatas Part No.:CD92-LM28903DR
Manufacturer Part No.:LM28903DR
Datecode:09+
Package:SOP
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  • Description

    The LM28903DR is a PWM DC/DC buck (step-down) regulator that falls under the category of IC Chips. It is a product by National-Semiconductor. With an input range of 4.5V-42V, this regulator is suitable for a wide range of power conditioning applications. It features a low RDSON internal switch for maximum efficiency and has a fixed operating frequency of either 550 kHz or 1.25 MHz. The LM28903DR also includes additional features like thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. It comes in a low profile TSOT-6L package.

    Specifications and features

    General Description: The LM28903DR is a PWM DC/DC buck (step-down) regulator suitable for power conditioning applications. It has an input range of 4.5V-42V and features a low RDSON internal switch for maximum efficiency. The operating frequency is fixed at either 550 kHz or 1.25 MHz. Additional features include thermal shutdown, VIN under-voltage lockout, and gate drive under-voltage lockout. It comes in a low profile TSOT-6L package.

    Features: - Input voltage range of 4.5V to 42V - Output current options of 300 mA and 600 mA - Feedback pin voltage of 0.765V - 550 kHz (X) or 1.25 Mhz (Y) switching frequency - Low shutdown IQ, 16 µA typical - Short circuit protected - Internally compensated - Soft-start circuitry - Small overall solution size (TSOT-6L package)

    Application Scenarios

    The LM28903DR is suitable for the following application scenarios:

    - Battery powered equipment - Industrial distributed power applications - Portable media players - Portable handheld instruments

    Comparison

    Advantages

    - Wide input voltage range - Low RDSON internal switch for maximum efficiency - Additional features like thermal shutdown and VIN under-voltage lockout

    Disadvantages

    - Limited output current options

  • Similar parts: 430483 , Click to view
    Attributes Value
    Category IC Chips
    Manufacturer Texas Instruments
    Product Category IC Chips
  • Latest 5 Reviews
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  • Shopping guide

    Warranty:
    • - 30-day money-back return policy,
    • - 90-day warranty against any manufacturing defects. View more
    Returning:
    Within 30 days from date of shipment. View more

    Delivery period:
    • - Will ship out in 2-3 days
    • - DHL Express: 3-7 business days
    • - DHL eCommerce: 12-22 business days
    • - FedEx International Priority: 3-7 business days
    • - EMS: 10-15 business days
    Shipping fee:
    • - Automatic Email notification (above 5 times)
    • - View in your order page
    Shipping option:
    DHL, FedEx, EMS, SF Express, and Registered Air Mail
    Shipping tracking:
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    • - View in your order page
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    How to Buy:
    • - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
    • - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
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    • - Wire transfer, include Local bank transfer.
    • - Western Union.
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Contact us
Additional Information
  • Datasheet: Download LM28903DR
  • Chipdatas Part: CD92-LM28903DR
  • Warehouse: China, Hong Kong
  • Dispatch: Within 24 hours
  • Free Shipping: Yes
  • Prority Shipping: Yes, 3-5 days
  • Last Updated: 2024/07/22 15:33 +0800
Refund
    • Full Refund if you don't receive your order
    • Full or Partial Refund , If the item is not as described
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  • The fee is charged according to the rule of PayPal.
  • Western Union charge US$0.00 banking fee.
  • We recommend to use bank transfer for large orders to save on handling fees.
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