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- Part Number UC3847DW
- Manufacturer Texas Instruments
- Pin Count 16
- Part Category Integrated Circuit
- Package Category Small Outline Packages
- Footprint Name Small Outline Packages - DW (R-PDSO-G16)
- Released Date May 11, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
UC3847DW Details
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Manufacturer Part Number:
UC3847DW
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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:
16
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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
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Analog IC - Other Type:
SWITCHING CONTROLLER
UC3847DW Frequently Asked Questions (FAQs)
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The maximum voltage rating for the UC3847DW is 30V. However, it's recommended to operate it within 15V to ensure reliable operation and to prevent damage to the internal circuitry.
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The resistor values for the oscillator circuit (Rt and Ct) depend on the desired switching frequency. A good starting point is to use the values recommended in the datasheet (Rt = 10kΩ, Ct = 3.3nF) and then adjust them based on the specific application requirements.
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The soft-start pin (SS) is used to gradually increase the output voltage during startup, reducing inrush current and preventing voltage overshoots. To use it, connect a capacitor (typically 10nF to 100nF) between the SS pin and ground, and a resistor (typically 1kΩ to 10kΩ) between the SS pin and the output voltage.
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To ensure stable operation, make sure to decouple the power supply pins (VCC and GND) with adequate capacitors (typically 10uF to 100uF), and use a low-ESR capacitor for the output filter. Also, ensure that the layout is well-designed, with short traces and minimal noise coupling.
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The UC3847DW is a controller IC and does not have an output current capability. It's designed to drive an external power switch (e.g., MOSFET or BJT) to control the output current. The maximum output current depends on the external power switch and the application requirements.
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UC3847DW 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.