Texas Instruments
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UC2825QTR
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UC2825QTR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: PWM Controller
  • Package: QFN (Quad Flat No-Lead)
  • Essence: Regulates and controls the pulse width modulation (PWM) signals in power management applications.
  • Packaging/Quantity: Comes in a reel packaging with 2500 units per reel.

Specifications

  • Input Voltage: 4.5V to 16V
  • Output Voltage: Adjustable
  • Operating Temperature Range: -40°C to +85°C
  • Switching Frequency: Up to 1MHz
  • Number of Pins: 16
  • Pin Pitch: 0.65mm

Detailed Pin Configuration

  1. COMP: Compensation pin for feedback control loop.
  2. CS: Current sense input pin.
  3. RT/CT: Timing components connection pin.
  4. GND: Ground reference pin.
  5. VREF: Reference voltage output pin.
  6. SS/TR: Soft-start and shutdown control pin.
  7. VCC: Supply voltage input pin.
  8. UVLO: Under-voltage lockout pin.
  9. SYNC: Synchronization input pin.
  10. FB: Feedback voltage input pin.
  11. OUTA: Output A pin.
  12. OUTB: Output B pin.
  13. NC: No connection pin.
  14. NC: No connection pin.
  15. NC: No connection pin.
  16. NC: No connection pin.

Functional Features

  • Regulates and controls the PWM signals for power management applications.
  • Provides adjustable output voltage.
  • Offers under-voltage lockout protection.
  • Allows synchronization with an external clock signal.
  • Includes soft-start and shutdown control functionality.
  • Provides compensation for feedback control loop stability.

Advantages

  • High switching frequency capability.
  • Wide input voltage range.
  • Adjustable output voltage.
  • Compact and space-saving QFN package.
  • Synchronization feature for multi-device operation.

Disadvantages

  • Limited number of pins for additional functionalities.
  • Requires external timing components for proper operation.
  • Not suitable for high-power applications.

Working Principles

The UC2825QTR is a PWM controller IC designed for power management applications. It regulates and controls the pulse width modulation (PWM) signals to achieve desired output voltages. The feedback control loop, with the help of the compensation pin (COMP), ensures stable and accurate regulation. The IC operates within a wide input voltage range and offers adjustable output voltage. It includes under-voltage lockout protection, synchronization capability, and soft-start and shutdown control features.

Detailed Application Field Plans

The UC2825QTR finds applications in various power management systems such as:

  1. Switching Power Supplies
  2. DC-DC Converters
  3. LED Drivers
  4. Battery Chargers
  5. Motor Control Systems

Detailed and Complete Alternative Models

  1. UC3825: Similar functionality with different pin configuration.
  2. UC2845: Lower switching frequency but higher current capability.
  3. UC3845: Higher switching frequency and current capability.

(Note: This list is not exhaustive and there may be other alternative models available.)

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací UC2825QTR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of UC2825QTR in technical solutions:

  1. Q: What is UC2825QTR? A: UC2825QTR is a pulse width modulation (PWM) controller IC commonly used in power supply applications.

  2. Q: What is the operating voltage range of UC2825QTR? A: The operating voltage range of UC2825QTR is typically between 8V and 35V.

  3. Q: What is the maximum switching frequency supported by UC2825QTR? A: UC2825QTR can support a maximum switching frequency of up to 1MHz.

  4. Q: Can UC2825QTR be used in both buck and boost converter topologies? A: Yes, UC2825QTR can be used in both buck and boost converter topologies, as well as other power supply configurations.

  5. Q: Does UC2825QTR have built-in protection features? A: Yes, UC2825QTR has various built-in protection features such as overcurrent protection, overvoltage protection, and thermal shutdown.

  6. Q: What is the typical output current capability of UC2825QTR? A: The typical output current capability of UC2825QTR depends on the external components used, but it can handle currents up to several amps.

  7. Q: Can UC2825QTR operate in a synchronized mode? A: Yes, UC2825QTR can operate in a synchronized mode with an external clock signal for applications requiring multiple converters.

  8. Q: Is UC2825QTR suitable for high-efficiency designs? A: Yes, UC2825QTR is designed for high-efficiency power supply designs, offering low power dissipation and high switching frequency capability.

  9. Q: What is the purpose of the error amplifier in UC2825QTR? A: The error amplifier in UC2825QTR compares the feedback voltage with a reference voltage to regulate the output voltage.

  10. Q: Can UC2825QTR be used in automotive applications? A: Yes, UC2825QTR can be used in automotive applications as it meets the necessary requirements for automotive-grade components.

Please note that these answers are general and may vary depending on specific application requirements and design considerations.