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- Part Number UC2844AQD8
- Manufacturer Texas Instruments
- Pin Count 8
- Part Category Integrated Circuit
- Package Category Small Outline Packages
- Footprint Name Small Outline Packages - D
- Released Date Oct 16, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
UC2844AQD8 Details
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Manufacturer Part Number:
UC2844AQD8
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Brand Name:
Texas Instruments
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Rohs Code:
Yes
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Part Life Cycle Code:
Obsolete
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Part Package Code:
SOIC
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Pin Count:
8
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Country Of Origin:
Malaysia
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ECCN Code:
EAR99
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HTS Code:
8542.39.00.60
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Manufacturer:
Texas Instruments
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YTEOL:
0
UC2844AQD8 Frequently Asked Questions (FAQs)
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The UC2844AQD8 is a high-frequency switching regulator, and proper PCB layout is crucial for its operation. TI recommends a multi-layer PCB with a solid ground plane, and the use of vias to connect the top and bottom layers. The input and output capacitors should be placed close to the IC, and the feedback resistors should be placed close to the FB pin. A good layout will help reduce EMI and improve the overall performance of the converter.
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The choice of inductor depends on the specific application and the desired performance. TI recommends using an inductor with a high saturation current rating, low DC resistance, and a high self-resonant frequency. The inductor value should be chosen based on the output voltage, output current, and switching frequency. A good starting point is to use an inductor with a value between 10uH to 22uH, and then adjust based on the specific application requirements.
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The UC2844AQD8 has an absolute maximum input voltage rating of 18V. However, the recommended maximum input voltage is 15V to ensure reliable operation and to prevent damage to the internal components. Exceeding the maximum input voltage can cause damage to the IC and affect its reliability.
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The UC2844AQD8 requires a compensation network to ensure stability. TI recommends using a type-III compensation network, which consists of a series resistor and capacitor connected to the COMP pin. The values of the resistor and capacitor depend on the specific application and the desired performance. A good starting point is to use a 1kΩ resistor and a 10nF capacitor, and then adjust based on the specific application requirements.
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The UC2844AQD8 is capable of delivering up to 4A of output current. However, the actual output current depends on the input voltage, output voltage, and the inductor value. TI recommends derating the output current based on the ambient temperature and the desired reliability. A good rule of thumb is to derate the output current by 10% for every 10°C increase in ambient temperature above 25°C.
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UC2844AQD8 Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.