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PCB Footprints
- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for UC3825Q
- Part Number UC3825Q
- Manufacturer Texas Instruments
- Pin Count 20
- Part Category Integrated Circuit
- Package Category Plastic Leaded Chip Carrier
- Footprint Name Plastic Leaded Chip Carrier - FN (S-PQCC-J20)
- Released Date Jan 2, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
UC3825Q Details
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Manufacturer Part Number:
UC3825Q
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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:
QLCC
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Package Description:
LCC-20
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Pin Count:
20
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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
UC3825Q Frequently Asked Questions (FAQs)
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The UC3825Q is a high-frequency device, and proper layout and placement are crucial for its operation. TI recommends a 4-layer PCB with a solid ground plane, and the IC should be placed close to the input capacitors. The output stage should be kept away from the input stage to minimize noise coupling. A good layout practice is to use a star-ground configuration and to keep the high-current paths short and wide.
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The UC3825Q requires a compensation network to ensure stability. The recommended compensation network consists of a resistor (Rcomp) and a capacitor (Ccomp) connected between the COMP pin and the VREF pin. The values of Rcomp and Ccomp depend on the specific application and can be calculated using TI's compensation calculator or by following the guidelines in the datasheet.
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The maximum output current of the UC3825Q is not explicitly stated in the datasheet. However, the device is designed to drive a maximum of 1A of output current. Exceeding this limit can cause the device to overheat and may lead to reduced reliability or even failure.
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Yes, the UC3825Q can be used in a synchronous rectification topology. However, it requires additional external circuitry to control the synchronous rectifier MOSFET. TI provides application notes and reference designs that demonstrate how to implement synchronous rectification with the UC3825Q.
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The UC3825Q has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features. However, additional external circuitry may be required to provide additional protection against overvoltage and undervoltage conditions. TI recommends using a voltage supervisor or a reset IC to monitor the input voltage and reset the UC3825Q if it falls outside the recommended operating range.
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UC3825Q 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.