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- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for FDLL4448
- Part Number FDLL4448
- Manufacturer onsemi
- Pin Count 2
- Part Category Diode
- Package Category Other
- Last Modified Date May 5, 2026 9:00 AM UTC
- Pinout / Pin List Click Here (Member Only)
FDLL4448 Details
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Manufacturer Part Number:
FDLL4448
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Brand Name:
onsemi
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Pbfree Code:
Yes
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Rohs Code:
Yes
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Part Life Cycle Code:
Active
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Part Package Code:
MiniMELF / SOD-80
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Manufacturer Package Code:
100AD
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Country Of Origin:
Mainland China
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ECCN Code:
EAR99
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HTS Code:
8541.10.00.70
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Factory Lead Time:
22 Weeks
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Manufacturer:
onsemi
FDLL4448 Frequently Asked Questions (FAQs)
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A good PCB layout for the FDLL4448 involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing decoupling capacitors close to the device. Additionally, it's recommended to use a shielded inductor and to keep the switching node (pin 5) away from sensitive nodes.
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The inductor value depends on the input voltage, output voltage, and switching frequency. A good starting point is to use the inductor value recommended in the datasheet (e.g., 1.5 μH). Then, adjust the value based on the specific application requirements, such as output current and ripple voltage.
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The maximum output current of the FDLL4448 depends on the input voltage, output voltage, and inductor value. Typically, the device can deliver up to 2 A of output current. However, it's essential to check the thermal performance and ensure the device is operated within the recommended operating conditions.
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To ensure stability, it's crucial to follow the recommended PCB layout, use a suitable inductor value, and add decoupling capacitors. Additionally, ensure the input and output capacitors are of high quality and have low ESR. It's also recommended to add a small capacitor (e.g., 10 nF) between the output and ground to improve stability.
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The EN pin is used to enable or disable the device. When the EN pin is high, the device is enabled, and when it's low, the device is disabled. This pin can be used to implement power sequencing, shutdown, or low-power modes in the system.
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FDLL4448 Overview
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